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two CSM's in single chassis

AnuragKhare
Level 1
Level 1

hi folks

if we install two CSM's in the same 6500, can we load balance serverfarmA using CSM1 & serverfarmB using CSM2.

would the csm's be in csm mode or rp mode? would we need to configure them identically or use hsrp for failover?

any ideas appreciated since i have 0 experience with content stuff.

thanks,

anurag

1 Accepted Solution

Accepted Solutions

Gilles Dufour
Cisco Employee
Cisco Employee

there is no more rp mode. Everything must be csm mode nowadays.

If you put 2 CSM in the same chassis, they can workd independently and therefore be both acitve, or you can have the same config on both and work in active/standby.

With version 4.2.x and the corresponding ios version, there is a command to sync the config between active and standby so you don't have to configure everything twice. The command is 'hw-module ContentSwitching X standby config-sync'.

Regarding the serverfarm the question is not really important. You first have to decide if you want to be active/standby or active/active.

Be aware that if you go for active/active you have no backup [you can't be active and standby at the same time] and you will have to split your traffic between the 2 CSM by configuring different vservers on each.

Gilles.

View solution in original post

2 Replies 2

Gilles Dufour
Cisco Employee
Cisco Employee

there is no more rp mode. Everything must be csm mode nowadays.

If you put 2 CSM in the same chassis, they can workd independently and therefore be both acitve, or you can have the same config on both and work in active/standby.

With version 4.2.x and the corresponding ios version, there is a command to sync the config between active and standby so you don't have to configure everything twice. The command is 'hw-module ContentSwitching X standby config-sync'.

Regarding the serverfarm the question is not really important. You first have to decide if you want to be active/standby or active/active.

Be aware that if you go for active/active you have no backup [you can't be active and standby at the same time] and you will have to split your traffic between the 2 CSM by configuring different vservers on each.

Gilles.

hey,

thanks a bunch for the clarification gilles. that's exactly what i was looking for.

anurag