Application Example 5
Page 24-11
The Solution
The recommended solution is to add a port policy to
VLAN D, as is shown in the figure
below. A port policy can be defined in addition to any other policies defined for a VLAN. If
VLAN D has a port policy that includes port 2 on Switch 1 and port 1 on Switch 2 – the ports
to which the backbone is connected – VLAN D and its internal router will activate immedi-
ately in both Switch 1 and Switch 2. Traffic (i.e., routing information) can then flow between
Switch 1 and Switch 2 over the backbone. Switch 1 will be aware of network 30 and Switch 2
will be aware of network 10.
12345678
123456
12345678
123456
Omni Switch/Router 2
Omni Switch/Router 1
IP Workstation
10.10.10.1
Port 1
IP Workstation
30.30.30.1
Port 2
Port 2
Port 1
VLAN C
IP address 10.10.10.0
10.10.10.2
Internal
IP
Router
20.20.20.3
20.20.20.4
Internal
IP
Router
30.30.30.2
VLAN E
IP address 30.30.30.0
Backbone
Adding a port policy to VLAN D
that includes the ports to which the
backbone is connected solves the
problem. VLAN D now activates
immediately – since it has ports
assigned – and traffic can flow
between the two switches.
VLAN D
IP address 20.20.20.0
Port 2
VLAN D
IP address 20.20.20.0
Port 1
Please Take Note
Refer to Chapter 20, “Configuring
Group and VLAN Policies,” for infor-
mation on original and current port
policy functionality.
