multilink 7609 multiple flexwan modules

Answered Question
Jun 26th, 2010

Dear Friends,


I have replaced 7507s with two 7609s, which is having multple intercity links terminated.other end is terminated in 7200/7500.


These 7609s are having two flex wan modules, I want to terminate links on different modules for redundancy other end is going to same device.


when im trying to budle the links with multilink , observing strange behaviour.


1. Point to point links are pining fine.


2. Traffic is not passing through multilink ( not going to next hop)


3. fragmnetation errors are received.


If im terminating the same links to one flexwan module ( instead of connecting them to different modules) , Its working fine.


Did anyone faced this kinda issues ? ... solved ?:P


Please help.

Correct Answer by Giuseppe Larosa about 6 years 8 months ago

Hello Raij,


unforturnately multilink over ports of different PA on different flexwan modules is not supported you need to change your IP address plan in order to use each link as an indipendent L3 link


see

. All lines in a bundle must  reside on the same port adapter.

MLPPP bundles across FlexWAN or  Enhanced FlexWAN port adapters are not supported.


http://www.cisco.com/en/US/docs/routers/7600/install_config/flexwan_config/features.html#wp84027


this is big difference with older C7500 that supported it


Hope to help

Giuseppe


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Correct Answer
Giuseppe Larosa Mon, 06/28/2010 - 03:10

Hello Raij,


unforturnately multilink over ports of different PA on different flexwan modules is not supported you need to change your IP address plan in order to use each link as an indipendent L3 link


see

. All lines in a bundle must  reside on the same port adapter.

MLPPP bundles across FlexWAN or  Enhanced FlexWAN port adapters are not supported.


http://www.cisco.com/en/US/docs/routers/7600/install_config/flexwan_config/features.html#wp84027


this is big difference with older C7500 that supported it


Hope to help

Giuseppe


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