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BLADEOS 6.5.2 Application Guide
222 Chapter 15: Basic IP Routing BMD00220, October 2010
Using VLANs to Segregate Broadcast Domains
If you want to control the broadcasts on your network, use VLANs to create distinct broadcast
domains. Create one VLAN for each server subnet, and one for the router.
Configuration Example
This section describes the steps used to configure the example topology shown in Figure 25 on
page 221.
1. Assign an IP address (or document the existing one) for each router and each server.
The following IP addresses are used:
2. Assign an IP interface for each subnet attached to the switch.
Since there are four IP subnets connected to the switch, four IP interfaces are needed:
Table 20 Subnet Routing Example: IP Address Assignments
Subnet Devices IP Addresses
1 Default router 205.21.17.1
2 Web servers 100.20.10.2-254
3 Database servers 131.15.15.2-254
4 Terminal Servers 206.30.15.2-254
Table 21 Subnet Routing Example: IP Interface Assignments
Interface Devices IP Interface Address
IF 1 Default router 205.21.17.3
IF 2 Web servers 100.20.10.1
IF 3 Database servers 131.15.15.1
IF 4 Terminal Servers 206.30.15.1