Hi all, A few months ago, I asked the list about a problem I experienced with the ME3600 running MPLS on EFPs where the switch was dropping packets internally:
http://www.gossamer-threads.com/lists/cisco/nsp/174633#174633 I've had a ticket open with TAC since then and while I've been able to recreate it on my network, TAC has been unable to do so, so my ticket is in a black hole with the BU trying hard to focus on the Juniper routers in my network as the problem. Fast forward to last week when I tried to configure 'autoroute announce' on a tunnel on a switch in my lab and I'm now experiencing the same exact issue - the switch drops traffic internally, as though it's unable to impose a label on outbound traffic. It only does this on core-facing ports where the interconnection is an EFP. When configuring the port as a routed port or a normal switchport with an allowed vlan list, it all works as it should. This latest situation involves simply configuring 'autoroute announce' on a tunnel interface: interface Tunnel1 ip unnumbered Loopback1 tunnel mode mpls traffic-eng tunnel destination 10.10.8.3 tunnel mpls traffic-eng autoroute announce tunnel mpls traffic-eng path-option 1 dynamic end When this is configured, any traffic that is to be sent through the tunnel from sources one hop away from the ingress LSR is dropped inside the ingress LSR, as confirmed with a passive network tap on the core-facing port. Config of the core-facing port and SVI: interface GigabitEthernet0/24 switchport trunk allowed vlan none switchport mode trunk mtu 9000 spanning-tree bpdufilter enable spanning-tree bpduguard enable service instance 100 ethernet encapsulation dot1q 100 bridge-domain 100 ! interface Vlan100 mtu 9000 ip address 172.16.24.150 255.255.255.252 ip mtu 1500 ip router isis lab-test mpls ip mpls mtu 1546 mpls traffic-eng tunnels isis circuit-type level-2-only isis metric 100 isis hello-interval 3 end Some further details and lab topology: https://supportforums.cisco.com/message/4136776 Has anyone else experienced this? I've so far only tested 15.3(3)S, but given the other problem I was having with the exact same symptoms, I suspect it's also in various 15.2 versions. -evt _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
