Cabletron Systems GIGAswitch GSR-16, Руководство пользователя

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DIGITAL GIGAswitch/Router User Reference Manual 75
Configuring VRRP
Router R3 is the secondary Backup for virtual routers
VRID=1
and
VRID=2
. It would
become a Master router only if both Routers R1 and R2 should fail. In such a case, Router
R3 would become the Master for all three virtual routers.
Configuration of Router R1
The following is the configuration file for Router R1 in Figure 6 .
Router R1’s IP address on interface test is 10.0.0.1. There are three virtual routers on this
interface:
•
VRID=1
– IP address=10.0.0.1/16
•
VRID=2
– IP address=10.0.0.2/16
•
VRID=3
– IP address=10.0.0.3/16
Since the IP address of virtual router
VRID=1
is the same as the interface’s IP address
(10.0.0.1), then the router automatically becomes the address owner of virtual router
VRID=1
.
A priority is associated with each of the virtual routers. The priority determines whether
the router will become the Master or the Backup for a particular virtual router. Priorities
can have values between 1 and 255. When a Master router goes down, the router with the
next-highest priority takes over the virtual router. If more than one router has the next-
highest priority, the router that has the highest-numbered interface IP address becomes
the Master.
If a router is the address owner for a virtual router, then its priority for that virtual router
is 255 and cannot be changed. If a router is
not the address-owner for a virtual-router, then
its priority for that virtual router is 100 by default, and can be changed by the user.
1: interface create ip test address-netmask 10.0.0.1/16 port et.1.1
!
2: ip-redundancy create vrrp 1 interface test
3: ip-redundancy create vrrp 2 interface test
4: ip-redundancy create vrrp 3 interface test
!
5: ip-redundancy associate vrrp 1 interface test address 10.0.0.1/16
6: ip-redundancy associate vrrp 2 interface test address 10.0.0.2/16
7: ip-redundancy associate vrrp 3 interface test address 10.0.0.3/16
!
8: ip-redundancy set vrrp 2 interface test priority 200
9: ip-redundancy set vrrp 3 interface test priority 200
!
10: ip-redundancy start vrrp 1 interface test
11: ip-redundancy start vrrp 2 interface test
12: ip-redundancy start vrrp 3 interface test