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05/01/2009 at 10:29AM PDT, ID: 24373218
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6.6

Trunk ports, VLANs, Catalyst 3750, Layer 2 problems

Asked by theB0FH in Network Switches & Hubs, Network Design & Methodology, Network Operations, Miscellaneous Networking, Networking Hardware

Tags: Trunk, Cisco, catalyst, 3750, dot1q, vlan tagging, layer 2, LAN

Hi All
This is driving me mad at the moment and it should be very easy!

I've got 3 switches (Cisco Catalyst 3750 with ADVIPSERVICESK):
3750-HQ1 with 3750-HQ2 and 3750-3 connected to it via dot1q trunk ports.

On 3750-HQ1 I have an interface called VLAN99 with IP address 10.0.0.241
On 3750-HQ2 I have an interface called VLAN99 with IP address 10.0.0.242
On 3750-3 I have an interface called VLAN99 with IP address 10.0.0.243

I can ping 10.0.0.242 from 3750-HQ1 and vice versa, but we cannot get any pings from/to 3750-3 on VLAN99.

Please have a look at the three config files attached and see if there's anything blindingly obvious that I'm obviously too blind to see?

I've been banging my head against this all day!

Thanks!
Attachments:
 
CAT-3750-3.txt (5 KB) (File Type Details) 
Config file for CAT 3750 for 3750-3
 
 
CAT-3750-HQ2.txt (3 KB) (File Type Details) 
Config file for CAT 3750 for 3750-HQ2
 
 
CAT-3750-HQ1.txt (15 KB) (File Type Details) 
Config file for CAT 3750 for 3750-HQ1
 
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About this solution

Zones: Network Switches & Hubs, Network Design & Methodology, Network Operations, Miscellaneous Networking, Networking Hardware
Tags: Trunk, Cisco, catalyst, 3750, dot1q, vlan tagging, layer 2, LAN
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Solution Provided By: giltjr
Participating Experts: 4
Solution Grade: B
 
 
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