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Cisco 2950 switch VLAN problem

 
 
Slava Slava is offline
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Join Date: May 2009
Posts: 1
 
      05-19-2009
Hello everybody,
Here little problem with configuration of 2950
I created two VLAN's 10 and 20, VLAN 1 default get IP from DHCP server on router 851w.
When i trying set vlan 10 or 20 no shutdown command it some reason allow only one vlan in up state and another two to administratively down ??????
I tried set static IP too.
Vlan1 unassigned YES NVRAM up up

Vlan10 unassigned YES NVRAM administratively down down

Vlan20 unassigned YES NVRAM administratively down down

FastEthernet0/1 unassigned YES unset down down

FastEthernet0/2 unassigned YES unset down down

FastEthernet0/3 unassigned YES unset down down

FastEthernet0/4 unassigned YES unset up up

FastEthernet0/5 unassigned YES unset down down

FastEthernet0/6 unassigned YES unset down down

FastEthernet0/7 unassigned YES unset down down

FastEthernet0/8 unassigned YES unset up up

--More--


--------------------------------------------------------------------------

Switch#config t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#int vlan 10
Switch(config-if)#no shutdown
Switch(config-if)#
02:23:55: %LINK-3-UPDOWN: Interface Vlan10, changed state to up
Switch(config-if)#02:23:55: %LINK-5-CHANGED: Interface Vlan1, changed state to administratively down 02:23:56: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
Switch(config-if)#
Thank you in advance!!!!!!!
 
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d_mito d_mito is offline
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Join Date: Jul 2010
Posts: 1
 
      07-14-2010
Hello!

Only one VLAN can be in UP state on this model of Catalyst.
It is just not supported to work with more VLANS at the same time.
You will find them working on Catalyst 3550 for example.

Regards.
 
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Akilla21 Akilla21 is offline
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Join Date: Nov 2010
Location: Wiesbaden, Germany
Posts: 14
 
      11-04-2010
Another option would be for you to see if you router can do sub-interfaces. In which you would need that anyway to pass more than one vlan across the trunk.

If you can create sub-interfaces on the router, this will allow you to have the L3 int for the vlans you want. On the switch go into the vlan database and create the vlans there.

Make the one your interfaces be trunk and allow all vlans to pass. On the interfaces they will simply be client vlan connections.

This will allow you segregate your client/user connections. Remember Router on a stick method.

I had an attachement for this lesson, but the system doesn't allow a file bigger than 20K. Goto https:learningnetwork.cisco.com/thread/2401 and find Shane Killians blog, you will see a pdf that gives details on how to create the router on a stick method.

They are using GNS3, but this can also be done in packet tracer and works that best there. If your router setup is production, I would recommend labing it up first.
 

Last edited by Akilla21; 11-04-2010 at 07:08 AM..
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