Cisco N7K-C7010 Configuration Guide - Page 272

Configuring IP Tunnels Chapter 8 Configuring IP Tunnels Send document comments to [email protected] DETAILED STEPS Step 1 Command configure terminal Step 2 Example: switch# configure terminal switch(config)# interface tunnel number Step 3 Example: switch(config)# interface tunnel 1 switch(config-if)# tunnel mode gre ip Step 4 Example: switch(config-if)# tunnel mode gre ip show interfaces tunnel number Step 5 Example: switch(config-if)# show interfaces tunnel 1 copy running-config startup-config Example: switch(config-if)# copy running-config startup-config Purpose Enters configuration mode. Enters a tunnel interface configuration mode. Sets this tunnel mode to GRE (Optional) Displays the tunnel interface statistics. (Optional) Saves this configuration change. This example shows how to configure the tunnel interface to GRE and set the GRE tunnel keepalives: switch# configure terminal switch(config)# interface tunnel 1 switch(config-if)# tunnel mode gre ip switch(config-if)# copy running-config startup-config Enabling Path MTU Discovery Use the tunnel path-mtu discovery command to enable path MTU discovery on a tunnel. Command tunnel path-mtu-discovery [age-timer min] [min-mtu bytes] Example: switch(config-if)# tunnel path-mtu-discovery 25 1500 Purpose Enables Path MTU Discovery (PMTUD) on a tunnel interface. The parameters are as follows: • mins-Number of minutes. The range is from 10 to 30. The default is 10. • mtu-bytes-Minimum MTU recognized. The range is from 92 to 65535. The default is 92. Assigning VRF Membership to a Tunnel Interface You can add a tunnel interface to a VRF. Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 8-8 OL-23435-03