Controller-less WLANs

What is the upper limit for adding number of VC IPs and Client subnets under Layer-3 (L3) mobility?

by ‎07-16-2015 04:36 AM - edited ‎07-16-2015 04:36 AM
Q:

What is the upper limit for adding number of VC IPs and Client subnets under Layer-3 (L3) mobility?



A:

Layer-3 (L3) Mobility introduction:

L3 mobility allows a client to roam without losing its IP address sessions. If WLAN access parameters are same across these networks, clients connected to IAPs in a given Instant network can roam to APs in a foreign Instant network and continue their existing sessions. Clients roaming across these networks are able to continue using their IP addresses after roaming.

The Instant network to which the client first connects is called its home network. When the client roams to a foreign network, an AP in the home network (home AP) anchors all traffic to or from this client. The AP to which the client is connected in the foreign network (foreign AP) tunnels all client traffic to or from the home AP through a GRE tunnel.

 

Configuration and it's upper limit:

Instant network can have 8 VC IPs and 64 Client subnets.

 

Virtual Controller IP address:

 

6c:f3:7f:c3:67:4a (config) # l3-mobility

6c:f3:7f:c3:67:4a (L3-mobility) # virtual-controller <IP>

6c:f3:7f:c3:67:4a (L3-mobility) # virtual-controller 9.9.9.9

6c:f3:7f:c3:67:4a (L3-mobility) # end

6c:f3:7f:c3:67:4a# commit apply

committing configuration...

Only 8 Virtual Controllers are supported

6c:f3:7f:c3:67:4a#

 

Client Subnets:

 

d8:c7:c8:c8:1b:75 (config) # l3-mobility

d8:c7:c8:c8:1b:75 (L3-mobility) # subnet <> <mask> <client VLAN ID> <VC IP>

d8:c7:c8:c8:1b:75 (L3-mobility) # subnet 10.21.126.0 255.255.255.0 126 10.21.96.250

d8:c7:c8:c8:1b:75# commit apply

committing configuration...

Only 64 Manually subnets supported

d8:c7:c8:c8:1b:75#

 

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