{"id":24199,"date":"2026-10-31T15:50:18","date_gmt":"2026-10-31T07:50:18","guid":{"rendered":"https:\/\/cciedump.spoto.net\/blog\/?p=24199"},"modified":"2026-10-31T15:50:20","modified_gmt":"2026-10-31T07:50:20","slug":"what-command-displays-the-routing-table-on-a-cisco-router","status":"publish","type":"post","link":"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html","title":{"rendered":"What Command Displays the Routing Table on a Cisco Router?"},"content":{"rendered":"<p>On a Cisco router running Cisco IOS or Cisco IOS XE, the primary command used to display the active routing table is <strong><code>show ip route<\/code><\/strong>. This command queries the router&#8217;s Routing Information Base (RIB) and prints every directly connected network, static route, and dynamically learned path currently active in the control plane.<\/p>\n<p>Whether validating connectivity across subnets, auditing route advertisements from dynamic protocols like OSPF and BGP, or diagnosing reachability issues, <code>show ip route<\/code> serves as the primary diagnostic tool in Cisco networking.<\/p>\n<hr>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Running_the_show_ip_route_Command_on_Cisco_IOS\" title=\"Running the show ip route Command on Cisco IOS\">Running the show ip route Command on Cisco IOS<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_1_Enter_Privileged_EXEC_Mode\" title=\"Step 1: Enter Privileged EXEC Mode\">Step 1: Enter Privileged EXEC Mode<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_2_Ensure_Routing_Is_Active\" title=\"Step 2: Ensure Routing Is Active\">Step 2: Ensure Routing Is Active<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_3_Execute_the_Base_Command\" title=\"Step 3: Execute the Base Command\">Step 3: Execute the Base Command<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_4_Review_the_Initial_Output\" title=\"Step 4: Review the Initial Output\">Step 4: Review the Initial Output<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Deciphering_the_Routing_Table_Codes_Administrative_Distance_and_Metrics\" title=\"Deciphering the Routing Table: Codes, Administrative Distance, and Metrics\">Deciphering the Routing Table: Codes, Administrative Distance, and Metrics<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#1_Protocol_Source_Code_O\" title=\"1. Protocol Source Code (O)\">1. Protocol Source Code (O)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#2_Destination_Prefix_and_Subnet_Mask_1721620024\" title=\"2. Destination Prefix and Subnet Mask (172.16.20.0\/24)\">2. Destination Prefix and Subnet Mask (172.16.20.0\/24)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#3_Administrative_Distance_110\" title=\"3. Administrative Distance (110)\">3. Administrative Distance (110)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#4_Metric_20\" title=\"4. Metric (20)\">4. Metric (20)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#5_Next-Hop_Address_via_10112\" title=\"5. Next-Hop Address (via 10.1.1.2)\">5. Next-Hop Address (via 10.1.1.2)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#6_Route_Uptime_02_45_11\" title=\"6. Route Uptime (02:45:11)\">6. Route Uptime (02:45:11)<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#7_Outbound_Egress_Interface_GigabitEthernet01\" title=\"7. Outbound Egress Interface (GigabitEthernet0\/1)\">7. Outbound Egress Interface (GigabitEthernet0\/1)<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Filtering_the_Routing_Table_by_Protocol_Prefix_and_CLI_Modifiers\" title=\"Filtering the Routing Table by Protocol, Prefix, and CLI Modifiers\">Filtering the Routing Table by Protocol, Prefix, and CLI Modifiers<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Frequently_Asked_Questions_Inspecting_IPv6_Routing_Tables\" title=\"Frequently Asked Questions: Inspecting IPv6 Routing Tables\">Frequently Asked Questions: Inspecting IPv6 Routing Tables<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#What_command_displays_the_IPv6_routing_table_on_a_Cisco_router\" title=\"What command displays the IPv6 routing table on a Cisco router?\">What command displays the IPv6 routing table on a Cisco router?<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#What_does_the_show_ipv6_route_output_look_like\" title=\"What does the show ipv6 route output look like?\">What does the show ipv6 route output look like?<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Can_you_filter_IPv6_routing_entries_like_IPv4\" title=\"Can you filter IPv6 routing entries like IPv4?\">Can you filter IPv6 routing entries like IPv4?