Replaced Switch, Can No Longer Access Trunked Computers

[AFCITDept]

Hi!

  We have just replaced a Cisco 2960S iOS version 12.2 switch with a 2960-X iOS version 15.0 48-port switch. Apparently there are some differences, because we configured the new switch just like the old one and are having a problem. This switch has a port that trunks to another small office building with a few computers and now they are no longer accessible on our network. We have a Shoretel VOIP phone system that appears to be working over there however, and the computers are plugged directly into the Shoretel Phones. The trunk port is configured as such (vlan 10 is the computer office vlan, vlan 1088 is the management vlan, and vlan 21 is our VOIP vlan. ) Can anyone tell me if there is there something obviously missing or misconfigured? Thank you for the help!

interface GigabitEthernet1/0/6

 description MANAGE

 switchport access vlan 10

 switchport trunk native vlan 1088

 switchport mode trunk

 switchport voice vlan 21

 mls qos trust dscp

 spanning-tree portfast

I can access the switch in the small office building, but can't ping the computers. If I do a traceroute from that switch it hits the gateway and nothing else. If I do a traceroute from another computer in the network it doesn't even have a first stop. Is there any other information that would be helpful in troubleshooting this?

[johnd2310]

Hi,

What switch is the 2960-X connected to and how is that switch configured?

[AFCITDept]

Thanks for the help. That switch is connected to an Aruba s-1500 12 port switch in the small office. Nothing has changed on that end, but it comes into a trunk port on native vlan 1088.  Here are the results of those commands:

PioneerSt-2960-X#sh vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi1/0/47, Gi1/0/48, Gi1/0/49
                                                Gi1/0/50, Gi1/0/51
2    workstations                     active
10   realoffice                       active    Gi1/0/2, Gi1/0/3, Gi1/0/5
                                                Gi1/0/7, Gi1/0/8, Gi1/0/9
                                                Gi1/0/10, Gi1/0/11, Gi1/0/12
                                                Gi1/0/13, Gi1/0/14, Gi1/0/15
                                                Gi1/0/16, Gi1/0/17, Gi1/0/18
                                                Gi1/0/19, Gi1/0/20, Gi1/0/21
                                                Gi1/0/22, Gi1/0/23, Gi1/0/24
                                                Gi1/0/25, Gi1/0/26, Gi1/0/27
                                                Gi1/0/28, Gi1/0/29, Gi1/0/30
                                                Gi1/0/31, Gi1/0/32, Gi1/0/33
                                                Gi1/0/34, Gi1/0/35, Gi1/0/36
                                                Gi1/0/37, Gi1/0/38, Gi1/0/39
                                                Gi1/0/40, Gi1/0/41, Gi1/0/42
                                                Gi1/0/43, Gi1/0/44, Gi1/0/45
                                                Gi1/0/46
20   ashphones                        active
21   pioneervoice                     active    Gi1/0/2, Gi1/0/3, Gi1/0/4

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
                                                Gi1/0/5, Gi1/0/7, Gi1/0/8
                                                Gi1/0/9, Gi1/0/10, Gi1/0/11
                                                Gi1/0/12, Gi1/0/13, Gi1/0/14
                                                Gi1/0/15, Gi1/0/16, Gi1/0/17
                                                Gi1/0/18, Gi1/0/19, Gi1/0/20
                                                Gi1/0/21, Gi1/0/22, Gi1/0/23
                                                Gi1/0/24, Gi1/0/25, Gi1/0/26
                                                Gi1/0/27, Gi1/0/28, Gi1/0/29
                                                Gi1/0/30, Gi1/0/31, Gi1/0/32
                                                Gi1/0/33, Gi1/0/34, Gi1/0/35
                                                Gi1/0/36, Gi1/0/37, Gi1/0/38
                                                Gi1/0/39, Gi1/0/40, Gi1/0/41
                                                Gi1/0/42, Gi1/0/43, Gi1/0/44
                                                Gi1/0/45, Gi1/0/46
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup
1088 manage                           active
PioneerSt-2960-X#sh vtp status
VTP Version capable             : 1 to 3
VTP version running             : 1
VTP Domain Name                 :
VTP Pruning Mode                : Disabled
VTP Traps Generation            : Disabled
Device ID                       : 1cde.a77b.ba00
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00

Feature VLAN:
--------------
VTP Operating Mode                : Transparent
Maximum VLANs supported locally   : 1005
Number of existing VLANs          : 9
Configuration Revision            : 0
MD5 digest                        : 0xD4 0x0F 0x1D 0x1C 0x91 0x2D 0x02 0xD9
                                    0x27 0xBD 0xAA 0xBC 0xD4 0xA7 0x49 0x70
PioneerSt-2960-X#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Gi1/0/1     on               802.1q         trunking      1088
Gi1/0/6     on               802.1q         trunking      1088
Gi1/0/52    on               802.1q         trunking      1088

Port        Vlans allowed on trunk
Gi1/0/1     1-4094
Gi1/0/6     1-4094
Gi1/0/52    1-4094

Port        Vlans allowed and active in management domain
Gi1/0/1     1-2,10,20-21,1088
Gi1/0/6     1-2,10,20-21,1088
Gi1/0/52    1-2,10,20-21,1088

Port        Vlans in spanning tree forwarding state and not pruned
Gi1/0/1     1-2,10,20-21,1088
Gi1/0/6     1-2,10,20-21,1088
Gi1/0/52    1-2,10,20-21,1088
PioneerSt-2960-X#

[AFCITDept]

Aha, and more mystery today. I got to work early so I could try to troubleshoot those computers in the office to make sure they could do their work today. When I went in there, those computers are accessing our network, the internet and the phones are working fine. I can ping (or remote desktop) out to any computer from inside that office, but I just can't ping (or remote desktop) into computers inside that office from the outside. Strange, but perhaps that narrows down the troubleshooting?

[paul driver]

Hello

The interface config you posted, Where is this connecting too

Also can you check to make sure the vtp databse is as it should be on tis new switch, does it have the correct vlans propagated?

sh vlan brief
sh vtp status
sh int trunk

res
Paul