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Chapter 4: Configuration
Configuring Policy-Based Routing
IP policy-based routing allows you to configure the IA 1100/1200 to route IP packets
according to policies that you define. You can define policies that make the most efficient
use of your network resources.
In the example shown in Figure 9, Internet access is provided for two classes of users:
•
"Standard" users, who are provided with T1 link connections (the T3 link is used only
in the event of failure of the T1 link)
•
"Premium" users, who are provided with connections through the faster T3 link (the
T1 link is used only in the event of failure of the T3 link)
Internet
T1
T3
207.86.7.2
207.86.9.2
207.86.9.1/24
207.86.7.1/24
The following are the basic steps for configuring the IA:
1.
Create the interfaces for the T1 and T3 link connections and assign address-netmask
values to each interface.
The following commands create the interfaces 'int-t1' (for the T1 link) on port et. 1.1
and 'int-t3' (for the T3 link) on port et. 1.2 and assigns them the address-netmask values
of 207.86.7.1/24 and 207.86.9.1/24, respectively:
ia(config)# interface create ip int-t1 address-netmask 207.86.7.1/24 port et.1.1
ia(config)# interface create ip int-t3 address-netmask 207.86.9.1/24 port et.1.2
2.
Create the interfaces through which the customers will be connected and assign
address-netmask values to each interface.
40
10/100BASE-TX
1
2
3
4
5
6
7
8
3
10/100BASE-TX
1
2
3
4
5
6
7
8
10/100 MGMT
1
OK
ERR
Figure 9. Policy-Based Routing Example
P rem ium
U sers
Remote
Access
Server
1000BASE-SX
1
2
4
Tx
Link
Tx
Link
Rx
AN
Rx
AN
1
2
3
4
5
6
7
8
10/100BASE-TX
CONSOLE
2
HBT
DIAG
207.86.12.1/24
207.86.13.1/24
Internet Appliance 1100/1200 Getting Started Guide
Standard
Users
Remote
Access
Server
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