My friend asked me a question about a BVI used to combine one GigabitEthernet interface and one FastEthernetinterface.
The BVI is always working at the speed of 100 Mbps although stp is blocking the path through the FastEthernet (used as a backup path only). When he unplugs the fastethernet cable the bvi works at the gigabit speed but when he plugs it again it falls to the lowest speed. Can we force BVI someway to perform at the speed of the Gigabit interface and only fall back when the other path is not blocking? I know this doesn't seem to be logical but just maybe in case there's a way to help my friend :) Thanks, - Mohammad
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