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Why trunk does not work?

 
 
Vitor Flausino
Guest
Posts: n/a
 
      02-28-2005
Hello all!
What is missing?

I want to connect two Catalys 2950 in a trunk mode. The connection is
made using port 48 from switch LISAN017 and port 20 of switch LISAN006.

Here is the configuration for switch LISAN017

LISAN017#show interface FastEthernet 0/48 switchport
Name: Fa0/48
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 2 (interna)
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: 2,100
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Appliance trust: none


LISAN017#show interfaces trunk

Port Mode Encapsulation Status Native vlan
Fa0/48 on 802.1q trunking 2
Po1 on 802.1q trunking 2

Port Vlans allowed on trunk
Fa0/48 2,100
Po1 none

Port Vlans allowed and active in management domain
Fa0/48 2,100
Po1 none

Port Vlans in spanning tree forwarding state and not pruned
Fa0/48 none
Po1 none


LISAN017#show interface Vlan 2
Vlan2 is up, line protocol is up
Hardware is CPU Interface, address is 0012.d967.b340 (bia 0012.d967.b340)
Internet address is 57.227.235.89/23
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 1d18h, 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 1000 bits/sec, 2 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
432877 packets input, 32298093 bytes, 0 no buffer
Received 247647 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 225092 ignored
29637 packets output, 2253056 bytes, 0 underruns
0 output errors, 2 interface resets
0 output buffer failures, 0 output buffers swapped out


And for switch LISAN006


LISAN006#show interface FastEthernet 0/20 switchport
Name: Fa0/20
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 2 (interna)
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: 2,100
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Appliance trust: none

LISAN006#show interfaces trunk

Port Mode Encapsulation Status Native vlan
Fa0/20 on 802.1q trunking 2
Po1 on 802.1q trunking 2

Port Vlans allowed on trunk
Fa0/20 2,100
Po1 none

Port Vlans allowed and active in management domain
Fa0/20 2,100
Po1 none

Port Vlans in spanning tree forwarding state and not pruned
Fa0/20 2,100
Po1 none

LISAN006#show interface Vlan 2
Vlan2 is up, line protocol is up
Hardware is CPU Interface, address is 000f.2479.d8c0 (bia 000f.2479.d8c0)
Internet address is 57.227.235.88/23
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 00:00:00, 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 4000 bits/sec, 6 packets/sec
5 minute output rate 9000 bits/sec, 8 packets/sec
966048 packets input, 75123372 bytes, 0 no buffer
Received 256341 broadcasts (0 IP multicast)
0 runts, 0 giants, 13 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
1460405 packets output, 124633446 bytes, 0 underruns
0 output errors, 1 interface resets
0 output buffer failures, 0 output buffers swapped out


Both ligths are grenn and blinking.

I'm able to ping LISAN006 but not LISAN017. WHY????

Best regards and thaknx,
-vcf
 
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ws00sw@gmail.com
Guest
Posts: n/a
 
      02-28-2005
What does your VTP Configuration look like?
Can you post the show run pls.

 
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Vitor Flausino
Guest
Posts: n/a
 
      02-28-2005
wrote:
> What does your VTP Configuration look like?
> Can you post the show run pls.
>


here is the show run of LISAN0017


Building configuration...

