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WS-X6548-GE-TX/Etherchannel

Hi,

The following excerpt is taken from Cisco documentation:

The WS-X6548-GE-TX, WS-X6548V-GE-TX, WS-X6148-GE-TX, and WS-X6148V-GE-TX modules have a limitation with EtherChannel. For EtherChannel, the data from all links in a bundle goes to the port ASIC, even though the data is destined for another link. This data consumes bandwidth in the 1-Gigabit Ethernet link. For these modules, the sum total of all data on an EtherChannel cannot exceed 1 Gigabit.

Does this apply to etherchannels that are created over multiple modules? ie: An 8 link etherchannel that has (card/port) 3/4, 4/4, 5/4, 6/4, 8/4, 9/4, 10/4, 11/4. Or does it apply to Etherchannel configurations on each module?

This configuration has the WS-X6548-GE-TX module and the SFM2 mod.

Any advice would be brilliant..

Regards

1 REPLY
Hall of Fame Super Bronze

Re: WS-X6548-GE-TX/Etherchannel

What the document is trying to explain is that the 6548 and 6148 are oversubscribed modules.

Which means a group of 8 ports can only provide 1Gbps throughput combined (8:1 oversubscribed).

If you were to configure an etherchannel for bandwidth aggregation, keep in mind to have the bundle ports on different modules in order to sustain maximum throughput and avoid packet loss.

HTH,

__

Edison.

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