The link aggregation combine a couple of physical links to a logic link. but which mac address is used for the LACP group?
TIA, st
The link aggregation combine a couple of physical links to a logic link. but which mac address is used for the LACP group?
TIA, st
LACP is a link-constrained protocol, i.e., LACP frames never leave the single physical link on which they are sent. Therefore, the MAC addresses used in LACP frames are the physical addresses of the individual ports, as opposed to the MAC address of an aggregated group of ports.
-- Rich Seifert Networks and Communications Consulting 21885 Bear Creek Way (408) 395-5700 Los Gatos, CA 95033 (408) 228-0803 FAX
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Bear Creek Way
Two questions over here:
5 Bear Creek Way
Yes, from the perspective of higher-layer protocols, the aggregation appears as a single MAC with a single MAC address. The MAC address of the aggregation can be any valid address, but by convention it is the MAC address of the physical port that has the lowest value when treated as a 48-bit number (similar to how the Root Port is determined in the Spanning Tree Protocol).
There is no concept of "primary port" or "member port" in Link Aggregation.
Yes.
-- Rich Seifert Networks and Communications Consulting 21885 Bear Creek Way (408) 395-5700 Los Gatos, CA 95033 (408) 228-0803 FAX
Send replies to: usenet at richseifert dot com
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