3com 5500G ユーザーズマニュアル
Auto Detect Implementation in VRRP
69
# Detect the reachability of 10.1.1.3, with the next hop being 192.168.1.1/24,
and the detecting number being 1.
and the detecting number being 1.
[SwitchC-detect-group-9] detect-list 1 ip address 192.168.1.1 nextho
p 10.1.1.3
[SwitchC-detect-group-9] quit
# Configure a static route to Switch A.
[SwitchC] ip route-static 192.168.1.1 24 10.1.1.3
# Configure the master route, which is valid when the detected group is
reachable.
reachable.
[SwitchC] ip route-static 192.168.2.1 24 10.1.1.3 detect-group 9
# Configure the backup static route, and set its preference to 80. The backup
route is valid when the detected group is unreachable.
route is valid when the detected group is unreachable.
[SwitchC] ip route-static 192.168.2.1 24 10.1.2.2 preference 80
n
This configuration procedure only provides the auto-detect related configuration.
To ensure the normal communication between Host A and Host C, corresponding
static routes must already exist on Switch B and Switch D.
To ensure the normal communication between Host A and Host C, corresponding
static routes must already exist on Switch B and Switch D.
Complete Configuration
■
Configure Switch A
#
detect-group 8
detect-list 1 ip address 10.1.1.4 nexthop 192.168.1.2
#
ip route-static 10.1.1.0 255.255.255.0 192.168.1.2 preference 60
ip route-static 10.1.3.0 255.255.255.0 192.168.1.2 preference 60 de
tect-group 8
ip route-static 10.1.3.0 255.255.255.0 192.168.3.2 preference 80
#
■
Configure Switch C
#
detect-group 9
detect-list 1 ip address 192.168.1.1 nexthop 10.1.1.3
#
ip route-static 192.168.1.0 255.255.255.0 10.1.1.3 preference 60
ip route-static 192.168.2.0 255.255.255.0 10.1.1.3 preference 60 de
tect-group 9
ip route-static 192.168.2.0 255.255.255.0 10.1.2.2 preference 80
#
Precautions
None
Auto Detect
Implementation in
VRRP
Implementation in
VRRP
You can use the auto detect function on the master switch of a VRRP group to
detect the routes from the master switch to other networks, and use the detection
results (reachable/unreachable) to control the priority of the master switch, so as
to realize the automatic master-backup switchover:
detect the routes from the master switch to other networks, and use the detection
results (reachable/unreachable) to control the priority of the master switch, so as
to realize the automatic master-backup switchover: