3Com WX1200 3CRWX120695A Configuration Manual page 185

MAP Overview 185
Dual-Homed Configuration Examples
The following sections show examples of dual-homed configurations.
You can use any of these configurations to dual home a MAP model that
has two Ethernet ports. MAP models with one Ethernet port support only
the dual-homing configuration in "Dual-Homed Distributed Connections
to WX Switches on One MAP Port" on page 188.
Dual-Homed Direct Connections to a Single WX Figure 9 shows an
example of a dual-homed direct connection to one WX switch. In this
configuration, if the MAP's active data link with the WX switch fails, the
MAP detects the link failure and restarts using the other link on the same
switch.
Figure 9 Dual-Homed Direct Connections to a Single WX
WX switch
MAP
Dual-Homed Direct Connections to Two WX Switches Figure 10
shows an example of a dual-homed direct connection to two separate
WX switches. In this configuration, if the active data link fails, the MAP
detects the link failure and restarts using a link to the other switch.
Figure 10 Dual-homed Direct Connections to Two WX Switches
Network
backbone
WX switch WX switch
MAP