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From: bobneworleans on 17 Jun 2010 13:19
A host is connected to 3550 f0/12 assigned to VLAN 106. Int VLAN 106
is 10.1.106.27, which the host can ping.
A trunk is configured on G0/2 connecting it to 4507 int G2/1. Int
VLAN 106 is 10.1.106.1 on the 4507. The host cannot ping this
address.

I suspect some problem in my trunks and included below some relevant
info. Do you see what the problem is? Let me know if you need any
additional info and I'll provide it.

THANKS!
Bob


3550 Partial config

vlan 106
name Server_VLAN

interface FastEthernet0/12
switchport access vlan 106
switchport mode dynamic desirable

interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,102,106
switchport mode trunk

interface Vlan1
ip address 10.1.1.27 255.255.255.0

interface Vlan106
ip address 10.1.106.27 255.255.255.0


Laurel-MDF-Sw27#sho vlan

VLAN Name Status Ports
---- -------------------------------- ---------
-------------------------------
1 default active
102 2ndFl_VLAN active Fa0/1, Fa0/2, Fa0/3,
Fa0/4, Fa0/5, Fa0/6, Fa0/7, Fa0/8, Fa0/9, Fa0/10
Fa0/11, Fa0/13,
Fa0/14, Fa0/15, Fa0/16, Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22,
Fa0/23, Fa0/24
106 Server_VLAN active Fa0/12


Laurel-MDF-Sw27#sho int f0/12 sw
Name: Fa0/12
Switchport: Enabled
Administrative Mode: dynamic desirable
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 106 (Server_VLAN)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL


Laurel-MDF-Sw27#sho int g0/2 sw
Name: Gi0/2
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,102,106


Laurel-MDF-Sw27#sho int tr

Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1
Gi0/2 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi0/1 1,102,106
Gi0/2 1,102,106

Port Vlans allowed and active in management domain
Gi0/1 1,102,106
Gi0/2 1,102,106

Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1,102,106
Gi0/2 1,102,106




4507 partial config

interface GigabitEthernet1/1
description to MDF stack, switch 21
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,102,105,106
switchport mode trunk
storm-control broadcast level 50.00 40.00
storm-control action shutdown
spanning-tree guard root

interface GigabitEthernet2/1
description to MDF stack, switch 27
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,102,105,106
switchport mode trunk
storm-control broadcast level 50.00 40.00
storm-control action shutdown
spanning-tree guard root

interface Vlan1
description Management_Vlan
ip address 10.1.1.1 255.255.255.0 secondary
ip address 10.1.99.99 255.255.255.0
no ip redirects

interface Vlan106
ip address 10.1.106.1 255.255.255.0


LAUREL-MDF-4507#sho int trunk

Port Mode Encapsulation Status Native vlan
Gi1/1 on 802.1q trunking 1
Gi2/1 on 802.1q trunking 1
Gi3/3 on 802.1q trunking 1
Gi3/4 on 802.1q trunking 1
Gi3/5 on 802.1q trunking 1
Gi4/1 on 802.1q trunking 1
Gi4/3 on 802.1q trunking 1
Gi4/4 on 802.1q trunking 1
Gi4/5 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi1/1 1,102,105-106
Gi2/1 1,102,105-106
Gi3/3 1,103,105
Gi3/4 1,104-105
Gi3/5 1,101,105
Gi4/1 1-4094
Gi4/3 1,103,105
Gi4/4 1,104-105
Gi4/5 1,101,105

Port Vlans allowed and active in management domain
Gi1/1 1,102,105-106
Gi2/1 1,102,105-106
Gi3/3 1,103,105
Gi3/4 1,104-105
Gi3/5 1,101,105
Gi4/1 1,101-106
Gi4/3 1,103,105
Gi4/4 1,104-105
Gi4/5 1,101,105

Port Vlans in spanning tree forwarding state and not pruned
Gi1/1 1,102,105-106
Gi2/1 1,105
Gi3/3 1,105
Gi3/4 1,104-105
Gi3/5 1,105
Gi4/1 1,101-106
Gi4/3 1,105
Gi4/4 1
Gi4/5 1,105


LAUREL-MDF-4507#sho vlan

VLAN Name Status Ports
---- -------------------------------- ---------
-------------------------------
1 default active Gi1/2, Gi2/2, Gi3/2,
Gi3/6, Gi4/2, Gi4/6, Fa5/1, Fa5/2, Fa5/3, Fa5/4
Fa5/5, Fa5/6, Fa5/7,
Fa5/8, Fa5/9, Fa5/10, Fa5/11, Fa5/12, Fa5/13
Fa5/14, Fa5/15,
Fa5/16, Fa5/17, Fa5/18, Fa5/19, Fa5/20, Fa5/21, Fa5/22
Fa5/23, Fa5/24,
Fa5/25, Fa5/26, Fa5/27, Fa5/28, Fa5/29, Fa5/30, Fa5/31
Fa5/32, Fa5/33,
Fa5/34, Fa5/35, Fa5/36, Fa5/37, Fa5/38, Fa5/39, Fa5/40
Fa5/41, Fa5/42,
Fa5/43, Fa5/44, Fa5/45, Fa5/46, Fa5/47, Fa5/48
101 1st_Floor_VLAN active
102 2ndFl_VLAN active
103 3rdFl_VLAN active
104 Annex_VLAN active
105 Wireless_VLAN active
106 Server_VLAN active


LAUREL-MDF-4507#sho int g1/1 sw
Name: Gi1/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,102,105,106


LAUREL-MDF-4507#sho int g2/1 sw
Name: Gi2/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,102,105,106
From: bobneworleans on 17 Jun 2010 14:25
Never mind. I got it working by unplugging one of the two links from
the 4507 to the group of switches. Now I can troubleshoot where the
problem is.
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