NEED HELP!!!

[sapper1]

I have a 3550 that died and the only thing I have to replace it with is a 3500xl . I am having a hard time getting the 3500 configured the same as the 3550 so I need all the help I can get. Here is the config for the 3550. Retrieved through sh run. I'll post what I have for the 3500 shortly.


Current configuration : 6505 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname MiddleSchDwing-Sw2
!

!
no aaa new-model
clock timezone CST -6
clock summer-time CDT recurring
ip subnet-zero
no ip domain-lookup
!
!
!
!
--More--  no file verify auto
!
spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 110 priority 4096
!
vlan internal allocation policy ascending
!
interface FastEthernet0/1
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/2
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/3
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
--More--  interface FastEthernet0/4
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/5
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/6
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/7
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/8
switchport access vlan 110
switchport mode access
--More--   spanning-tree portfast
!
interface FastEthernet0/9
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/10
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/11
switchport access vlan 12
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/12
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/13
--More--   switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/14
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/15
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/16
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/17
switchport access vlan 110
switchport mode access
spanning-tree portfast
--More--  !
interface FastEthernet0/18
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/19
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/20
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/21
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/22
switchport access vlan 110
--More--   switchport mode access
spanning-tree portfast
!
interface FastEthernet0/23
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/24
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/25
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/26
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
--More--  interface FastEthernet0/27
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/28
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/29
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/30
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/31
switchport access vlan 110
switchport mode access
--More--   spanning-tree portfast
!
interface FastEthernet0/32
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/33
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/34
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/35
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/36
--More--   switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/37
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/38
switchport access vlan 101
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/39
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/40
switchport access vlan 110
switchport mode access
spanning-tree portfast
--More--  !
interface FastEthernet0/41
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/42
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/43
switchport access vlan 12
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/44
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/45
switchport access vlan 110
--More--   switchport mode access
spanning-tree portfast
!
interface FastEthernet0/46
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/47
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/48
switchport access vlan 110
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/1
description connected to MiddleSchAwing-Sw1
switchport trunk encapsulation dot1q
switchport mode dynamic desirable
!
--More--  interface GigabitEthernet0/2
description connected to MiddleSchDwing-Sw3
switchport trunk encapsulation dot1q
switchport mode dynamic desirable
!
interface Vlan1
no ip address
shutdown
!
interface Vlan3
description Management VLAN
ip address 10.254.0.47 255.255.255.0
!
interface Vlan110
no ip address
!
ip default-gateway 10.254.0.254
ip classless
ip http server
!
!
control-plane
!
--More--  banner login ^C

^C
!
line con 0
logging synchronous
login
line vty 0 4

login
line vty 5 15
login
!
end

 

[Minue]

Hi
All the commands should work accept some of the spannng-tree commands.Try again and post the pieces that are giving you problems.
Regards

 

[sapper1]

What seems to be giving me the biggest trouble is getting the switch to see my other vlans. We use a catalyst 6505 as our vlan router/VTP server. I am able to set the 3500 to a VTP client in the correct domain but when I issue the sh vlan command I am unable to see any of our existing vlans.

I am new to this so I am sure there is something I am missing. It has been a very busy week so hopefully I will get to try this again next week and I will post the configs but any suggestions in the mean would be greatly appreciated.

 

[Quadratic]

Have you made sure the password and verson are the same on both sides? For VTP, the version, password and domain have to be in agreement. To check this, do a "show vtp status" and "show vtp password" on both switches and compare.

On a side note, I think VTP in general is a bad idea for a few reasons. Even its makers don't recommend using it anymore, since its pruning features can cause some unpredictable behavior and that configuration revision number, if managed incorrectly, can purge your whole vlan database globally, instantly.

CCNP, CCDP

 

[imbadatthis]

also check your vtp revision number i think its. make sure you are in client mode on this router, and domain / passwords are exactly the same.



We must go always forward, not backward
always up, not down and always twirling twirling towards infinity.

 

[VinceWhirlwind]

Have you tried configuring your uplink port with
switchport mode on
instead of
switchport mode dynamic desirable
?

