Vrrp Features; Vrrp Functionality - Cisco DS-C9216I-K9 Configuration Manual

Chapter 22 Configuring IP Services

VRRP Features

VRRP provides a redundant alternative path to the gateway switch, which has connectivity to the NMS.
VRRP has the following characteristics and advantages:
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VRRP Functionality

In Figure
have IP address to VRRP mapping configured. The other switches set switch A as the default gateway.
If switch A fails, the other switches don't have to change the routing configurations as switch B
automatically becomes the master and takes over the function of a gateway.
Figure 22-6
1.1.1.10
Switch A
Switch D
In Figure
cannot span across different types of interfaces. In both switch 1 and switch 2, the Ethernet interface is
in VR 1 and the FC interface is in VR 2. Each virtual router is uniquely identified by the VSAN interface
and the VR ID.
OL-7753-01
VRRP is a restartable application.
When a VRRP master fails, the VRRP backup takes over within three times the advertisement time.
VRRP over Ethernet, VRRP over VSAN, and Fibre Channel functions are implemented as defined
in RFC 2338.
A virtual router is mapped to each VSAN and Ethernet interface with its unique virtual router IP,
virtual router MAC, and VR ID.
VR IDs can be reused in multiple VSANs with a different virtual router IP mapping.
Up to 255 virtual router groups can be assigned in each VSAN.
VRRP security provides three options, including no authentication, simple text authentication, and
MD5 authentication.
22-6, switch A is the VRRP master and switch B is the VRRP backup switch. Both switches
VRRP Functionality
NMS
Ethernet
connection
1.2.11.1
VRRP
VSAN 1
1.2.11.4
22-7, the fabric example has two virtual router groups (VR1 and VR 2) because a virtual router
NMS
1.1.30
Switch B
1.2.11.2
Switch C
1.2.11.3
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
Configuring VRRP
22-11