09-03-2008 03:06 PM
I have been looking for a configuration example of CSM redundancy using two 6500 with a single CSM each in bridge mode.
I already have one CSM working in one of the 6500s, I'm planning to install the second CSM to provide redundancy.
Let's say that I'm using the following configuration in my working CSM:
module ContentSwitchingModule 3
vlan 210 client
ip address 192.168.223.131 255.255.255.192
gateway 192.168.223.129
!
vlan 323 server
ip address 192.168.223.131 255.255.255.192
!
serverfarm FTPFARM
nat server
no nat client
real 192.168.223.141
inservice
real 192.168.223.142
inservice
!
serverfarm HTTPSFARM
nat server
no nat client
real 192.168.223.136
inservice
real 192.168.223.137
inservice
!
vserver FTPVIP
virtual 192.168.223.140 tcp ftp
serverfarm FTPFARM
persistent rebalance
inservice
!
vserver HTTPSVIP
virtual 192.168.223.135 tcp https
serverfarm HTTPSFARM
persistent rebalance
inservice
!
vserver HTTPVIP
virtual 192.168.223.145 tcp www
serverfarm HTTPSFARM
persistent rebalance
inservice
!
What would I need to do in order to make it work in redundant mode with the other CSM?
09-04-2008 04:27 AM
You will need to add IPs for the CSM peer on current CSM. The current config will
be something like this (where x1 & x2 are the IP addr of the secondary CSM)
for e.g.
module ContentSwitchingModule 3
vlan 210 client
ip address 192.168.223.131 255.255.255.192 alt 192.168.223.x1
gateway 192.168.223.129
!
vlan 323 server
ip address 192.168.223.131 255.255.255.192 alt 192.168.223.x2
Then you need to configure a FT VLAN on MSFC (both chasis).For E.g if 900 is the FT VLAN then
your FT config will be some thing like this
ft group 1 vlan 900
priority 20 alt 15
heartbeat-time 1
failover 3
preempt
ON secondary CSM just put these lines and the config will be syncronized
module ContentSwitchingModule 3
vlan 210 client
ip address 192.168.223.x1 255.255.255.192 alt 192.168.223.131
gateway 192.168.223.129
!
vlan 323 server
ip address 192.168.223.x2 255.255.255.192 alt 192.168.223.131
ft group 1 vlan 900
priority 15 alt 20
heartbeat-time 1
failover 3
preempt
For details
Syed
09-04-2008 06:38 AM
Many thanks for your help Syed.
09-04-2008 06:43 AM
Eventhough it is bridge mode the IP addresses for the second CSM should be different (x1 & x2)?
I have only seen examples in routed mode and there it makes sense that those IP addresses are different.
Have you ever configured something like this?
09-04-2008 08:16 AM
Redundancy is the same in router mode vs. bridge mode: you cannot configure the same IP address for the CSM management IP's on the 2 CSM's.Each CSM in a redundant pair independently keeps track of the availabilty/health of the Servers using probes.
Syed
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