03-09-2007 03:22 AM - edited 03-05-2019 02:48 PM
I have a habit of installing a new switch into my network and Keep breaking my SC0 setup. Here is what I mean. I configure and install a switch. I set up trunking on the uplink and I can't get to SC0 with it set to VLAN 1. I have to set it to the VLAN that the ports are set to. I know it should work set to Vlan 1 so, How do I keep breaking it???
03-09-2007 05:06 AM
Hi,
a VLAN is meant to separate traffic, so only "ports" associated with the same VLAN can communicate. If your SC0 "port" is in a different VLAN than your PC then no communication is possible without the help of a router.
Assign your PC access port to VLAN 1 (infact it is in VLAN 1 per factory default), make sure the (sub)network and mask are the same and you should get connectivity.
If you are not attached to VLAN 1 you should NOT get connectivity. You can look at it as a security feature, user ports should not even be allowed to access Switch login.
So it is not a bug, it is a feature!
Regards, Martin
03-09-2007 08:41 AM
Thanks Martin, I guess I didn't explain my problem well. I have multiple switches in which I trunk the uplink. SC0 on these switches is set to VLAN 1. Here is where I messed Up. When I telnet into the switch from a remote location or try and ping the switch IP address, I get no response. If I set SC0 to the Vlan that the ports are configured at, I am able to get a response from the switch. My understanding is that I should be able to get to the switch with SC0 set to Vlan 1 due to trunking. I am guessing I am doing something wrong or out of sequence when I set up the VTP Domain Or the Trunking Link....
03-09-2007 09:19 AM
Sounds like you do not have trunking setup on the uplink and it is an access port . The uplink would have to be a trunk if you want a separate management domain . Also vlan 1 would have to have a definition on your layer 3 device that is doing the routing . Also your default gateway would have to point to that vlan 1 router address , "set ip route default " Hi Joe .
03-09-2007 10:19 AM
Hi Glenn my friend!
Here is the Switch side:
sh trunk
* - indicates vtp domain mismatch
# - indicates dot1q-all-tagged enabled on the port
Port Mode Encapsulation Status Native vlan
-------- ----------- ------------- ------------ -----------
3/33 on dot1q trunking 1
Here is the Router Side:
Sh trunk
Port Mode Encapsulation Status
6/2 on dot1q trunking 1
6/2 is the router port to the switch and here is the VLans:
Port Vlans allowed and active in management domain
-------- ---------------------------------------------------------------------
3/33 1,7,426,428,435-437,445,469,484,530,545,602,900-901,979,989,991-992,997-999
Here is my route command:(I have put xxx where my gateway is security reasons you know..)
set ip route 0.0.0.0/0.0.0.0
xxx.xxx.xxx.254
I hope this information helps...
03-09-2007 10:52 AM
Glen, Thanks for making me think...(What a Dummy I am) I found my problem and I am too embarrassed to publish it..
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