I have a Cisco 2960 trunked to a Foundry switch. I have configured the trunk on the Cisco as follows:
rs-b3.ott26#sh int gi0/1 switchport
Name: Gi0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
On the Foundry, I have tagged all the VLAN's that are to be trunked over to the Cisco. However, when I do a sh span-tree I get the following output reporting that some of the VLAN's are broken. I have configured all the VLAN's the same way.
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 001a.6d4c.5180
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 001a.6d4c.5180
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi0/1 Desg BKN*4 128.25 P2p *PVID_Inc
VLAN0049
Spanning tree enabled protocol ieee
Root ID Priority 32817
Address 001a.6d4c.5180
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32817 (priority 32768 sys-id-ext 49)
Address 001a.6d4c.5180
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi0/1 Desg BKN*4 128.25 P2p *PVID_Inc
VLAN0061
Spanning tree enabled protocol ieee
Root ID Priority 32829
Address 001a.6d4c.5180
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32829 (priority 32768 sys-id-ext 61)
Address 001a.6d4c.5180
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi0/1 Desg BKN*4 128.25 P2p *PVID_Inc