<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Troubleshooting_Guide_Why_a_Configured_Route_Is_Missing_from_the_Table\" title=\"Troubleshooting Guide: Why a Configured Route Is Missing from the Table\">Troubleshooting Guide: Why a Configured Route Is Missing from the Table<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_1_Check_Physical_and_Line_Protocol_Status\" title=\"Step 1: Check Physical and Line Protocol Status\">Step 1: Check Physical and Line Protocol Status<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_2_Validate_Next-Hop_IP_Reachability\" title=\"Step 2: Validate Next-Hop IP Reachability\">Step 2: Validate Next-Hop IP Reachability<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_3_Verify_Dynamic_Protocol_Adjacencies\" title=\"Step 3: Verify Dynamic Protocol Adjacencies\">Step 3: Verify Dynamic Protocol Adjacencies<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_4_Check_for_Route_Filtering_and_Distribution_Lists\" title=\"Step 4: Check for Route Filtering and Distribution Lists\">Step 4: Check for Route Filtering and Distribution Lists<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Step_5_Check_Administrative_Distance_Conflicts\" title=\"Step 5: Check Administrative Distance Conflicts\">Step 5: Check Administrative Distance Conflicts<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Cisco_IOS_Command_Specifications_and_Reference_Details\" title=\"Cisco IOS Command Specifications and Reference Details\">Cisco IOS Command Specifications and Reference Details<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Command_Syntax\" title=\"Command Syntax\">Command Syntax<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Parameter_Descriptions\" title=\"Parameter Descriptions\">Parameter Descriptions<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Command_Modes\" title=\"Command Modes\">Command Modes<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Release_History\" title=\"Release History\">Release History<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\/#Usage_Guidelines\" title=\"Usage Guidelines\">Usage Guidelines<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Running_the_show_ip_route_Command_on_Cisco_IOS\"><\/span>Running the <code>show ip route<\/code> Command on Cisco IOS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To display the IPv4 routing table, execute the command from the privileged EXEC prompt. Follow these sequential steps to retrieve and inspect the table properly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_1_Enter_Privileged_EXEC_Mode\"><\/span>Step 1: Enter Privileged EXEC Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Log in to your router via console, SSH, or Telnet. If you are in user EXEC mode (indicated by a <code>&gt;<\/code> prompt), elevate your privileges using the <code>enable<\/code> command:<\/p>\n<pre><code class=\"language-text\">Router&gt; enable\nRouter#\n<\/code><\/pre>\n<p>The <code>#<\/code> symbol indicates that you are in privileged EXEC mode, which provides the administrative access required to view and troubleshoot routing information.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_2_Ensure_Routing_Is_Active\"><\/span>Step 2: Ensure Routing Is Active<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>On dedicated Cisco routers, IPv4 routing is active by default. However, if you are working on a Layer 3 Cisco Catalyst switch acting as a router, routing must be explicitly enabled globally before any table can form:<\/p>\n<pre><code class=\"language-text\">Router# configure terminal\nRouter(config)# ip routing\nRouter(config)# exit\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Step_3_Execute_the_Base_Command\"><\/span>Step 3: Execute the Base Command<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Run the primary command to view the complete IPv4 routing table:<\/p>\n<pre><code class=\"language-text\">Router# show ip route\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Step_4_Review_the_Initial_Output\"><\/span>Step 4: Review the Initial Output<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When executed without arguments, the command displays two main sections:<br \/>\n1. <strong>The Route Code Legend<\/strong>: A catalog of letters mapping source protocols (e.g., <code>C<\/code> for connected, <code>S<\/code> for static, <code>O<\/code> for OSPF).<br \/>\n2. <strong>The Gateway of Last Resort<\/strong>: Indicates the default route and next-hop address.<br \/>\n3. <strong>The Route Entries<\/strong>: The list of subnets and networks known to the device.