3Com 4007, Implementation Manual, Page: 413 / 684

Using VRRP On Your Switch 4007 413
Figure 49 Sample VRRP Topology with a Single Virtual Router
In this topology, there is a single point of failure (because there is a
one-armed router) between the left and right chassis. Loss of either the
CA2 module in the left chassis, or the CA3 module in the right chassis
results in loss of connectivity between the left chassis and the right
chassis.
Switch 4007
CA1 BA1
LAN
CA2
IP Addr
22.2.52.17
33.3.52.17
44.4.53.17
55.5.53.17
VRRP vid 52
backup
for subnets
22.2.52
33.3.52
44.4.53
55.5.53
Trunked
Link
IP Addr
22.2.52.16
33.3.52.16
44.4.53.16
55.5.53.16
VRRP vid 52
primary
for subnets
22.2.52
33.3.52
44.4.53
55.5.53
LAN
Switch 4007
CA3
CA4 BA2
All IP Addresses are submitted to a Class C with a mask of 255.255.255.0
1
2
3
4
= Default VLAN, on these ports
= Protocol VLAN, Protocol = IP, configured on this port
= VRRP configured on this port
IP=22.2.52.1, Gateway=22.2.52.16
1
2 IP=33.3.52.2, Gateway=33.3.52.16
3
IP=44.4.53.3, Gateway=44.4.53.16
4
IP=55.5.53.4, Gateway=5.5.53.16
Switch Fabric Module
Switch Fabric Module