The stranger thing that happend with switches 2950 and 3550

[santos.alberto]

Hi there,

I'd like to tell you something stranger that happened with me when I decided to active MSFC on my 6509 CORE.

before I did that, I had a network 10.236.0.0/20, and my 6509 operated just like another switch layer 2 and we had a 2600 as Gateway and WAN border.

Now we have 6509 as a New Gateway of the network, but when my MSFC power up, some hosts behind of my 10.236.0.0/20 was unable to ping/telnet and so on from 10.236.0.135, but I could do from 10.236.0.134 and .133, and no problem with routing table, we cleared arp table from boths parties, mac-address-table and it didnt work, the stranger thing happenend when we remove and re-install the default gateways on this hosts/swicthes, after that we are able to ping form 10.236.0.135 or booted thais equipaments. the old IP gateway still the same but now on 6509.

[rburden]

So you have one huge layer 2 network and are not doing any VLANning on it? You would need to after you setup the MSFC to route within the 6509. What kind of hosts are these? Windows tends to be kinda quirky when you switch gateway addresses on it. It is possible that it was hanging onto something before you removed the gateway and reset it. Give me some more details on how this is set up.