<\/p>\n<pre><code class=\"language-text\">Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area \n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\n       E1 - OSPF external type 1, E2 - OSPF external type 2\n       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2\n       ia - IS-IS inter area, * - candidate default, U - per-user static route\n       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP\n       a - application route\n       + - replicated route, % - next hop override, p - overrides from PfR\n\nGateway of last resort is 192.168.1.1 to network 0.0.0.0\n\n      10.0.0.0\/8 is variably subnetted, 2 subnets, 2 masks\nC        10.1.10.0\/24 is directly connected, GigabitEthernet0\/0\nL        10.1.10.1\/32 is directly connected, GigabitEthernet0\/0\nO     172.16.0.0\/16 [110\/2] via 192.168.1.2, 00:14:22, GigabitEthernet0\/1\nS*    0.0.0.0\/0 [1\/0] via 192.168.1.1\n<\/code><\/pre>\n<hr>\n<h2><span class=\"ez-toc-section\" id=\"Deciphering_the_Routing_Table_Codes_Administrative_Distance_and_Metrics\"><\/span>Deciphering the Routing Table: Codes, Administrative Distance, and Metrics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Understanding how to read each segment of a routing table entry enables you to determine how traffic flows through your network. Each line inside the routing table adheres to a standardized syntax.<\/p>\n<p>Consider this standard OSPF route entry:<\/p>\n<pre><code class=\"language-text\">O    172.16.20.0\/24 [110\/20] via 10.1.1.2, 02:45:11, GigabitEthernet0\/1\n<\/code><\/pre>\n<p>Follow this breakdown to interpret each component from left to right:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Protocol_Source_Code_O\"><\/span>1. Protocol Source Code (<code>O<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The initial character identifies how the router learned the route. Common protocol designators include:<br \/>\n&#8211; <strong><code>L<\/code> (Local)<\/strong>: A <code>\/32<\/code> host route representing the router\u2019s own interface IP address, allowing the router to efficiently process packets destined for itself.<br \/>\n&#8211; <strong><code>C<\/code> (Connected)<\/strong>: A subnet directly attached to an active, operational interface.<br \/>\n&#8211; <strong><code>S<\/code> (Static)<\/strong>: A route manually configured by an administrator using the <code>ip route<\/code> command.<br \/>\n&#8211; <strong><code>D<\/code> (EIGRP)<\/strong>: A route learned through the Enhanced Interior Gateway Routing Protocol.<br \/>\n&#8211; <strong><code>O<\/code> (OSPF)<\/strong>: A route learned via the Open Shortest Path First protocol.<br \/>\n&#8211; <strong><code>B<\/code> (BGP)<\/strong>: A route learned through Border Gateway Protocol.<br \/>\n&#8211; <strong><code>*<\/code> (Candidate Default)<\/strong>: Flags a path eligible to serve as the default route (e.g., <code>S*<\/code>).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Destination_Prefix_and_Subnet_Mask_1721620024\"><\/span>2. Destination Prefix and Subnet Mask (<code>172.16.20.0\/24<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The target network and its prefix length using CIDR notation. When forwarding a packet, Cisco IOS compares the destination IP against this field using the longest prefix match rule.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Administrative_Distance_110\"><\/span>3. Administrative Distance (<code>110<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The first value inside the brackets <code>[110\/20]<\/code> is the Administrative Distance (AD). AD defines the trustworthiness of the route source. Lower numbers indicate higher trust. Standard default values include:<br \/>\n&#8211; Connected: <code>0<\/code><br \/>\n&#8211; Static: <code>1<\/code><br \/>\n&#8211; EIGRP internal: <code>90<\/code><br \/>\n&#8211; OSPF: <code>110<\/code><br \/>\n&#8211; IS-IS: <code>115<\/code><br \/>\n&#8211; RIP: <code>120<\/code><br \/>\n&#8211; External BGP (eBGP): <code>20<\/code><br \/>\n&#8211; Internal BGP (iBGP): <code>200<\/code><\/p>\n<h3><span class=\"ez-toc-section\" id=\"4_Metric_20\"><\/span>4. Metric (<code>20<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The second value inside the brackets <code>[110\/20]<\/code> represents the routing metric calculated by the source protocol. OSPF calculates this as cumulative cost based on bandwidth, EIGRP uses composite metrics (bandwidth and delay), and RIP tracks hop count.