Hi,
I'm trying to deploy working STP enviroment where one side runs MST and
the other runs rapid-pvst, with diffent native vlans on both sides.
Scenario is quite complex, but I've stucked at the very beginning.
I need to carry two VLAN's over one single link, 728 being tagged.
Side A (7606 with RSP720)
STP mode rapid-pvst
Vlans 29,728
Interface configuration ->
interface TenGigabitEthernet1/1
description LINK-CUST
switchport
switchport trunk encapsulation dotq1
switchport mode trunk
switchport trunk allowed vlan 29,728
switchport trunk native vlan 29
switchport nonegotiate
load-interval 30
Side B (4948E)
STP mode MST
Vlans 120,728
MST config ->
instance 2 vlan 120
instance 4 vlan 728
Interface configuration ->
interface TenGigabitEthernet1/50
description Uplink-primary
switchport
switchport trunk native vlan 120
switchport trunk allowed vlan 120,728
switchport mode trunk
switchport nonegotiate
log from side B ->
%SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id
29 on TenGigabitEthernet1/50 VLAN120.
%SPANTREE-2-BLOCK_PVID_LOCAL: Blocking TenGigabitEthernet1/50 on MST0.
Inconsistent local vlan.
%SPANTREE-2-UNBLOCK_CONSIST_PORT: Unblocking TenGigabitEthernet1/50 on
MST0. Port consistency restored.
%SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id
29 on TenGigabitEthernet1/50 VLAN120.
%SPANTREE-2-BLOCK_PVID_LOCAL: Blocking TenGigabitEthernet1/50 on MST0.
Inconsistent local vlan.
C4948E-prgx#show spanning-tree interface Te1/50
Mst Instance Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- --------
--------------------------------
MST0 Desg BKN*2000 128.50 P2p Bound(PVST) *PVID_Inc
MST2 Desg BLK 2000 128.50 P2p Bound(PVST)
MST4 Desg BLK 2000 128.50 P2p Bound(PVST)
Can this be done (different native vlans) between PVST and MST enabled
switches?
Thank you!
Jiri Prochazka
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