Current configuration : 4396 bytes
!
! Last configuration change at 09:38:46 UTC Mon Feb 28 2005
! NVRAM config last updated at 09:39:20 UTC Mon Feb 28 2005
!
version 12.1
no service pad
service timestamps debug datetime
service timestamps log datetime
service password-encryption
no service dhcp
!
hostname LISAN017
!
no logging monitor
enable secret 5 $1$favU$cKgRu5OMeBP.sM72IsaKs/
enable password 7 01100F175804
!
ip subnet-zero
!
ip domain-name pga.pt
ip name-server 57.227.234.35
ip name-server 10.27.2.2
!
!
spanning-tree mode mst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
no spanning-tree vlan 1-2,100
!
spanning-tree mst configuration
name PGA
!
!
!
!
!
interface Port-channel1
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
spanning-tree portfast
!
interface FastEthernet0/1
switchport access vlan 2
!
interface FastEthernet0/2
switchport access vlan 2
!
interface FastEthernet0/3
switchport access vlan 2
!
interface FastEthernet0/4
switchport access vlan 2
!
interface FastEthernet0/5
switchport access vlan 2
!
interface FastEthernet0/6
switchport access vlan 2
!
interface FastEthernet0/7
switchport access vlan 2
!
interface FastEthernet0/8
switchport access vlan 2
!
interface FastEthernet0/9
switchport access vlan 2
!
interface FastEthernet0/10
switchport access vlan 2
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/11
switchport access vlan 2
!
interface FastEthernet0/12
switchport access vlan 2
!
interface FastEthernet0/13
switchport access vlan 2
!
interface FastEthernet0/14
switchport access vlan 2
!
interface FastEthernet0/15
switchport access vlan 2
!
interface FastEthernet0/16
switchport access vlan 2
!
interface FastEthernet0/17
switchport access vlan 100
!
interface FastEthernet0/18
switchport access vlan 100
!
interface FastEthernet0/19
switchport access vlan 100
!
interface FastEthernet0/20
switchport access vlan 100
!
interface FastEthernet0/21
switchport access vlan 100
!
interface FastEthernet0/22
switchport access vlan 100
!
interface FastEthernet0/23
switchport access vlan 100
!
interface FastEthernet0/24
switchport access vlan 100
!
interface FastEthernet0/25
switchport access vlan 100
!
interface FastEthernet0/26
switchport access vlan 100
!
interface FastEthernet0/27
switchport access vlan 100
!
interface FastEthernet0/28
switchport access vlan 100
!
interface FastEthernet0/29
switchport access vlan 100
!
interface FastEthernet0/30
switchport access vlan 100
!
interface FastEthernet0/31
switchport access vlan 100
!
interface FastEthernet0/32
switchport access vlan 100
!
interface FastEthernet0/33
!
interface FastEthernet0/34
!
interface FastEthernet0/35
!
interface FastEthernet0/36
!
interface FastEthernet0/37
!
interface FastEthernet0/38
!
interface FastEthernet0/39
!
interface FastEthernet0/40
!
interface FastEthernet0/41
!
interface FastEthernet0/42
!
interface FastEthernet0/43
!
interface FastEthernet0/44
!
interface FastEthernet0/45
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/46
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/47
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/48
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100
switchport mode trunk
spanning-tree portfast
!
interface GigabitEthernet0/1
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
!
interface GigabitEthernet0/2
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
interface Vlan2
ip address 57.227.235.89 255.255.254.0
no ip route-cache
!
interface Vlan100
no ip address
no ip route-cache
shutdown
!
ip default-gateway 57.227.235.254
ip http server
snmp-server community public RO
!
line con 0
line vty 0 4
password 7 110A1016141D
login
line vty 5 15
password 7 00071A150754
login
!
ntp clock-period 17179871
ntp server 10.27.2.7
ntp server 57.227.234.35
!
end




and LISAN006


LISAN006#show run
Building configuration...

