UC520 > vlans unreachable when nothing's plugged in?
I have a strange problem.. I have a UC520 that is at a hosting facility. I have couple remote users at remote sites connected via VPN using phones behind SR routers.. everything works ok.
My issue is this - I have a small laptop connected to the ethernet port of the UC520 and as soon as I unplug this, phones do not come up. When I VPN to the UC520 from the outside, I can only ping 10.1.10.1 and not 10.1.1.1 or 192.168.10.1.. seems like the vlans are not up when nothing is physically plugged into the ethernet ports. When I plug the laptop back in, system is up and running again...
1. Has anyone noticed this?
2. Is this by design?
3. If so, is there a workaround?
4. If no workaround, can I plug another device.. such as a phone and will it leave the vlans accessible?
Re: UC520 > vlans unreachable when nothing's plugged in?
I actually do know a workaround to this problem. This workaround will work for UC520, UC540, SR520, and ISR platforms. The workaround is to add no autostate to the configuration for your Vlan interfaces.
You do not need to configure no autostate for your BVI interfaces, Dot11Radio interfaces, or your Integrated-Service-Engine interfaces.
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