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Next-Hop_Address_via_10112\"><\/span>5. Next-Hop Address (<code>via 10.1.1.2<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The IP address of the neighboring router interface to which packets matching this subnet must be forwarded. For directly connected networks (<code>C<\/code>), this field shows <code>is directly connected<\/code>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6_Route_Uptime_02_45_11\"><\/span>6. Route Uptime (<code>02:45:11<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The length of time in hours, minutes, and seconds that this specific route has been present in the RIB without changes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"7_Outbound_Egress_Interface_GigabitEthernet01\"><\/span>7. Outbound Egress Interface (<code>GigabitEthernet0\/1<\/code>)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The physical or logical interface through which matching packets exit the router.<\/p>\n<hr>\n<h2><span class=\"ez-toc-section\" id=\"Filtering_the_Routing_Table_by_Protocol_Prefix_and_CLI_Modifiers\"><\/span>Filtering the Routing Table by Protocol, Prefix, and CLI Modifiers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In enterprise networks containing thousands of prefixes, running <code>show ip route<\/code> without filters can overwhelm terminal sessions. You can target specific protocols, query individual IP addresses, or apply CLI pipe filters.<\/p>\n<pre><code class=\"language-text\">! ==============================================================================\n! TEMPLATE 1: FILTER BY ROUTING PROTOCOL\n! ==============================================================================\nRouter# show ip route [protocol]\n\n! Examples:\nRouter# show ip route ospf\nRouter# show ip route static\nRouter# show ip route bgp\nRouter# show ip route eigrp\nRouter# show ip route connected\n\n! ==============================================================================\n! TEMPLATE 2: QUERY A SPECIFIC IP ADDRESS OR SUBNET\n! ==============================================================================\nRouter# show ip route &lt;destination-ip&gt; [subnet-mask]\n\n! Exact address evaluation (finds the best matching route for a target destination):\nRouter# show ip route 192.168.10.45\n\n! Specific subnet prefix evaluation:\nRouter# show ip route 10.10.0.0 255.255.0.0\n\n! Include subnets that fall inside a larger network:\nRouter# show ip route &lt;network-prefix&gt; &lt;subnet-mask&gt; longer-prefixes\nRouter# show ip route 10.0.0.0 255.0.0.0 longer-prefixes\n\n! ==============================================================================\n! TEMPLATE 3: DISPLAY ROUTING TABLE SUMMARIES\n! ==============================================================================\nRouter# show ip route summary\nRouter# show ip route supernets-only\n\n! ==============================================================================\n! TEMPLATE 4: CLI PIPE FILTERS (REGULAR EXPRESSIONS &amp; OUTPUT CONDITIONING)\n! ==============================================================================\n! Filter lines containing a specific keyword:\nRouter# show ip route | include &lt;keyword&gt;\nRouter# show ip route | include GigabitEthernet0\/0\nRouter# show ip route | include 192.168.\n\n! Start display at a specific section or network:\nRouter# show ip route | begin Gateway\nRouter# show ip route | begin 172.16.0.0\n\n! Filter out specific unwanted patterns:\nRouter# show ip route | exclude L        \n<\/code><\/pre>\n<hr>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_Inspecting_IPv6_Routing_Tables\"><\/span>Frequently Asked Questions: Inspecting IPv6 Routing Tables<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_command_displays_the_IPv6_routing_table_on_a_Cisco_router\"><\/span>What command displays the IPv6 routing table on a Cisco router?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The command to display IPv6 routes on a Cisco router is <strong><code>show ipv6 route<\/code><\/strong>.<\/p>\n<p>Cisco IOS maintains distinct Routing Information Bases (RIB) for IPv4 and IPv6. As a result, running <code>show ip route<\/code> only exposes IPv4 entries; it will never display IPv6 unicast paths.<\/p>\n<pre><code class=\"language-text\">Router# show ipv6 route\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"What_does_the_show_ipv6_route_output_look_like\"><\/span>What does the <code>show ipv6 route<\/code> output look like?