Having problems tunneling vstp
Cisco Customer Switch----> g1/0/4 Cisco 3750(CPE) g1/0/5---->ge-0/01 Ex4300(CPE) ge-0/0/2---->Cisco Customer Switch
QinQ tunnel is done between Cisco 3750 and EX4300.
Everything workds except vstp the ciso switch cannot see bpdus incoming from the far end in vstp.
WHile rstp works.
EX4300 Config:
# show protocols layer2-control
mac-rewrite {
interface ge-0/0/2 {
protocol {
stp;
vtp;
cdp;
vstp;
}
}
}
# show interfaces
ge-0/0/1 {
flexible-vlan-tagging;
native-vlan-id 906;
mtu 9216;
encapsulation extended-vlan-bridge;
unit 32 {
vlan-id 32;
}
unit 910 {
vlan-id 910;
}
}
ge-0/0/2 {
description C3750-2;
flexible-vlan-tagging;
native-vlan-id 906;
mtu 9216;
encapsulation extended-vlan-bridge;
unit 0 {
vlan-id-list 1-4094;
input-vlan-map push;
output-vlan-map pop;
}
}
#show vlans
QinQ_Interface {
interface ge-0/0/1.910;
interface ge-0/0/2.0;
}
Cisco 3750 CPE COnfig:
interface GigabitEthernet1/0/5
description towards ex4300 ge-0/0/1
switchport trunk encapsulation dot1q
switchport mode trunk
speed 100
!
interface GigabitEthernet1/0/4
description "To C2960"
switchport access vlan 910
switchport mode dot1q-tunnel
load-interval 60
speed 100
l2protocol-tunnel cdp
l2protocol-tunnel lldp
l2protocol-tunnel stp
l2protocol-tunnel vtp
no cdp enable
!
-----------------------------------------------------------------------------------
CDP works, RSTP works but vstp doesn't work
both ciso cuseomter switches think they are root when issuing the command show spanning tree
Anyone has an idea what's going on ?