Hello All, We've run across a rather odd issue with inter-vlan/bridge-domain routing on a ME-3600X-24FS switch. When routing to a directly connected subnet from single tagged EVC's we don't see any issues. However, when routing from a double tagged EVC to a single tagged EVC, in different bridge-domain's, same VRF, routing dies. We can successfully PING from a host on the double tagged EVC to an IP on the opposite bridge-domain/vlan configured locally on the 3600X, just not a host connected to the single tagged EVC. We can also successfully PING from a host on the double tagged EVC to a host on the same bridge-domain on a single tagged EVC. So the issue here seems to be from a double tagged EVC to a single tagged EVC, located in a different bridge-domain, same VRF. From all of our testing this is starting to look like a possible IOS bug. However, we wanted to run this past the community first in case anyone has run into a similar issue or had any suggestions. Sample config: Double tagged EVC on G0/1: service instance 1 ethernet description (removed) encapsulation dot1q 1101 second-dot1q 1104 rewrite ingress tag pop 2 symmetric bridge-domain 99 ! Single tagged EVC on G0/2: service instance 3 ethernet description (removed) encapsulation dot1q 98 rewrite ingress tag pop 1 symmetric bridge-domain 98 ! VLAN interface config: interface Vlan98 description (removed) ip vrf forwarding MGMT ip address 10.64.0.129 255.255.255.240 ! interface Vlan99 description (removed) ip vrf forwarding MGMT ip address 10.64.2.1 255.255.254.0 !
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