Extreme Networks BlackDiamond 6800 MPLS Installation And User Manual page 129

CUSTOMER SITE 1
CUSTOMER SITE 2
Figure 7-6: Tunnel endpoint VLANs
In Figure 7-6, redundant LSRs are installed at both ends of a TLS tunnel. This example
takes advantage of the IP multinetting feature in ExtremeWare by creating an overlay
tunnel endpoint VLAN that shares the same Ethernet ports as the user VLAN that is
extended across the MPLS backbone network. A tunnel endpoint VLAN is created at
both sites.
ESRP is enabled on the tunnel endpoint VLANs and the user VLANs. To ensure that the
same LSR is selected as the ESRP master for both VLANs, the ESRP configuration of the
user VLAN and the associated tunnel endpoint VLAN must be identical. Enabling ESRP
MPLS Module Installation and User Guide
config mpls add tls-tunnel tls1
User VLAN (ESRP enabled)
Tunnel Endpoint VLAN (ESRP enabled)
IP IP
U1 T1
LSR A
ESRP master
Active Inactive
Tunnel Tunnel
LSPs LSPs
LSR C
ESRP master
IP IP
U2 T2
Tunnel Endpoint VLAN (ESRP enabled)
User VLAN (ESRP enabled)
config mpls add tls-tunnel tls1 IP
TLS command issued on LSR A & LSR B:
IP user tls-labels 8f002 81001
T2
ESRP slave
ESRP slave
TLS command issued on LSR C & LSR D:
user tls-labels 8f001 81002
T1
Using ESRP with MPLS TLS
IP IP
T1 U1
LSR B
MPLS
NETWORK
LSR D
IP IP
T2 U2
MPLS_07
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