Cisco DS-C9216I-K9, Руководство по настройке

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Cisco MDS 9000 Fabric Manager Switch Configuration Guide
OL-7753-01
Chapter 22 Configuring IP Services
Configuring VRRP
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:
•
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.
VRRP Functionality
In Figure 22-6 , switch A is the VRRP master and switch B is the VRRP backup switch. Both switches
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 VRRP Functionality
In Figure 22-7 , the fabric example has two virtual router groups (VR1 and VR 2) because a virtual router
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.
NMS
1.2.11.1
1.1.1.10 1.1.30
1.2.11.2
1.2.11.4 1.2.11.3
VSAN 1
VRRP
Switch C Switch D
Switch B Switch A
NMS
Ethernet
connection
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