Foundry Networks Switch and Router Installation And Configuration Manual page 174

Foundry Switch and Router Installation and Configuration Guide
Figure 6.2 shows an example of a Layer 2 switching configuration using Layer 2 POS.
Each client and its server on the other
Foundry device are in the same sub-net.
Traffic between each client and its server
is bridged over a PPP link on the SONET
link on the Layer 2 POS ports.
192.168.1.10
C1 E
192.168.2.10
C2 E
192.168.3.10
C3 E
192.168.4.10
C4 E
Foundry switch A
Figure 6.2 Basic POS Layer 2 switching configuration
This configuration shows four IP sub-nets. Each sub-net has members on both sides of the POS link. For
example, client C1 in the 192.168.1.x sub-net can communicate at Layer 2 with server S1 in the same sub-net,
even though the two devices are on different sides of the POS link.
6 - 12
Ethernet over POS
P
O
S
Each client and its server are in their
own port-based VLAN. The POS
ports are configured in all the client
or server VLANs.
E
E
P
O
S
E
E
Foundry switch B
192.168.1.20
S1
192.168.2.20
S2
192.168.3.20
S3
192.168.4.20
S4
December 2000