Vlan interface not forwarding traffic

[fenstrat]

I have a few switches which cannot communicate over vlan 110(management vlan) the configuration is exactly the same as other switches which work fine.

interface vlan 110 is not shutdown

If I run show spanning-tree detail all other vlans are forwarding but 110 is not. The interface is up. Any ideas as to how to make it forward?

Thanks

 

[fenstrat]

Here is the setup

interface Vlan110
ip address 10.10.2.60 255.255.255.0
no ip route-cache
!
ip default-gateway 10.10.2.7
ip http server

#show interface vlan 110
Vlan110 is up, line protocol is up
Hardware is CPU Interface, address is 0011.218e.5700 (bia 0011.218e.5700)
Internet address is 10.10.2.60/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 14 packets/sec
5 minute output rate 24000 bits/sec, 44 packets/sec
4026959 packets input, 588007178 bytes, 0 no buffer
Received 103 broadcasts (0 IP multicast)
0 runts, 0 giants, 935 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 16 ignored
17119739 packets output, 1146236506 bytes, 0 underruns
0 output errors, 2 interface resets
0 output buffer failures, 0 output buffers swapped out

show spanning-tree detail

Port 26 (FastEthernet0/26) of VLAN0100 is forwarding
Port path cost 19, Port priority 128, Port Identifier 128.26.
Designated root has priority 32768, address 0008.e3ce.4801
Designated bridge has priority 32868, address 0011.218e.5700
Designated port id is 128.26, designated path cost 57
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 196398, received 4

Port 26 (FastEthernet0/26) of VLAN0200 is forwarding
Port path cost 19, Port priority 128, Port Identifier 128.26.
Designated root has priority 32768, address 0008.e3ce.4803
Designated bridge has priority 32968, address 0011.218e.5700
Designated port id is 128.26, designated path cost 57
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
Link type is point-to-point by default
BPDU: sent 202402, received 113


Skips right over vlan 110

 

[baddos]

Post a "show vlan".

I'm thinking that maybe you don't have any ports up that are assigned to that vlan.

 

[vipergg]

Do a show vlan . Does it show up as active ? If not then your vlan was never created at layer 2 . conf t , vlan XXX, enter . You are looking at the layer 3 virtual interface when you do a show interface vlan 110 . If these are really old switches then you will have to go into the vlan database to create them . At the prompt type vlan database , enter . type vlan 110 .

 

[vipergg]

Also a second thought , seeing you have multiple vlans on these switches i assume you are trunking down to them , if so make sure the vlan is being allowed on the trunk .

 

[fenstrat]

Thanks,

I just needed to type vlan 110
This was for a cisco 2950 c

I am having the same problem now on the catalyste 5505 but it is a little different. How do I set the virtual vlan interface on the 5505?

I see this command in the config. I need the vlan 110 interface to have this ip address, this is only for management.
set interface sc0 1 10.10.2.5 255.255.255.0 10.10.2.255

This is how I have it set on the 2950's
interface vlan 110
ip address 10.10.2.60 255.255.255.0
ip default-gateway 10.10.2.7

any ideas on where to start?
Thanks

 

[baddos]

A 2950 is not a layer3 switch, so don't type in interface vlan xxx unless it's your management vlan.

 

[vipergg]

On the 5505 type the following set interface sc0 110 10.10.2.5 255.255.255.0 10.10.2.255 . Also make sure your default gateway is correct .

 

[vipergg]

Just a word of caution on the 5505 , if you set the int sc0
to vlan 110 and your uplink is not trunked with vlan 110 coming down you can isolate the switch . Your uplink either needs to be set to vlan 110 or trunked with the trunk allowing vlan 110 .