Personally, I don't understand why you would want "dynamic" trunk configuration - your switch interfaces should either "be trunks" or "not trunks", what kind of a network design would give you "maybe trunks"?

 

[vipergg]

Your vlans aren't propagating probably because the trunk itself is not working , can't propagate if trunk is down. That being said a 3500xl is so old I'm not even sure they supported dynamic trunking so what I would do is to force on both sides of the trunk with the "switchport mode trunk" command and see what happens .The 3550 did support DTP so they used that and there is nothing inherently wrong with this , we have used it for years and it keeps you from tieing 2 misconfigured trunk ports together as DTP will not form the trunk if the parameters are mismatched. Verify any vtp passwords and domain names , make sure there are no spaces in the domain name , they won't show but it matters...

 

[sapper1]

From what I can tell all is set the same and there is no VTP password.

 

[sapper1]

Here is the VTP status of of one of our current swithces.

VTP Version : 2
Configuration Revision : 34
Maximum VLANs supported locally : 1005
Number of existing VLANs : 25
VTP Operating Mode : Client
VTP Domain Name : *******
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x00 0xF2 0x33 0xE9 0x4B 0xFB 0x34 0x74

 

[sapper1]

This is the VTP status of the 3500

VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 254
Number of existing VLANs : 5
VTP Operating Mode : Client
VTP Domain Name : USD320
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0xBB 0x97 0xA7 0xED 0x98 0xBA 0x02 0x49

The configuration revisions are different but I do not know how to change it.

 

[lerdalt]

VTP should automatically update the revision version for you. Do a "show interface trunk" on both sides to make certain your trunk is up first.

 

[vipergg]

Maybe you can post the two interface configs where they are tied together . I assume on the server side the vtp domain name is also USD320 too .

 

[sapper1]

This is the result of the "sh interface trunk" command on the switch the 3500 connects to. However, the port the 3500 physically connects to does not show up.


Port Mode Encapsulation Status Native vlan
Gi0/1 desirable 802.1q trunking 1

Port Vlans allowed on trunk
Gi0/1 1-4094

Port Vlans allowed and active in management domain
Gi0/1 1,3,10,12-16,18,22-25,101,103,110,112

Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1,3,10,12-16,18,22-25,101,103,110,112

 

[sapper1]

And the "sh interface trunk" command is not valid on the 3500.

Here is the port config for the 3500

interface FastEthernet0/24
switchport trunk encapsulation dot1q


And for the 3550 it connects to

interface FastEthernet0/14
switchport trunk encapsulation dot1q
switchport mode dynamic desirable

 

[sapper1]

I have changed both ports to "switchport mode trunk".

 

[lerdalt]

What is the results on vtp now after hard setting both sides to trunk? I never like to let the switches try and figure out whether or not they are to trunk. Found it's always best to just tell them how its going to be.

 

[Quadratic]

Cisco official best-practice is to set dynamic-desirable between intended trunk ports, although personally unless I expected a lot of topology changes I'd just hard code them and disable dtp with "switchport nonegotiate". Easier on resources.

CCNP, CCDP

 

[sapper1]

sh vtp status" is the same.

results fo "sh interface trunk" on 3550

Port Mode Encapsulation Status Native vlan
Fa0/14 on 802.1q trunking 1
Gi0/1 desirable 802.1q trunking 1

Port Vlans allowed on trunk
Fa0/14 1-4094
Gi0/1 1-4094

Port Vlans allowed and active in management domain
Fa0/14 1,3,10,12-16,18,22-25,101,103,110,112
Gi0/1 1,3,10,12-16,18,22-25,101,103,110,112

Port Vlans in spanning tree forwarding state and not pruned
Fa0/14 1,3,10,12-16,18,22-25,101,103,110,112
Gi0/1 1,3,10,12-16,18,22-25,101,103,110,112

At least now the port the 3500 is connected to is showing up.

 

[lerdalt]

try this on the 3500xl (I actually found one on my shelf).

show interface fa 0/24 switchport

 

[sapper1]

Results

interface fa0/24 switchport
Name: Fa0/24
Switchport: Enabled
Administrative mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1
Pruning VLANs Enabled: 2-1001

Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none