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The layout mirrors the IPv4 routing table, listing routing codes, global destination prefixes, administrative distance, metric, and link-local or global next-hop addresses:<\/p>\n<pre><code class=\"language-text\">Router# show ipv6 route\nIPv6 Routing Table - default - 5 entries\nCodes: C - Connected, L - Local, S - Static, U - User\n       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2\n       O - OSPF, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2\n       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2\n\nC   2001:DB8:1::\/64 [0\/0]\n     via GigabitEthernet0\/0, directly connected\nL   2001:DB8:1::1\/128 [0\/0]\n     via GigabitEthernet0\/0, receive\nO   2001:DB8:2::\/64 [110\/2]\n     via FE80::21A:A2FF:FE34:5678, GigabitEthernet0\/0\nS   ::\/0 [1\/0]\n     via 2001:DB8:1::254\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Can_you_filter_IPv6_routing_entries_like_IPv4\"><\/span>Can you filter IPv6 routing entries like IPv4?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes. You can isolate specific IPv6 protocols and address blocks using analogous syntax:<\/p>\n<pre><code class=\"language-text\">Router# show ipv6 route ospf\nRouter# show ipv6 route static\nRouter# show ipv6 route 2001:db8:2::\/64\nRouter# show ipv6 route summary\n<\/code><\/pre>\n<hr>\n<h2><span class=\"ez-toc-section\" id=\"Troubleshooting_Guide_Why_a_Configured_Route_Is_Missing_from_the_Table\"><\/span>Troubleshooting Guide: Why a Configured Route Is Missing from the Table<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When a configured static route or dynamic protocol prefix fails to populate in the routing table output, systematic troubleshooting across the following validation steps will isolate the issue.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_1_Check_Physical_and_Line_Protocol_Status\"><\/span>Step 1: Check Physical and Line Protocol Status<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A route will not enter the RIB if its associated egress interface is down.<br \/>\n&#8211; Run <code>show ip interface brief<\/code> to check the <code>Status<\/code> and <code>Protocol<\/code> columns.<br \/>\n&#8211; Both columns must display <strong><code>up\/up<\/code><\/strong>. If an interface is <code>down\/down<\/code> or <code>administratively down<\/code>, any connected route or static route bound to that interface will be suppressed from the table.<\/p>\n<pre><code class=\"language-text\">Router# show ip interface brief\nInterface              IP-Address      OK? Method Status                Protocol\nGigabitEthernet0\/0     10.1.1.1        YES manual up                    up      \nGigabitEthernet0\/1     unassigned      YES unset  administratively down down    \n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Step_2_Validate_Next-Hop_IP_Reachability\"><\/span>Step 2: Validate Next-Hop IP Reachability<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For static routes configured with a next-hop IP (e.g., <code>ip route 10.20.0.0 255.255.255.0 192.168.1.5<\/code>), Cisco IOS verifies that the next-hop address itself can be resolved via an existing route in the RIB.<br \/>\n&#8211; If the router cannot find a valid path to reach <code>192.168.1.5<\/code>, it drops the static route as unresolvable.<br \/>\n&#8211; Test reachability by pinging the next-hop IP: <code>ping 192.168.1.5<\/code>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_3_Verify_Dynamic_Protocol_Adjacencies\"><\/span>Step 3: Verify Dynamic Protocol Adjacencies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If an OSPF, EIGRP, or BGP route is missing:<br \/>\n&#8211; Verify neighbor status:<br \/>\n<code>text<br \/>\nRouter# show ip ospf neighbor<br \/>\nRouter# show ip eigrp neighbors<br \/>\nRouter# show ip bgp summary<\/code><br \/>\n&#8211; If the neighbor state is not established (such as <code>FULL<\/code> for OSPF or established state for BGP), the router cannot exchange prefixes, and routes will not be injected into the RIB.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_4_Check_for_Route_Filtering_and_Distribution_Lists\"><\/span>Step 4: Check for Route Filtering and Distribution Lists<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Inbound routing updates may be filtered before they can enter the routing table.<br \/>\n&#8211; Inspect the active configuration for inbound <code>distribute-list<\/code>, <code>route-map<\/code>, or <code>prefix-list<\/code> statements attached to your routing processes:<br \/>\n<code>text<br \/>\nRouter# show run | section router<\/code><br \/>\n&#8211; If an access list or prefix list denies the prefix, it will be omitted from the table even if the neighboring router advertises it.