Hi - im missing something basic here
Im telneted to a nortel switch that had a cross ove rconnected to another nortel. I replaced this other/2nd nortel with a cisco 2950. the uplink between the 2 was originaly just on 1 vlan - and all was well. Problem was I wanted to telnet to the new cisco and couldnt as my pc was on different vlan that the new cisco. so i placed the uplink between the two onto BOTH VLANs - and yes i could then telnet to the new cisco. problem was that some remote offices whos links are on the nortel started to get some latency/dropped packets connections.
I changed the uplink between the two back to just the one original VLAN it was on. - yet still some dropped packets/remote office issues. - i just noticed though that even though the vlan was changed - the default vlan ID of the uplink port was still set at the new VLAN - so it had a mismatch between the VLAN it was on and its default VLAN ID? - I dont know hwy/how? what this means ? - But i set the VLAN ID to match the VLAN its on - and now it seems fixed i think - pings to remote offices are now consistent 1ms - i guess im asking about the VLAN ID mismatch - so what VLAN was the port on the ID? or the VLAN? hope i havent been to confusing - why when i change the VLAN does the default VLAN ID not change as well?