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5-30 Riverstone Networks RS Switch Router User Guide Release 8.0
Tunneling VLAN packets across MANs Bridging Configuration Guide
Note
If you do not want multicast or broadcast traffic from C1 on R1 to be seen by C1
on R3, then configure a different backbone VLAN on R3.
STP/GVRP in Customer VLANs Tunneled over Backbone VLAN
STP, RSTP, or GARP/GVRP can be run in the customer VLANs which are tunneled over the backbone VLAN. The
customer VLAN does not need to be reconfigured in order to be tunneled.
In Figure 5-9, traffic for customer C1’s VLAN (BLUE) and for customer C2’s VLAN (GREEN) is tunneled through
the backbone VLAN (RED). STP is enabled in the customer VLAN BLUE on the customer routers C1R1 and C1R2
for customer C1.
Figure 5-9 STP enabled in customer VLANs
The following configuration statements on C1R1 enable STP on port et.1.1, the port that is connected to the tunnel
entry port.
! Create customer VLAN
vlan create BLUE port-based
! Add port to VLAN
vlan add ports et.1.1 to BLUE
! Make port et.1.1 a trunk port
vlan make trunk-port et.1.1
! Enable STP on et.1.1
stp enable port et.1.1
! Optional STP configurations
stp set bridging hello-time 3
et.2.1
et.3.1
et.4.1
et.5.1
et.6.1
et.7.1
MAN
RED VLAN (backbone)
BLUE VLAN
GREEN VLAN
C1
C2
C1
C2
et.1.1
et.8.1
R2R1
C1R1
C1R2