need help setting up vlan's on my catalyst 5500

[madess]

I am attempting to setup a virtual lan on my 5500. It has a router switch interface installed. When ever I add a port to the vlan it drops off the network and I can no longer comminicate with that port.

Thanks
Matt

 

[l1carter]

Matt,

I need more details. Is the port going to disabled? or Inactive? Is the 5500 a vtp server or client?

What devices are you connecting to the switch (hubs) (routers) or (end stations)?

thanks,

Lee

 

[IPKONFIG]

Show us your config <------

 

[madess]

It is neither a vtp server or client - I have to assume this a prerequisite. There are routers, switches and endstations connected to the switch. The ports in particular I am attempting to put on the vlan are for a Tandem nonstop server.

 

[IPKONFIG]

Could you please post your config, that way we can take a look at it an make some suggestions.

 

[l1carter]

I am going with IPKONFIG on this one, you will need to post your configs. What you are aking is general and I am not real sure of what your problem is.

As a general rule you need to defind a vtp domand and set the mode to server (usually default after you set the vtp domain). One in server mode you can create vlans on the switch.

 

[madess]

Here is the config, I will setup the vtp domain and server today.

begin
!
# ***** NON-DEFAULT CONFIGURATION *****
!
!
#time: Sat Nov 29 2003, 10:16:25
!
#version 5.5(10)
!
set password
set enablepass
set prompt HQ-5500#
set logout 60
!
#test
set test diaglevel complete
!
#system
set system name Elder-HQ
set system location Dayton
!
#frame distribution method
set port channel all distribution mac both
!
#snmp
set snmp rmon enable
!
#vtp
set vtp domain eb
set vtp mode transparent
set vlan 1 name default type ethernet mtu 1500 said 100001 state active
set vlan 2 name tandem type ethernet mtu 1500 said 100002 state active
set vlan 1002 name fddi-default type fddi mtu 1500 said 101002 state active
set vlan 1004 name fddinet-default type fddinet mtu 1500 said 101004 state active stp ieee
set vlan 1005 name trnet-default type trbrf mtu 1500 said 101005 state active stp ibm
set vlan 1003 name token-ring-default type trcrf mtu 1500 said 101003 state active mode srb aremaxhop 7 stemaxhop 7 backupcrf off
!
#ip
set interface sc0 1 10.1.225.100/255.255.0.0 10.1.255.255

set arp agingtime 10
set ip route 0.0.0.0/0.0.0.0 10.1.225.1
set ip alias default 0.0.0.0
set ip alias defau 0.0.0.0
!
#spantree
set spantree disable all
#vlan 1003
set spantree fwddelay 15 1003
set spantree maxage 20 1003
#vlan 1005
set spantree fwddelay 15 1005
set spantree maxage 20 1005
!
#cgmp
set cgmp enable
!
#set boot command
set boot config-register 0x2
set boot system flash bootflash:cat5000-sup3.5-5-10.bin
!
#igmp
set igmp disable
!
#mls
set mls nde disable
!
# default port status is enable
!
!
#module 1 : 0-port Supervisor III
!
#module 2 : 0-port Supervisor III
!
#module 3 empty
!
#module 4 : 1-port Route Switch
set spantree portcost 4/1 100
!
#module 5 : 24-port 10/100BaseTX Ethernet
set port name 5/12 tandem
!
#module 6 : 24-port 10/100BaseTX Ethernet
set spantree portvlancost 6/5 cost 18
!
#module 7 : 24-port 10/100BaseTX Ethernet
!
#module 8 : 24-port 10/100BaseTX Ethernet
set trunk 8/1 on isl 1-1005
set spantree portcost 8/1 5
set spantree portvlancost 8/1 cost 4
!
#module 9 : 24-port 10/100BaseTX Ethernet
!
#module 10 : 24-port 10/100BaseTX Ethernet
set vlan 1 10/20
set port speed 10/20 100
set port duplex 10/20 full
!
#module 11 : 24-port 10/100BaseTX Ethernet
set trunk 11/12 desirable isl 1-1005
!
#module 12 empty
!
#module 13 empty
!
#switch port analyzer
set span 1 10/20 both inpkts disable learning enable multicast enable create
end

 

[IPKONFIG]

Yep, your problem is your VTP mode is transparent. Try using this command:

set vtp mode server <enter>

Then try setting up your vlans

set vlan 3 name (Test) <-----don't know if you want to add a vlan or not.

Then assign your ports to which ever vlan you created, or to existing vlans. You should be good to go.

 

[madess]

I set it to server mode and it still does not seem to work.
I have a vlan 2 created and if I add anthing too it - it stops responding to pings.

 

[IPKONFIG]

I'm assuming you have a Route Switch Module in your Catalyst to route traffic right? And that you've configured it with Vlan 2 as a routed interface?

 

[madess]

There is a router module in the Catalyst 5500 that I am assuming needs to be a part of the vlan ... If so how do I add it.

 

[madess]

Disregard that last post, that is unlcear. Yes it does have a router switch module. Though I have not configured it with Vlan 2 as the routed interface - how do I do that.

 

[IPKONFIG]

Ah ha! Try this:

session over to the router and try out these commands:

config t
interface vlan 2
ip address x.x.x.x x.x.x.x
no shutdown
end


The IP address should be the gateway of the machines in vlan 2.

 

[madess]

when I set up the vlan ip address it gives me this message

10.1.0.0 overlaps with Vlan1

any thoughts.

 

[IPKONFIG]

Yeah, look at this. I took it from your configuration that you posted above;

#ip
set interface sc0 1 10.1.225.100/255.255.0.0 10.1.255.255


The (1) after the &quot;sc0&quot; indicates the vlan that your address space is on. Your trying to assign an address space to vlan 2 that's already assigned to vlan 1. Why don't you use 10.2.0.0/16 as your network for vlan 2.

 

[madess]

never mind, dumb question, I figured it out, and it works, thank you so much for your help.

Matt

 

[madess]

Yep, that is what I did before I recieved you post. Thanks again.

 

[IPKONFIG]

No problem. Just remember, when you create new vlans, that you have to build a routed interface if you want them to talk to other vlans.