Problem with VLANs

Hardware Specs for Cisco Routers and Switches. Cabling termination and cabling types. Performance Fans and flash Memory

Re:Problem with VLANs

Post by Guest »

Hi Tigin Its great it solved ur problem
Hello I'm new here
Posts: 2
Joined: Sat Apr 30, 2011 7:21 am

Re: Problem with VLANs

Post by agagagugu »

I can not see any diagram or configuration
Hello I'm new here
Posts: 1
Joined: Mon Mar 26, 2012 1:54 am
Location: Chicago

Re: Problem with VLANs

Post by albertodegama »

Hi All,

I've got a weird little problem. I've got about 50 switches (2950's,
3500's, 4006's) and about 40 different vlans which make up my network.
We have close to 1100 PC's on the network, we have segregated vlans
based on geographic location within the building.

The problem we are having is in some cases when we move PC's or replace
PC's, the PC is unable to pick up an ipaddress on a specific VLAN (ie a
PC is on VLAN 37 is moved to a new location and the port is configured
to VLAN 37 but it is unable to obtain an IP address or a PC is replaced
with a brand new one but it still is not able to obtain an IP)

The problem isn't DHCP related, as these devices are unable to
communicate with anything even when configured with a static IP.

Now the strange part, if I change the vlan that the port is configured
to use, the device will start working ie going from vlan37 to vlan446.
Also if after a couple of days/weeks I set the port back to the orignal
vlan it will work again..

This problem has only reared its ugly head in the last 6 months. It is
becoming more frequent. Can anyone suggest where I start looking to
try and resolve this problem?

Thanks in advance
Post Reply