trunk port is up but no layer 3 connectivity

Unanswered Question
Jan 24th, 2008

I've two catalyst switches connected on trunk port. The port status is UP but I do not have Layer 3 connectivity:

Cat 6500 STORSC01SF5

vlan 34

name VLAN34

interface Vlan34

ip address 49.16.20.1 255.255.255.0

interface GigabitEthernet2/22

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan 34

switchport trunk allowed vlan 34

switchport mode trunk

no ip address

STORSC01SF5#sh arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 49.16.20.1 - 0015.c73a.6000 ARPA Vlan34

Internet 49.16.20.11 0 Incomplete ARPA

***Switch - B***

vlan 34

name managment

interface Vlan34

ip address 49.16.20.11 255.255.255.0

no ip route-cache

management

interface GigabitEthernet0/15

description mgmt1

switchport access vlan 34

switchport trunk native vlan 34

switchport trunk allowed vlan 34

switchport mode trunk

switchport nonegotiate

spanning-tree cost 100

ip default-gateway 49.16.20.1

SW-A#sh arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 49.16.20.1 1 0014.5edf.fd6b ARPA Vlan34

Internet 49.16.20.11 - 001e.7a29.fd40 ARPA Vlan34

Internet 49.16.20.200 23 0014.5edf.fd6b ARPA Vlan34

The ping does not respond. Can anyone identify the issue here?

tx

I have this problem too.
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Pari Thiagasundaram Thu, 01/24/2008 - 16:26

When you say "ping" where are you pinging from ?.

Can you also post:

sh int vlan 34

sh int g0/15

sh int g2/22

Edison Ortiz Thu, 01/24/2008 - 16:58

You have a duplicate address somewhere.

The first switch has local address of 49.16.20.1 and check the MAC Address 0015.c73a.6000.

Now the switch holding the address of 49.16.20.11 sees a device holding address 49.16.20.1 but check the MAC Address 001e.7a29.fd40

HTH,

__

Edison.

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