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Configuring the PoS Module
BlackDiamond 1
1
2
3
4
SONET
Customer
switch 1
Figure 3-20: Port tunneling via a PPP link
When you configure a PoS port for HDLC tunneling, make sure PPP is not configured
and BCP and IPCP are off. Furthermore, the PoS port should be the only port in the
VLAN, and an MPLS tls-tunnel should be configured for this VLAN. For more
information about MPLS and MPLS commands, see the MPLS Installation and User
Guide. The payload inside the HDLC can be PPP or another HDLC encapsulated
protocol. SONET Automatic Protection Switching (APS) is supported between tunneled
PoS ports on the same module or different modules in the same switch. APS is not
supported for tunneled PoS ports on different switches. By default, HDLC tunneling is
turned off on PoS ports.
The following sections describe how to configure a port tunnel.
Configuring the PoS Port Tunnel
The following configuration commands apply to the PoS module installed in slot 1 of
BlackDiamond switch 1, as shown in Figure 3-20.
3-98
MPLS
10.1.1.1
over
Ethernet
A
B
5
6
7
8
HDLC tunnel
PPP payload
BlackDiamond 2
10.1.1.2
1
2
3
4
A
B
5
6
7
8
SONET
Packet Over SONET Module Installation and User Guide
Customer
switch 2
PoS_029
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