1 SSID mapped to a group interface. What to do when default gateway is down?

[Khoa Pham]

I have

1 SSID, that is mapped to a group interface: GroupInterface01, which contains 2 dynamic interfaces:

Data1: in VLAN-10 with default gateway: 10.10.10.1

Data2: in VLAN-20 with default gateway: 10.10.20.1

Sometimes the default gateway of either Data1 or Data2 goes down, which makes half of the users not able to get out of the VLAN.

Is there a way to mitigate this? Maybe something in WLC to monitor the default gateways and stop sending users to that interface if the gateway is down?

[Rasika Nayanajith]

Vlan Select or Interface group should consider those sort of issues & mark that interface as "dirty" for period of time. In that way if DHCP attempt was not successful that interface is highly likely not to choose for pooling for a time period.

Refer below document

http://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/113465-vlan-select-dg-00.html

Having said that, what is the reason for these gateway go off line time to time. I would investigate that & fix it.

HTH

Rasika

*** Pls rate all useful responses ***

[yahya.jaber]

Shorten the DHCP lease...as the clients who are currently  connected or the wlc cant do anything  about the GW down.