Hello,

In reviewing our BGP routing policies last week, I realized that we are advertising our address space upstream in slightly different ways to our two upstream providers.  For example, we might advertise a /21 to one provider and break that into two /22s when advertising it to the other.  (The reason this was done was to help with traffic engineering--we'd prepend one of the /22s to help balance the traffic.  Prepending the entire /21 might have been too much.)

I'm just wondering if that's acceptable practice, or if we should advertise consistent prefixes between providers?

Thanks,
Ben

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Ben Logan
Senior Network Engineer | Working Lead
Wilkes Communications | RiverStreet Networks
 
Address: 1400 River St Wilkesboro, NC 28697
Phone: 336-973-9075
Mobile: 336-452-8072
 

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