ES20 and ES+ Port Aggregation

huydien3384 · ‎03-31-2010

Hi pro,

Could these ports on ES20 and ES+ bundled together?

Giuseppe Larosa · ‎03-31-2010

Hello Huydien,

yes

see

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES20_config_guide/baldovw.html#wp1075778

Layer 2 Features

•Layer 2 switch port (EtherChannel only)

•EtherChannel and Link Aggregate Control Protocol (IEEE 802.3ad)

An EtherChannel bundles individual Ethernet links into a single logical link that provides the aggregate bandwidth of up to eight physical links.The EVC EtherChannel feature provides support for EtherChannels on Ethernet Virtual Connection Services (EVCS) service instances.

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html#wp1460596

comment:

these are ports with a lot of features so if you need a simple L2 etherchannel it would be better to use 2 ports of a simple GE linecard

Hope to help

Giuseppe

huydien3384 · ‎04-01-2010

Hi Giuseppe,

When I configured port-channel btw two port on different linecards, the router notified that cannot do that because qos-type of these line cards are not the same. I issued "no mls qos channel-consistency", but did not know how this impact the network performance.

Under default configuration ports in ES20, we have "mls qos trust", but not in ES+, so what is the alternative command for "trust qos" on ES+?

Thanks!

Giuseppe Larosa · ‎04-01-2010

Hello Huydien,

ES+ looks like to support modular QoS marking instead of port trust see

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap7.html#wp1374723

given this I'm afraid the QoS capabilities mismatch is real, you could implement a policy map to mark all incoming traffic but how to apply it only to a member of the bundle?

Hope to help

Giuseppe