Virtual Router Initiation; Adding Virtual Router Ip Addresses - Cisco MDS 9000 series Configuration Manual

Chapter 5 Configuring IP Services
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
To create or remove a VR for IPv4, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface vsan 10
switch(config-if)#
Step 3
switch(config-if)# vrrp 250
switch(config-if-vrrp)#
switch(config-if)# no vrrp 250
To create or remove a VR for IPv6, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# interface vsan 10
switch(config-if)#
Step 3
switch(config-if)# vrrp ipv6 250
switch(config-if-vrrp-ipv6)#
switch(config-if)# no vrrp ipv6 250

Virtual Router Initiation

By default, a virtual router is always disabled. VRRP can be configured only if this state is enabled. Be
sure to configure at least one IP address, either IPv4 or IPv6, before attempting to enable a VR.
To enable or disable a virtual router configure for IPv4, follow these steps:
Command
Step 1
switch(config-if-vrrp)# no shutdown
switch(config-if-vrrp)# shutdown
To enable or disable a virtual router configured for IPv6, follow these steps:
Command
Step 1
switch(config-if-vrrp-ipv6)# no shutdown
switch(config-if-vrrp-ipv6)# shutdown

Adding Virtual Router IP Addresses

One virtual router IP address can be configured for a virtual router. If the configured IP address is the
same as the interface IP address, this switch automatically owns the IP address. You can configure either
an IPv4 address or an IPv6 address.
According to the VRRP specification, the master VRRP router drops the packets addressed to the virtual
router's IP address because the virtual router is only intended as a next-hop router to forward packets. In
MDS switches however, some applications require that packets addressed to virtual router's IP address
be accepted and delivered to them. By using the secondary option to the virtual router IPv4 address, the
VRRP router will accept these packets when it is the master.
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
Purpose
Enters configuration mode.
Configures a VSAN interface (VSAN 10).
Creates VR ID 250.
Removes VR ID 250.
Purpose
Enters configuration mode.
Configures a VSAN interface (VSAN 10).
Creates VR ID 250.
Removes VR ID 250.
Purpose
Enables VRRP configuration.
Disables VRRP configuration.
Purpose
Enables VRRP configuration.
Disables VRRP configuration.
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
Virtual Router Redundancy Protocol
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