General Snippets

Get time/timezone bash show clock

Show all VRF Interfaces ```bash show vrf

show ip vrf 
``` Ping IP through VRF interface 
```bash
ping vrf <vrf-name> <ip> 
```

Filter logging bash sh logging | include May 16

Traceroute bash traceroute 8.8.8.8 source GigabitEthernet0/0 traceroute 8.8.8.8 source 192.0.2.1

EIGRP Neighbors bash sh ip eigrp nei

BGP Neighbors bash sh ip bgp nei

IPSec Tunnel info bash sh crypto session detail sh crypto session brief

IKE Phase 1 bash show crypto isakmp sa detail (IKEv1) show crypto ikev2 sa detail (IKEv2) Check IPSec phase 2 status bash show crypto ipsec sa

General notes

used to facilitate MPLS
VRF-lite is VRF without MPLS
used by service providers to allow one device to carry traffic from multiple customers
Allows you to split physical router into multiple virtual routers , “vlans for routers”
Separate routing tables for each instance
TCP / IP layer 3 interfaces can be configured to use VRF
interfaces and routes are configured to a specified VRF
cannot be applied to layer 2 interfaces
traffic in one VRF cannot be forwarded out of an interface in another VRF without VRF leaking
Router intefaces , SVI’s and routed ports on multilayered switches can be configured in a VRF