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5-22 Riverstone Networks RS Switch Router User Guide Release 8.0
Tunneling VLAN packets across MANs Bridging Configuration Guide
The following is the configuration for R2:
Multiple Customers with Common VLANs
In Figure 5-5, customers C1 and C2 are connected to the MAN, with both customers using the same VLAN (BLUE).
To ensure that traffic for C1 is not sent to C2 and vice versa, the backbone VLAN for each customer must be different.
Therefore, traffic for customer C1 will be sent on the backbone VLAN RED, while traffic for customer C2 will be sent
on the backbone VLAN GREEN. Note that the trunk port on each router is part of both backbone VLAN RED and
backbone VLAN GREEN.
Figure 5-5 Multiple customers with common VLANs
! Create 1 backbone VLAN and 2 customer VLANs
vlan create RED port-based
vlan create GREEN port-based
vlan create BLUE port-based
! Add port to each VLAN
vlan add ports et.6.1 to BLUE
vlan add ports et.7.1 to GREEN
vlan add ports et.5.1 to RED
! Make et.5.1 both a trunk port and a tunnel backbone port
vlan make trunk-port et.5.1 stackable-vlan
! Map tunnel exit ports to backbone VLAN
vlan enable stackable-vlan on et.6.1 backbone-vlan RED
vlan enable stackable-vlan on et.7.1 backbone-vlan RED
BLUE VLAN
et.2.1
et.3.1
et.6.1
et.7.1
C1
C2
C1
C2
et.4.1 et.5.1
MAN
RED VLAN
GREEN VLAN
R1 R2