Figure 13-9 Four-Subnet Fwlb Example Network - Nortel Web OS Switch Software Application Manual

3. On the dirty-side Web switch, set the FWLB metric.
>> # ../group 1
>> # metric <metric type>
Any of the following load-balancing metrics can be used: hash, leastconns, roun-
drobin, minmiss, response, and bandwidth. See
on page 131
N
OTE
Free-Metric with Four-Subnet FWLB
For this example, review the four-subnet example network.
Internet

Figure 13-9 Four-Subnet FWLB Example Network

212777-A, February 2002
for details on using each metric.
– Some metrics allow other options (such as weights) to be configured.
Dirty Side
Subnet 1 (VLAN 1):
195.1.1.0/24
Web Switch #1
IF1: 195.1.1.10
IF2: 10.10.2.1
IF3: 10.10.2.2/32
Router
195.1.1.1
1
195.1.1.9
1
Router
195.1.1.2
Web Switch #2
IF1: 195.1.1.11
IF2: 10.10.2.11
IF3: 10.10.2.12/32
Subnet 2 (VLAN 2): Subnet 3 (VLAN 3):
10.10.2.0/24 10.10.3.0/24
Firewall #1
Dirty: 10.10.2.3
Clean: 10.10.3.3
2
9
VIR VIR
10.10.2.9
9
2
Firewall #2
Dirty: 10.10.2.4
Clean: 10.10.3.4
Chapter 13: Firewall Load Balancing
Web OS 10.0 Application Guide
"Metrics for Real Server Groups"
Clean Side
Subnet 4 (VLAN 4):
10.10.4.0/24
Web Switch #3
IF1: 10.10.4.10
IF2: 10.10.3.1
IF3: 10.10.3.2/32
VIP: 10.10.4.100
3 4
9
VIR VIR
10.10.3.9 10.10.4.9
9
3 4
Web Switch #4
IF1: 10.10.4.11
IF2: 10.10.3.11
IF3: 10.10.3.12/32
VIP: 10.10.4.100
10.10.4.20
10.10.4.21
10.10.4.22
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347