Nortel Networks 212777 Free-Metric with Four-Subnet FWLB

Web OS 10.0 Application Guide
Chapter 13: Firewall Load Balancing 347
212777-A, February 2002
3. On the dirty-side Web switch, set the FWLB metric.
Any of the following load-balancing metrics can be used: hash, leastconns, roun-
drobin, minmiss, response, and bandwidth. See “Metrics for Real Server Groups”
on page 131 for details on using each metric.
NOTE – Some metrics allow other options (such as weights) to be configured.
Free-Metric with Four-Subnet FWLB
For this example, review the four-subnet example network.
Figure 13-9 Four-Subnet FWLB Example Network
>> # ../group 1
>> # metric <metric type>
Subnet 1 (VLAN 1):
195.1.1.0/24 Subnet 2 (VLAN 2): 10.10.2.0/24 Subnet 3 (VLAN 3): 10.10.3.0/24 Subnet 4 (VLAN 4): 10.10.4.0/24
Dirty Side Clean Side
Internet
1
1
2
2
9
9
3
3
4
4
9
9
Router
195.1.1.1
Router
195.1.1.2
Firewall #1
Dirty: 10.10.2.3
Clean: 10.10.3.3
Firewall #2
Dirty: 10.10.2.4
Clean: 10.10.3.4
10.10.4.20
10.10.4.21
10.10.4.22
Web Switch #3
IF1: 10.10.4.10
IF2: 10.10.3.1
IF3: 10.10.3.2/32
VIP: 10.10.4.100
Web Switch #4
IF1: 10.10.4.11
IF2: 10.10.3.11
IF3: 10.10.3.12/32
VIP: 10.10.4.100
Web Switch #1
IF1: 195.1.1.10
IF2: 10.10.2.1
IF3: 10.10.2.2/32
Web Switch #2
IF1: 195.1.1.11
IF2: 10.10.2.11
IF3: 10.10.2.12/32
VIR
195.1.1.9 VIR 10.10.2.9 VIR 10.10.3.9 VIR 10.10.4.9