Strange connectivity issue Frontier EVPL
jay at west.net
Fri Nov 6 16:59:28 UTC 2020
We have a strange issue that defies logic. We have a NNI at our POP with
Frontier serving as an aggregation circuit with different customers on
different VLANs. It's working well to several customers.
Bringing up a new customer shows roughly half of the IP addresses
unreachable across the link, as if there's some kind of load-balancing
or hashing function that's mis-directing half of the traffic. It's
consistent, if an address is reachable it's always reachable. If it's
not reachable, it's never reachable. Everything ARPs fine.
The Frontier circuit is layer 2 so shouldn't care about IP addresses.
Frontier tech shows no trouble. They changed the RAD device on-premise.
We've triple-checked configurations, torn down and rebuilt subinterface,
etc. with no joy.
Jay Hennigan - jay at west.net
Network Engineering - CCIE #7880
503 897-8550 - WB6RDV
More information about the NANOG