Saturday, December 7, 2019

OSPF / BGP Load-balancing with multiple paths

I have googled this bit I'm struggling a bit to find a concise answer.

By default with multiple paths in the table what is the load sharing mechanism? Will a session with the same source/destination IP/port always take the same route? Or will it go over multiple paths on a per packet basis?

Reason I'm asking is that we have a VoIP platform whose gateway has multiple paths via ospf, with same cost, into our core network. We've had increased reports of audio issues since moving away from vrrp/static routes and towards L3 switch stack as a gateway with ospf routes to our core



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