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New Member

WS-G5483 is not able to trunk between switches

I have a WS-C3524-XL with a WS-G5483 in Gi0/1 and it is connected to WS-C3750-24P via 10/100/1000BaseTX SFP and I am not able get a Dot1q trunk up between the switches. The WS-C3750-24P shows connected but the WS-C3524-XL show not connected.

7 REPLIES
New Member

Re: WS-G5483 is not able to trunk between switches

Hi,

can you give us some detail about trunk configuration(sh int trunk, sh in gi0/1)

BR. Amdil

New Member

Re: WS-G5483 is not able to trunk between switches

The 3750 is configured with the following:

interface GigabitEthernet1/0/2

description CAT3524 Gi0/1

switchport trunk encapsulation dot1q

switchport mode trunk

The 3524 is configured with the following:

interface GigabitEthernet0/1

description CAT3750 Gi1/0/2

switchport trunk encapsulation dot1q

switchport mode trunk

The 3750 is showing connected and the 3524 is showing not connected.

New Member

Re: WS-G5483 is not able to trunk between switches

There is no information about trunked vlans.

Moreover all trunked vlans should be added to vlandatabase.

BR. Amdil

New Member

Re: WS-G5483 is not able to trunk between switches

Right and I have them added.

The trunk is defaulted to allow 1-1005 vlans which are included in the vlan database.

Since switchport trunk allowed 1-1005 is default it will not show up in the configuration.

New Member

Re: WS-G5483 is not able to trunk between switches

You didn't mention about vlan's no. so I asked.

Please, let me know the output from the following commands:

cat3750 & cat3524

sh int Gi1/0/2 ; sh int gi0/1

sh int tru

BR.Amdil

New Member

Re: WS-G5483 is not able to trunk between switches

cat3750#sh int Gi1/0/2

GigabitEthernet1/0/2 is up, line protocol is up (connected)

Hardware is Gigabit Ethernet, address is 0014.6a1e.5402 (bia 0014.6a1e.5402)

Description: CAT3524 Gi0/1

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive not set

Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:11:25, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 3000 bits/sec, 5 packets/sec

1071 packets input, 86556 bytes, 0 no buffer

Received 1017 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 1006 multicast, 0 pause input

0 input packets with dribble condition detected

6131 packets output, 567933 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

CAT3524#sh int gi0/1

GigabitEthernet0/1 is down, line protocol is down

Hardware is Gigabit Ethernet, address is 0007.50a6.f919 (bia 0007.50a6.f919)

Description: CAT3750 Gi1/0/2

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive not set

Full-duplex, 1000Mb/s, media type is T

output flow-control is off, input flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 2d05h, output 00:11:58, output hang never

Last clearing of "show interface" counters never

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 0 drops

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

75 packets input, 842488 bytes, 0 no buffer

Received 64 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 12 multicast, 0 pause input

73 packets output, 8703 bytes, 0 underruns

0 output errors, 0 collisions, 26 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 pause output

0 output buffer failures, 0 output buffers swapped out

cat3750#sh int tru

Port Mode Encapsulation Status Native vlan

Fa1/0/10 on 802.1q trunking 10

Fa1/0/11 on 802.1q trunking 10

Gi1/0/2 on 802.1q trunking 1

Port Vlans allowed on trunk

Fa1/0/10 1-4094

Fa1/0/11 1-4094

Gi1/0/2 1-4094

Port Vlans allowed and active in management domain

Fa1/0/10 1-3,5,7,10,100,192,210

Fa1/0/11 1-3,5,7,10,100,192,210

Gi1/0/2 1-3,5,7,10,100,192,210

Port Vlans in spanning tree forwarding state and not pruned

Fa1/0/10 1-3,5,7,10,100,192,210

Fa1/0/11 1-3,5,7,10,100,192,210

Gi1/0/2 1-3,5,7,10,100,192,210

New Member

Re: WS-G5483 is not able to trunk between switches

The trunk configuration is OK.

You have a problem with physical connection.

("GigabitEthernet0/1 is down, line protocol is down")

Check your GBIC and particularly cable.

BR.Amdil

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