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_5_Check_Administrative_Distance_Conflicts\"><\/span>Step 5: Check Administrative Distance Conflicts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If two routing sources offer the exact same destination prefix, Cisco IOS installs only the route with the lower Administrative Distance, as detailed in the route interpretation section above.<br \/>\n&#8211; If an OSPF process (AD 110) advertises <code>10.5.0.0\/24<\/code>, but a static route (AD 1) exists for the same subnet, the OSPF route will be kept out of the RIB.<br \/>\n&#8211; Use <code>show ip route &lt;prefix&gt;<\/code> to evaluate all available candidate sources.<\/p>\n<hr>\n<h2><span class=\"ez-toc-section\" id=\"Cisco_IOS_Command_Specifications_and_Reference_Details\"><\/span>Cisco IOS Command Specifications and Reference Details<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The following reference details outline the formal command syntax, operational modes, and implementation guidelines according to Cisco technical documentation.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Command_Syntax\"><\/span>Command Syntax<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-text\">show ip route [vrf vrf-name] [protocol [as-number]] [ip-address [mask] [longer-prefixes]] [summary] [supernets-only] [traffic-engineering]\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"Parameter_Descriptions\"><\/span>Parameter Descriptions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Parameter<\/th>\n<th style=\"text-align: left;\">Type<\/th>\n<th style=\"text-align: left;\">Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><code>vrf vrf-name<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Displays the routing table associated with a specified Virtual Routing and Forwarding (VRF) instance.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>protocol<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Limits output to routes derived from a specific routing protocol (<code>bgp<\/code>, <code>eigrp<\/code>, <code>ospf<\/code>, <code>rip<\/code>, <code>isis<\/code>, <code>static<\/code>, <code>connected<\/code>, <code>local<\/code>).<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>as-number<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Autonomous system number; filters EIGRP or BGP route output to a specific AS.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>ip-address [mask]<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Queries the table for a specific host address or subnet; evaluates longest prefix match.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>longer-prefixes<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Displays subnets that fall inside the specified network prefix.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>summary<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Displays aggregate route counts, memory consumption, and totals per routing source.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><code>supernets-only<\/code><\/td>\n<td style=\"text-align: left;\">Optional<\/td>\n<td style=\"text-align: left;\">Restricts output strictly to supernet\/classless summarization entries.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Command_Modes\"><\/span>Command Modes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>User EXEC Mode<\/strong> (<code>Router&gt;<\/code>)<\/li>\n<li><strong>Privileged EXEC Mode<\/strong> (<code>Router#<\/code>)<\/li>\n<\/ul>\n<p><em>Note: While available in user EXEC mode on older IOS versions, privileged EXEC mode is recommended to access full parameters, VRF scopes, and detailed metric counters.<\/em><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Release_History\"><\/span>Release History<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: left;\">Cisco IOS \/ IOS XE Release<\/th>\n<th style=\"text-align: left;\">Modification Details<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: left;\"><strong>Cisco IOS 10.0<\/strong><\/td>\n<td style=\"text-align: left;\">Command introduced in base releases for standard IPv4 RIB queries.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Cisco IOS 12.0(5)T<\/strong><\/td>\n<td style=\"text-align: left;\">Added support for the <code>vrf vrf-name<\/code> parameter to support Multi-VRF and MPLS VPN architectures.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Cisco IOS 12.2(8)T<\/strong><\/td>\n<td style=\"text-align: left;\">Introduced the <code>longer-prefixes<\/code> keyword for flexible subnet analysis.