Dell PowerConnect W-IAP92 Dell Instant 6.2.0.0-3.2.0.0 User Guide - Page 92

Configuring a Mobility Domain, Settings, Show advanced options, L3 Mobility

Page 92 highlights

client. If the AP has no GRE tunnel to this home network, a new tunnel is formed to an AP (home AP) from the client's home network. Each foreign AP has only one home AP per W-Instant network to avoid duplication of broadcast traffic. Separate GRE tunnels are created for each foreign AP / home AP pair. If a peer AP is a foreign AP for one client and a home AP for another, two separate GRE tunnels are used to handle L3 roaming traffic between these APs. If client subnet discovery fails on association due to some reason, the foreign AP identifies its subnet when it sends out the first L3 packet. If the subnet is not a local subnet and belongs to another Instant network, the client is treated as an L3 roamed client and all its traffic is forwarded to the home network via a GRE tunnel. Configuring a Mobility Domain To configure a mobility domain, you have to specify the list of all W-Instant networks that form the mobility domain. In order to allow clients to roam seamlessly among all the APs, specify the Virtual Controller IP for each foreign subnet. You may include the local Instant/ VC IP address, so that the same configuration can be used across all W-Instant networks in the mobility domain. Best practice is to configure all client subnets in the mobility domain so that: l If the client is from the local subnet, it is determined to be a local client as soon as it starts using the IP address and L3 roaming is aborted. l If the client is from a foreign subnet, it is determined to be a foreign client as soon as it starts using the IP address and L3 roaming is immediately set up. Perform the following steps to configure a mobility domain: 1. Click the Settings link at the upper right corner of the Dell W-Series Instant UI. 2. Click the Show advanced options link and then click L3 Mobility. 3. Click New in the Virtual Controller IP Addresses section, add the IP address of a VC that is part of the mobility domain, and click OK. 92 | Layer-3 Mobility Dell PowerConnect W-Series Instant Access Point 6.2.0.0-3.2.0.0 | User Guide

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92
|
Layer-3 Mobility
Dell PowerConnect W-Series Instant Access Point
6.2.0.0-3.2.0.0
|
User Guide
client. If the AP has no GRE tunnel to this home network, a new tunnel is formed to an AP (home
AP) from the client's home network.
Each foreign AP has only one home AP per W-Instant network to avoid duplication of broadcast
traffic. Separate GRE tunnels are created for each foreign AP / home AP pair. If a peer AP is a
foreign AP for one client and a home AP for another, two separate GRE tunnels are used to handle
L3 roaming traffic between these APs.
If client subnet discovery fails on association due to some reason, the foreign AP identifies its
subnet when it sends out the first L3 packet. If the subnet is not a local subnet and belongs to
another Instant network, the client is treated as an L3 roamed client and all its traffic is forwarded
to the home network via a GRE tunnel.
Configuring a Mobility Domain
To configure a mobility domain, you have to specify the list of all W-Instant networks that form
the mobility domain. In order to allow clients to roam seamlessly among all the APs, specify the
Virtual Controller IP for each foreign subnet. You may include the local Instant/ VC IP address, so
that the same configuration can be used across all W-Instant networks in the mobility domain.
Best practice is to configure all client subnets in the mobility domain so that:
l
If the client is from the local subnet, it is determined to be a local client as soon as it starts
using the IP address and L3 roaming is aborted.
l
If the client is from a foreign subnet, it is determined to be a foreign client as soon as it starts
using the IP address and L3 roaming is immediately set up.
Perform the following steps to configure a mobility domain:
1.
Click the
Settings
link at the upper right corner of the Dell W-Series Instant UI.
2.
Click the
Show advanced options
link and then click
L3 Mobility
.
3.
Click
New
in the
Virtual Controller IP Addresses
section, add the IP address of a VC that is
part of the mobility domain, and click
OK
.