Alastair Johnson <> wrote on Monday, August 11, 2008 12:56 PM:
> Hi,
>
> I am trying to understand how IOS implements the OSPF reference
> bandwidth related to LAG interfaces.
>
> The only background material I can find on this is along the lines of:
>
http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a008
0094704.shtml#q3
>
> Can anyone confirm whether LAG/Port-Channel interfaces have the
> reference BW recalculated based on the active member links?
>
> e.g. if I have ref BW = 100G, and a P-C with 2 10GE links, it should
> be metric = 5.
>
> If one 10GE link disappears from the bundle, do I have metric = 10?
yes, the bandwidth on the port-channel interface is based on the number
of active links, and OSPF's cost will adjust automatically.
oli
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