Hi, Tonight we tried to bring up a second link between two 6500 (backup link). After bringing the link up one of the 6500 started logging (6500-2, config below):
Dec 4 01:54:13.067 NZDT: %SPANTREE-SP-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 53 on GigabitEthernet1/48 VLAN55. Dec 4 01:54:13.067 NZDT: %SPANTREE-SP-2-BLOCK_PVID_PEER: Blocking GigabitEthernet1/48 on VLAN0053. Inconsistent peer vlan. Dec 4 01:54:13.067 NZDT: %SPANTREE-SP-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/48 on VLAN0055. Inconsistent local vlan. Dec 4 01:54:13.071 NZDT: %SPANTREE-SP-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 56 on GigabitEthernet1/48 VLAN58. Dec 4 01:54:13.071 NZDT: %SPANTREE-SP-2-BLOCK_PVID_PEER: Blocking GigabitEthernet1/48 on VLAN0056. Inconsistent peer vlan. Dec 4 01:54:13.071 NZDT: %SPANTREE-SP-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/48 on VLAN0058. Inconsistent local vlan. Dec 4 01:54:13.155 NZDT: %SPANTREE-SP-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 57 on GigabitEthernet1/48 VLAN59. Dec 4 01:54:13.155 NZDT: %SPANTREE-SP-2-BLOCK_PVID_PEER: Blocking GigabitEthernet1/48 on VLAN0057. Inconsistent peer vlan. Dec 4 01:54:13.155 NZDT: %SPANTREE-SP-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/48 on VLAN0059. Inconsistent local vlan. As you can see from the config below - that only happend to some of the vlans. Unfortunately the other vlans weren't much happier - spanning tree allowed both ports to forward traffic which quickly overwhelmed the box, even thought 6500-1 stayed the root bridge and 6500-2 could see that through the primary interface. We tried to shut down the primary port to see if it fixes the problem, but even then there was no connectivity over the backup link. Configuration of the ports involved: 6500-1 (ports used gi1/47 - existing and gi1/38 - new/backup) interface GigabitEthernet1/47 description Layer 2 Trunk switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 30,48-63,70,80,81 switchport mode trunk no ip address interface GigabitEthernet1/38 description Layer 2 Trunk backup switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 30,48-63,70,80,81 switchport mode trunk no ip address and on 6500-2 (here the messages were logged, gi1/47 - existing, gi1/48 - new/backup) interface GigabitEthernet1/47 description Layer 2 Trunk switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 30,48-63,70,80,81 switchport mode trunk no ip address interface GigabitEthernet1/48 description Layer 2 Trunk backup switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 30,48-63,70,80,81 switchport mode trunk no ip address software (on both boxes): IOS (tm) s72033_rp Software (s72033_rp-ADVIPSERVICESK9_WAN-M), Version 12.2(18)SXF8, RELEASE SOFTWARE (fc2) Both boxes run vrf-lite and route on the svi interfaces, configuration of all of them is similiar to the one below: interface Vlan58 description mailbox ip vrf forwarding ContentInternal ip address 10.80.58.252 255.255.255.0 no ip proxy-arp standby 58 ip 10.80.58.254 both boxes have the same config (just different ips). Any ideas what might be causing the trouble? This was our second attempt to get it sorted (previously we though that an interface on 6500-1 was fried) and after checking all the obvious stuff (including cisco webpage) the second time - we're starting to run out of ideas. Any hints welcome. kind regards Pshem _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
