CEF Show And Troubleshooting Commands

Here are a couple of commands for viewing and troubleshooting CEF. Cisco Express Forwarding Commands By default, Cisco Express Forwarding and Fast Switching are enabled. (config-if)#no ip route-cache This command disables both Fast Switching and CEF. (config-if)#ip route-cache This command enables Fast Switching only. Cisco Express Forwarding is still disabled if we don’t activate it. … Read more CEF Show And Troubleshooting Commands

HSRP Interface Tracking on IOS Routers

In this lab, I learned the following: configuring a HSRP group on physical interfaces, testing how a PC can reach a remote subnet through a redundant gateway, by configuring its default gateway as the HSRP virtual address, testing how the second router becomes Active, testing interface tracking. For interface tracking, at first, I thought there … Read more HSRP Interface Tracking on IOS Routers

Default Routing Policy in Junos

import = receive into routing table export = send to neighbors, or, redistribute (or not).OSPF —— Default import policy: accept all OSPF routes from neighbors Default export policy: advertise all direct routes (including loopback interfaces).Here’s an example to illustrate it. Dubai learned the 15.15.15.15/32 route through OSPF from Tokyo. In fact, the default export policy … Read more Default Routing Policy in Junos