3com Corebuilder 7000

[l1carter]

All,

I am in the process of starting down the road of migrating off of an atm backbone using 3com corebuilder 7000 to Cisco's.

The question i have is for the migration I need to connect a corebuilder 7000 to my Cisco network at speeds greater than 100 meg due to performance.

Can you etherchannel (port trunk) a Corebuilder 7000 if you have the correct code?

If not...

It appears as if there is a 4-port gig ethernet module for corebuilder 7000HD's... how do I see if what I have is an "HD" or not to konw weather or not it will take this gig module?

Thanks,

 

[TimRegester]

No you cannot etherchannel on a Corebuilder 7000. There was never any mechanism for doing this. The last version of code in 2000 had no such ability and as I recall even if development of the code had continued this would not have happened, there may have beed development of LACP.

As for gigabit modules for a Corebuilder the part you want is a Corebuilder 7800 card. There were not many sold of these but second hand ones should be out there somewhere.

Do not even attempt to use an ATM to ATM solution for the 3Com to Cisco migration, it is a guaranteed disaster due to the non standard way Cisco implemented LANE on the Cisco switches, e.g. Spanning Tree on ATM not supported on the 3Com as ATM LANE does not need spanning tree being fully meshable.