Switch – How to reset password to a Nortel 8310

Assuming you will use VL20 as your guest network, do the following:

1. Every switch that has guest devices on it should have VL 20 on it.

2. Configure the security profile on the WAG102 to use VL 20 for the guest SSID (check "enable 802.1 VLAN"). For the management profile, uncheck the Enable 802.1q VLAN box.

3. Make the AP ports on the switches VLAN 20 tagged and VL 1 untagged.

4. Make the port for the BT router VL 20 untagged.

5. If you have switch to switch connections, those ports should be set to VLAN 1 untagged and VL 20 tagged.

6. Everything else (your internal devices, management interface, etc) should be on VL 1 untagged ports.

You may have some options and without knowing more information, we cannot tell you which way is best.

1. I agree with Ricky, getting on management VLAN and pinging the broadcast address, looking at your computers ARP table and see which MAC is a Zyxel MAC.
2. You could run an application like NMAP, maybe even LAN Sweeper, that can scan your management VLAN and give you information about the hosts it can detect.
3. If the switch has a trunk interface setup, plug your laptop into it and open wire shark, you'll see what VLANs, IPs and MACs are out there
4. If you have DHCP on the management VLAN or any VLANs, take a look at leases and reservations. If nothing there, look at reserved space.

I would look at DHCP first. If I didn't see a lease or reservation (which I wouldn't expect to see), I would then use the scan tools for the reserved range of IPs in the DHCP scope. The fewer hosts you scan the faster the scan. I would also scan with an ssh username/password (default you said) and that makes me think that the snmp community is also set to "public". Which you could also scan for. I'd also scan for port 443 and 80, as it appears the management Web interface operates on these ports but I'd double check the documentation first and scan those ports.

Happy hunting!