2950 - unable to ping 2

[rossco6]

I have recently been upgrading parts of our LAN and have hit a bit of a snag.

I have a 3550-12G switch with a Gigabit LX gbic with mode conditioning patch leads. It's working fine. The 2950 has a Gigabit LX gbic too with mode conditioning patch leads. I can connect to the 2950 thru the console port and have ran the initial setup and allocated it an IP address on our LAN, subnet mask and everything.I can ping anything on our LAN I like from the switch, dns look-ups work. The problem I'm having is that I can't ping the 2950 at all from the network. I have added it to a cluster and can monitor it through the web no problem via the cluster command switch, just can't access it via telnet, ping or web directly.

 

[Andyleates]

CHeck the VLAN1 interface is not still Admin down.

Andy Leates MCSE CCNA MCP+I

 

[rossco6]

As far as I can see, it says the VLAN is active.

What is the best method of verifying that?

 

[Andyleates]

sh int vlan1



Andy Leates MCSE CCNA MCP+I

 

[rossco6]

VLAN1 is up, line protocol is up.

it displays the correct ip address etc too.

 

[rossco6]

Have just noticed that the vlan1 interface is down on the 3550.

How do I change it's state to up?

Thanks

Ross

 

[Cluebird]

Switch(config)#int vlan 1
Switch(config-vlan)#no shut

Be careful, though. Are you using Vlan 1 for management or have you created another Vlan for management? If you're managing with another vlan and you bring vlan 1 up, you will wipe out the other management vlan.

 

[rossco6]

OK, I think the haze is beginning to clear!

On the initial setup of the 3550 is set ethernet port 12 as the management port and gave it an ip address. port 12 is connected to another switch via a cross over cable. The gbic is in port9. If I try to give it a different ip address it says it conflicts with the address of port 12.

Do I need to create another VLAN?

Any help is greatly appreciated!

Thanks

Ross

 

[Cluebird]

Please clarify a bit. Are you running EMI on the 3550? If so, did you make port 12 (interface 12) a layer three interface using the "no switchport" command?

Can you post the 3550 config?

 

[rossco6]

Running-config:

spanning-tree mode pvst
spanning-tree extend system-id
!
!
!
interface GigabitEthernet0/1
switchport mode dynamic desirable
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
!
interface GigabitEthernet0/3
switchport mode dynamic desirable
!
interface GigabitEthernet0/4
switchport mode dynamic desirable
!
interface GigabitEthernet0/5
switchport mode dynamic desirable
!
interface GigabitEthernet0/6
switchport mode dynamic desirable
!
interface GigabitEthernet0/7
switchport mode dynamic desirable
!
interface GigabitEthernet0/8
switchport mode dynamic desirable
!
interface GigabitEthernet0/9
description PM4 WetEnd
no switchport
no ip address
!
interface GigabitEthernet0/10
switchport mode dynamic desirable
!
interface GigabitEthernet0/11
switchport mode dynamic desirable
!
interface GigabitEthernet0/12
description Link To Switch Y
no switchport
ip address 172.25.60.52 255.255.254.0
!
interface Vlan1
no ip address
!
ip classless
ip http server
!
ip access-list extended CMP-NAT-ACL
dynamic Cluster-HSRP deny ip any any
dynamic Cluster-NAT permit ip any any

Can someone please explain how this switch is supposed to be setup?

In short, interface 12 has an IP address and is connected via cross over cat5 to another switch on the lan, just to get it onto out network. Interface 9 is connected via fibre to another switch.

How are the vlans supposed to be set? Do I need to create more? Does each interface need an IP address?

I can get interface vlan1 up, but not allocate it an IP Address.

Am a bit new to this managed switch stuff!

Thanks

 

[Andyleates]

You can set the ip address on vlan1 by

conf t
int vlan1
ip address 172.25.x.x 255.255.254.0
ctrl z

you might also need to set your default gateway

conf t
ip default-gateway 172.25.x.x
ctrl z

Remember to copy run star after any changes!

Andy

Andy Leates MCSE CCNA MCP+I

 

[rossco6]

OK, am getting there.

I know have an IP address for the VLAN1 interface. When I do a sho int vlan1, it says that interface is up but line protocol is down.

The conf is as above except that vlan1 now has the ip address which interface 12 had.

There are connection lights on both interface 9 and 12.

 

[bebop1065]

You had the same problem I had. You will have to assign a port to VLAN1 in order for an interface to come up.

conf t
int GigabitEthernet0/#
switchport access vlan 1
switchport mode access
no ip address

or something similar.

http://soulphoto.net

CCNA student

 

[rossco6]

Got it going now!!!

Thanks one and all for the assistance!

Ross