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Configuring the PoS Module
Routing Over PoS Ports
While you can configure BCP to perform routing over PoS ports, IPCP might be a better
choice than BCP in those cases where the link will carry only routed IP traffic, because
it provides a more efficient encapsulation scheme than does BCP, and thereby increases
the maximum link throughput.
To take best advantage of the wire-speed layer 3 routing capabilities of the
BlackDiamond 6800 series switch using the PoS module, configure IPCP as the PPP
network control protocol to route between the PoS ports and any other VLANs. If you
do not configure APS, an IPCP port must be the only port in a VLAN.
BlackDiamond 1
1
2
3
4
A
B
5
6
Figure 3-2: IPCP configuration
Configuration Commands for IPCP
For the IPCP routing network configuration example shown in Figure 3-2, the default
configuration parameter settings for PoS ports should be suitable for most installations.
Thus, only minimal additional configuration is needed to get IPCP up and running on a
PoS port. The necessary configuration steps are:
1 Create a VLAN for each SONET port using the
2 Add each SONET port to a VLAN using the
command.
ports <port>
3 Define an IP router port on each VLAN by assigning an IP address to each VLAN
using the
config vlan <name> ipaddress <ipaddress> {<mask>}
and enable IF forwarding using the
3-6
7
8
8:1
IPCP
8:2
IPCP
enable ipforwarding
BlackDiamond 2
1
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4
A
B
1:1
1:3
create vlan <name>
config vlan <name> add
command.
Packet Over SONET Module Installation and User Guide
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PoS_006
command.
command,
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