nanog mailing list archives

Re: is odd number of links in lag group ok


From: Jared Mauch <jared () puck nether net>
Date: Tue, 15 May 2018 11:20:47 -0400



On May 15, 2018, at 11:15 AM, Aaron Gould <aaron1 () gvtc com> wrote:

I have (2) 10 gig links bundled in a lag to my upstream internet provider.
and we need more internet capacity.  Is it cool to add a third 10 gig to my
existing 20 gig lag internet connection?



I'm asking since I heard in the past something negative about odd numbers of
lag members.  .but I also have heard that it's not a big deal.  Let me know
please


Much of this depends on the hardware, software and what hashing is used inbound
outbound traffic directions, etc.

It will likely work the way you expect, but one may be warmer than the other if
traffic ends up overloading a single bucket in the hash.

- Jared

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