[c-nsp] Catalyst 2950G Trunking Issue
Juan C. Crespo R.
jcposeidon at cantv.net
Mon Mar 26 12:39:11 EST 2007
SWITCH-A#show interfaces gigabitEthernet 0/1 trunk
Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/1 1,10-25,354,456,845
Port Vlans allowed and active in management domain
Gi0/1 1
Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1
SWITCH-A#show interfaces vlan 1
Vlan1 is up, line protocol is up
Hardware is CPU Interface, address is 03b0.24b1.5180 (bia 03b0.24b1.5180)
Internet address is 10.0.0.1/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, 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 0 bits/sec, 0 packets/sec
25 packets input, 3264 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
164 packets output, 0 bytes, 0 underruns
0 output errors, 4 interface resets
0 output buffer failures, 0 output buffers swapped out
SWITCH-A# show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.0.0.1 - 03b0.24b1.5180 ARPA Vlan1
SWITCH-B#show interfaces gigabitEthernet 0/1 trunk
Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/1 1,10-25,354,456,845
Port Vlans allowed and active in management domain
Gi0/1 1
Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1
SWITCH-B#show interfaces vlan 1
Vlan1 is up, line protocol is up
Hardware is CPU Interface, address is 03b2.24b1.5180 (bia 03b2.24b1.5180)
Internet address is 10.0.0.2/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, 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 0 bits/sec, 0 packets/sec
210 packets input, 15072 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
34 packets output, 0 bytes, 0 underruns
0 output errors, 4 interface resets
0 output buffer failures, 0 output buffers swapped out
SWITCH-B# show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.0.0.2 - 03b2.24b1.5180 ARPA Vlan1
SWITCH-B#ping 10.0.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
SWITCH-A#ping 10.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
SWITCH-A#
Thanks..
Michael K. Smith - Adhost escribió:
> Hello:
>
>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
>> bounces at puck.nether.net] On Behalf Of Juan C. Crespo R.
>> Sent: Sunday, March 25, 2007 1:51 PM
>> To: saso pirnat
>> Cc: cisco-nsp at puck.nether.net
>> Subject: Re: [c-nsp] Catalyst 2950G Trunking Issue
>>
>> Well, It works the Device connected to the VLans ports works Ok, but
>> the
>> interface Vlan 1 on Catalyst A cannot see the interface Vlan 1 on
>> Catalyst B.
>>
>> Any Idea?? :-(
>>
>> saso pirnat escribió:
>>
>>> dalton wrote:
>>>
>>>
>>>> is the trunk showing up?
>>>>
>>>> Make sure its a crossover cable connecting them as well.
>>>>
>>>> repost your config, it didn't come through.
>>>>
>>>> -dalton
>>>>
>>>> On Fri, Mar 16, 2007 at 11:44:54AM -0400, Juan C. Crespo R. wrote:
>>>>
>>>>
>>>>> Hi Dears
>>>>>
>>>>> I'm getting problems trunking two Catalyst 2950G, I try a lot of
>>>>>
>> things
>>
>>>>> and I can't make it works. the VLAN 1 on both sides, can't make
>>>>>
>> ping
>>
>>>>> each other, and neither Telnet or SSH, Anyone could send me a
>>>>>
>> config
>>
>>>>> examples about trunking on two 2950G?
>>>>>
>>>>> Thanks
>>>>>
>>>>> this is my config
>>>>>
>>>>> _______________________________________________
>>>>> cisco-nsp mailing list cisco-nsp at puck.nether.net
>>>>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>>>>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>>>>>
>>>>>
>>>> _______________________________________________
>>>> cisco-nsp mailing list cisco-nsp at puck.nether.net
>>>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>>>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>>>>
>>>>
>>> You should specify which vlans are allowed in trunk:
>>>
>>> interface GigabitEthernet2/3
>>> switchport trunk encapsulation dot1q
>>> switchport trunk allowed vlan 1,10-25,354,456,845
>>> switchport mode trunk
>>> mls qos trust dscp
>>>
>
> Could you post the configuration for both sides of the trunk? You may also want to include:
>
> - show int <whatever> trunk (on both)
> - show int vlan 1 (on both)
> - show are (on both)
>
> Mike
>
>
>
>
More information about the cisco-nsp
mailing list