[c-nsp] Catalyst 2950G Trunking Issue

[Michael K. Smith - Adhost]

Hello Juan:

> -----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: Thursday, March 29, 2007 6:51 AM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Catalyst 2950G Trunking Issue
> 
> Reposting....
> 
> 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#
> 


Depending on whether or not your switch is running in L2 or L3 mode, do
you have either a default route, default-gateway or both?  For testing,
you may want to set the appropriate variable to the other device.

Mike