Current configuration : 3555 bytes
!
! Last configuration change at 09:36:03 UTC Mon Feb 28 2005
! NVRAM config last updated at 09:36:46 UTC Mon Feb 28 2005
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname LISAN006
!
enable secret 5 $1$EzQX$acdBnoMmZo/X0idASOGMz/
!
ip subnet-zero
!
ip domain-name pga.pt
ip name-server 57.227.234.35
ip name-server 10.27.2.2
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface Port-channel1
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
shutdown
flowcontrol send off
spanning-tree portfast
!
interface FastEthernet0/1
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/2
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/3
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/4
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/5
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/6
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/7
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/8
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/9
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/10
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/11
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/12
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/13
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/14
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/15
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/16
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/17
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/18
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/19
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100,1002-1005
switchport mode trunk
switchport nonegotiate
shutdown
channel-group 1 mode desirable
spanning-tree portfast
!
interface FastEthernet0/20
switchport trunk native vlan 2
switchport trunk allowed vlan 2,100
switchport mode trunk
spanning-tree portfast
!
interface FastEthernet0/21
switchport access vlan 4
spanning-tree portfast
!
interface FastEthernet0/22
switchport access vlan 4
spanning-tree portfast
!
interface FastEthernet0/23
switchport access vlan 4
spanning-tree portfast
!
interface FastEthernet0/24
switchport access vlan 4
spanning-tree portfast
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
interface Vlan2
ip address 57.227.235.88 255.255.254.0
no ip route-cache
!
interface Vlan100
no ip address
no ip route-cache
shutdown
!
ip default-gateway 57.227.235.254
ip http server
!
snmp-server community public RO
!
line con 0
password cisco
login
line vty 0 4
password cisco
login
line vty 5 15
password cisco
login
!
ntp clock-period 17180043
ntp server 10.27.2.7
ntp server 57.227.234.35
end


Thankx,
-vcf
 
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Kevin Widner
Guest
Posts: n/a
 
      02-28-2005
My hunch thus far....


LISAN017#show interfaces trunk

Port Mode Encapsulation Status Native vlan
Fa0/48 on 802.1q trunking 2
Po1 on 802.1q trunking 2

Port Vlans allowed on trunk
Fa0/48 2,100
Po1 none

Port Vlans allowed and active in management domain
Fa0/48 2,100
Po1 none

Port Vlans in spanning tree forwarding state and not pruned
Fa0/48 none
Po1 none


>From your output, it may be a spanning-tree issue, since it looks as if

the switches understand the config, but the vlans have not gone
forwarding over the trunk. Post a "show spanning-tree active", and a
diagram of how you have the two connected. Also, have you thought about
removing the portfast command and explicitly stating the trunk
encapsulation? "switchport trunk encapsulation dot1q" Not saying
these last two things are your problem, but it would seem wise.

 
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Eric Louie
Guest
Posts: n/a
 
      03-01-2005
One of them needs to be a server, the other a client. Just defining them on
a port does not make them "exist", that does not define their
characteristics.

