Cisco Catalyst 4500 Series - Configuring the User Interface for ARP

43-15
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 43 Configuring VRF-lite
Configuring VRF-lite for IPv6
VRF-aware services are implemented in platform-independent modules. VRF provides multiple routing
instances in Cisco IOS. Each platform has its own limit on the number of VRFs it supports.
VRF-aware services have the following characteristics:
• The user can ping a host in a user-specified VRF.
• ARP entries are learned in separate VRFs. The user can display Address Resolution Protocol (ARP)
entries for specific VRFs.
These services are VRF-aware:
• Ping
• Unicast Reverse Path Forwarding (uRPF)
• Traceroute
• FTP and TFTP
• Telnet and SSH
• NTP
Configuring the User Interface for ARP
To configure VRF-aware services for ARP, perform this task:
Configuring the User Interface for PING
To perform a VRF-aware ping, perform this task:
Configuring the User Interface for uRPF
You can configure uRPF on an interface assigned to a VRF. Source lookup is performed in the VRF table.
To configure VRF-aware services for uRPF, perform this task:
Command Purpose
Switch# show ip arp vrf vrf-name
Displays the ARP table (static and dynamic entries) in the specified
VRF.
Switch(config)# arp vrf vrf-name
ip-address mac-address ARPA
Creates a static ARP entry in the specified VRF.
Command Purpose
Switch# ping vrf vrf-name ip-host
Pings an IP host or address in the specified VRF.
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# interface
interface-id
Enters interface configuration mode and specifies the Layer 3 interface
to configure.
Step 3
Switch(config-if)# no switchport
Removes the interface from Layer 2 configuration mode if it is a
physical interface.