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><strong>Cisco IOS XE 16.1.1<\/strong><\/td>\n<td style=\"text-align: left;\">Standardized unified CLI behavior across enterprise routing platforms (ASR 1000, ISR 4000, Catalyst 9000 Series).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Usage_Guidelines\"><\/span>Usage Guidelines<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The <code>show ip route<\/code> command reports the control plane&#8217;s best paths collected in the RIB. It does not reflect hardware forwarding tables directly. Cisco devices deploy <strong>Cisco Express Forwarding (CEF)<\/strong>, which compiles the active routes from <code>show ip route<\/code> into the Forwarding Information Base (FIB) and adjacency tables. To inspect hardware-level switching paths programmed onto the data plane, use <code>show ip cef<\/code>.<\/p>\n<hr>\n<p>The <strong><code>show ip route<\/code><\/strong> command remains the definitive starting point for inspecting and verifying network paths on Cisco equipment. By combining the base command with protocol filters, address queries, and output modifiers, you can isolate routing anomalies, verify failover paths, and ensure your router correctly directs traffic across the enterprise. For modern dual-stack environments, pairing this command with <strong><code>show ipv6 route<\/code><\/strong> gives you complete visibility across all operational layers of your network.<\/p>\n<div class='sfsi_Sicons' style='width: 100%; display: inline-block; vertical-align: middle; text-align:left'><div style='margin:0px 8px 0px 0px; line-height: 24px'><span>Please follow and like us:<\/span><\/div><div class='sfsi_socialwpr'><div class='sf_fb_share sf_icon' style='text-align:left;vertical-align: middle;'><a href='https:\/\/www.facebook.com\/sharer\/sharer.php?u=https%3A%2F%2Fcciedump.spoto.net%2Fblog%2Fwhat-command-displays-the-routing-table-on-a-cisco-router_24199.html' style='display:inline-block;'  > <img class='sfsi_wicon'  data-pin-nopin='true' width='auto' height='auto' alt='fb-share-icon' title='Facebook Share' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/visit_icons\/fbshare_bck.png'  \/><\/a><\/div><div class='sf_twiter sf_icon' style='display: inline-block;vertical-align: middle;width: auto;margin-left: 7px;'>\r\n\t\t\t\t\t\t<a target='_blank' href='https:\/\/twitter.com\/intent\/tweet?text=What+Command+Displays+the+Routing+Table+on+a+Cisco+Router%3F+https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html'style='display:inline-block' >\r\n\t\t\t\t\t\t\t<img data-pin-nopin= true width='auto' class='sfsi_wicon' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/visit_icons\/en_US_Tweet.svg' alt='Tweet' title='Tweet' >\r\n\t\t\t\t\t\t<\/a>\r\n\t\t\t\t\t<\/div><div class='sf_pinit sf_icon' style='text-align:left;vertical-align: middle;float:left;line-height: 33px;width:auto;margin: 0 -2px;'><a href='#'  onclick='sfsi_pinterest_modal_images(event,\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\",\"What Command Displays the Routing Table on a Cisco Router?\")' style='display:inline-block;'  > <img class='sfsi_wicon'  data-pin-nopin='true' width='auto' height='auto' alt='fb-share-icon' title='Pin Share' src='https:\/\/cciedump.spoto.net\/blog\/wp-content\/plugins\/ultimate-social-media-icons\/images\/share_icons\/Pinterest_Save\/en_US_save.svg'  \/><\/a><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>On a Cisco router running Cisco IOS or Cisco IOS XE, the primary command used to display the active routing table is show ip route. This command queries the router&#8217;s Routing Information Base (RIB) and prints every directly connected network, static route, and dynamically learned path currently active in the control plane. Whether validating connectivity&#8230; &raquo; <a class=\"read-more-link\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\">read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,608],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Command Displays the Routing Table on a Cisco Router? - SPOTO Official Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cciedump.spoto.net\/blog\/what-command-displays-the-routing-table-on-a-cisco-router_24199.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Command Displays the Routing Table on a Cisco Router? - SPOTO Official Blog\" \/>\n<meta property=\"og:description\" content=\"On a Cisco router running Cisco IOS or Cisco IOS XE, the primary command used to display the active routing table is show ip route. 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