topic multicast over etherchannel in Switching

multicast over etherchannel

phillipediab — Wed, 06 Mar 2019 02:43:03 GMT

does etherchannel cause multicast packets to be received out of sequence, gapping, duplicate..etc ??? in general, would etherchannel affect multicast traffic ?

Re: multicast over etherchannel

nambi_gct — Thu, 27 Sep 2007 00:46:32 GMT

etherchannel should NOT affect multicast.From software perspective it is just an interface, though there are many physical interfaces.Whether unicast or multicast, ether channel load sharing happens in the same way.There is no possibility of duplicate introduced by etherchannel.

Re: multicast over etherchannel

Edison Ortiz — Thu, 27 Sep 2007 00:47:45 GMT

The traffic will be treated the same as unicast. No out of sequence, gaping or duplicate should be seen. The hashing algorithm when distributing the load will prevent that.

You can change the load balancing on the etherchanneling depending upon your switch.

Load balancing can be:

port-channel load-balance {dst-ip | dst-mac | src-dst-ip | src-dst-mac | src-ip | src-mac}

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/configuration/guide/swethchl.html#wp1276203

Re: multicast over etherchannel

phillipediab — Thu, 27 Sep 2007 14:01:22 GMT

Thanks -

Re: multicast over etherchannel

phillipediab — Thu, 27 Sep 2007 14:01:47 GMT

thanks -

multicast over etherchannel

ramixpe81 — Wed, 28 Dec 2011 08:56:02 GMT

i thought the multicast will go only through the default port !!

Re: multicast over etherchannel

Peter Paluch — Wed, 28 Dec 2011 10:09:42 GMT

Hello,

The default port was a concept used, to my best knowledge, only on 2900XL/3500XL/2950/2955/3550 Catalyst switches. Newer switches do not implement the concept of a default port in an EtherChannel bundle, and instead, load-balance all traffic using the same hashing mechanism.

See the following document for more information (search for the "default port" in the document contents):

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080094714.shtml

Best regards,

Peter

Re: multicast over etherchannel

ramixpe81 — Wed, 28 Dec 2011 10:23:30 GMT

helpfull thank you

Re: multicast over etherchannel

Sociable Wilson — Tue, 01 Nov 2022 08:50:50 GMT

May i ask what hashing algorithm are you talking about? Thanks.