[c-nsp] Catalyst 2950G Trunking Issue
Juan C. Crespo R.
jcposeidon at cantv.net
Thu Mar 29 13:22:37 EST 2007
Michael, the vlan interface on each switch are different (10.0.0.1,
10.0.0.2), the default-gateway is set to 10.0.0.3, but into my
knowledge, there is no need to use one router to allow the ping on each
one, if they are on the same subnet.
Michael K. Smith - Adhost escribió:
>
> Hello:
>
>
>
> Okay, top posting. J Is the default gateway reachable by both
> devices? I didn't see an ARP entry that looked like a default
> gateway, given that only the remote-switch MAC Address. If you have
> the same address for both that's either one of the switches or is not
> reachable then that may cause issues.
>
>
>
> Mike
>
>
>
> *From:* Juan C. Crespo R. [mailto:jcposeidon at cantv.net]
> *Sent:* Thursday, March 29, 2007 10:18 AM
> *To:* Michael K. Smith - Adhost
> *Cc:* cisco-nsp at puck.nether.net
> *Subject:* Re: [c-nsp] Catalyst 2950G Trunking Issue
>
>
>
> Ok
>
> The 2950G Switch is L2, and I have the same default-gateway on both.
>
> Thanks
>
> Michael K. Smith - Adhost escribió:
>
> Hello Juan:
>
>
>
> -----Original Message-----
>
> From: cisco-nsp-bounces at puck.nether.net <mailto:cisco-nsp-bounces at puck.nether.net> [mailto:cisco-nsp-
>
> bounces at puck.nether.net <mailto: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 <mailto: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
>
>
>
>
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