We are having issues with a pair of EX3400s gaining access to our network running 18.3R3.8.
The pair of switches are in a virtual-chassis with a port-channel pair of interfaces up-linked to another EX3400 stack.
We can't seem to ping from the switch beyond the first hop switch while the aggregation port-channel is up.
We are noticing that when we disconnect one leg on our 2 port port-channel up-link then we can route without issue. (Doesn't matter which leg is removed.)
When we plug in the second port-channel interface, systems that were connected stay up but new user access ports can't access the network or pull dhcp addresses.
If anyone has seen this behavior and has a solution I would appreciate any feedback.
Thank you