Sunday, March 3, 2019

Output drops - egress buffer overflow?

We have a juniper ex3400 switch connected to a juniper MX router via a 1gb link. The switch then has a bunch of servers connected via 1gb ports.

A lot of traffic from the servers passes through to the MX router. At busy times we are seeing a lot of output drops on the uplink to the router, pretty obvious it's due to congestion and RED kicking in.

Would aggregating more ports into a bundle for the uplink to the router resolve this or would we have to look at getting a switch with larger egress buffers?



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