http://www.cisco.com/en/US/products/...08007e91e.html

Eric

"Vitor Flausino" <> wrote in message
news:42231131$0$3682$. ..
> Hello all!
> What is missing?
>
> I want to connect two Catalys 2950 in a trunk mode. The connection is made
> using port 48 from switch LISAN017 and port 20 of switch LISAN006.
>
> Here is the configuration for switch LISAN017
>
> LISAN017#show interface FastEthernet 0/48 switchport
> Name: Fa0/48
> Switchport: Enabled
> Administrative Mode: trunk
> Operational Mode: trunk
> Administrative Trunking Encapsulation: dot1q
> Operational Trunking Encapsulation: dot1q
> Negotiation of Trunking: On
> Access Mode VLAN: 1 (default)
> Trunking Native Mode VLAN: 2 (interna)
> Voice VLAN: none
> Administrative private-vlan host-association: none
> Administrative private-vlan mapping: none
> Administrative private-vlan trunk native VLAN: none
> Administrative private-vlan trunk encapsulation: dot1q
> Administrative private-vlan trunk normal VLANs: none
> Administrative private-vlan trunk private VLANs: none
> Operational private-vlan: none
> Trunking VLANs Enabled: 2,100
> Pruning VLANs Enabled: 2-1001
> Capture Mode Disabled
> Capture VLANs Allowed: ALL
> Protected: false
> Appliance trust: none
>
>
> LISAN017#show interfaces trunk
>
> Port Mode Encapsulation Status Native vlan
> Fa0/48 on 802.1q trunking 2
> Po1 on 802.1q trunking 2
>
> Port Vlans allowed on trunk
> Fa0/48 2,100
> Po1 none
>
> Port Vlans allowed and active in management domain
> Fa0/48 2,100
> Po1 none
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/48 none
> Po1 none
>
>
> LISAN017#show interface Vlan 2
> Vlan2 is up, line protocol is up
> Hardware is CPU Interface, address is 0012.d967.b340 (bia
> 0012.d967.b340)
> Internet address is 57.227.235.89/23
> 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 1d18h, 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 1000 bits/sec, 2 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 432877 packets input, 32298093 bytes, 0 no buffer
> Received 247647 broadcasts (0 IP multicast)
> 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 225092 ignored
> 29637 packets output, 2253056 bytes, 0 underruns
> 0 output errors, 2 interface resets
> 0 output buffer failures, 0 output buffers swapped out
>
>
> And for switch LISAN006
>
>
> LISAN006#show interface FastEthernet 0/20 switchport
> Name: Fa0/20
> Switchport: Enabled
> Administrative Mode: trunk
> Operational Mode: trunk
> Administrative Trunking Encapsulation: dot1q
> Operational Trunking Encapsulation: dot1q
> Negotiation of Trunking: On
> Access Mode VLAN: 1 (default)
> Trunking Native Mode VLAN: 2 (interna)
> Voice VLAN: none
> Administrative private-vlan host-association: none
> Administrative private-vlan mapping: none
> Administrative private-vlan trunk native VLAN: none
> Administrative private-vlan trunk encapsulation: dot1q
> Administrative private-vlan trunk normal VLANs: none
> Administrative private-vlan trunk private VLANs: none
> Operational private-vlan: none
> Trunking VLANs Enabled: 2,100
> Pruning VLANs Enabled: 2-1001
> Capture Mode Disabled
> Capture VLANs Allowed: ALL
> Protected: false
> Appliance trust: none
>
> LISAN006#show interfaces trunk
>
> Port Mode Encapsulation Status Native vlan
> Fa0/20 on 802.1q trunking 2
> Po1 on 802.1q trunking 2
>
> Port Vlans allowed on trunk
> Fa0/20 2,100
> Po1 none
>
> Port Vlans allowed and active in management domain
> Fa0/20 2,100
> Po1 none
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/20 2,100
> Po1 none
>
> LISAN006#show interface Vlan 2
> Vlan2 is up, line protocol is up
> Hardware is CPU Interface, address is 000f.2479.d8c0 (bia
> 000f.2479.d8c0)
> Internet address is 57.227.235.88/23
> 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 00:00:00, 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 4000 bits/sec, 6 packets/sec
> 5 minute output rate 9000 bits/sec, 8 packets/sec
> 966048 packets input, 75123372 bytes, 0 no buffer
> Received 256341 broadcasts (0 IP multicast)
> 0 runts, 0 giants, 13 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 1460405 packets output, 124633446 bytes, 0 underruns
> 0 output errors, 1 interface resets
> 0 output buffer failures, 0 output buffers swapped out
>
>
> Both ligths are grenn and blinking.
>
> I'm able to ping LISAN006 but not LISAN017. WHY????
>
> Best regards and thaknx,
> -vcf



 
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Vitor Flausino
Guest
Posts: n/a
 
      03-01-2005
I just need to do that if I want to publich the vlan configuration...


When a switch is in VTP server mode, you can change the VLAN
configuration and have it propagated throughout the network.

Thanks any way for the tip...
-vcf



Eric Louie wrote:
> One of them needs to be a server, the other a client. Just defining them on
> a port does not make them "exist", that does not define their
> characteristics.
>
> http://www.cisco.com/en/US/products/...08007e91e.html
>
> Eric
>
> "Vitor Flausino" <> wrote in message
> news:42231131$0$3682$. ..
>
>>Hello all!
>>What is missing?
>>
>>I want to connect two Catalys 2950 in a trunk mode. The connection is made
>>using port 48 from switch LISAN017 and port 20 of switch LISAN006.
>>
>>Here is the configuration for switch LISAN017
>>
>>LISAN017#show interface FastEthernet 0/48 switchport
>>Name: Fa0/48
>>Switchport: Enabled
>>Administrative Mode: trunk
>>Operational Mode: trunk
>>Administrative Trunking Encapsulation: dot1q
>>Operational Trunking Encapsulation: dot1q
>>Negotiation of Trunking: On
>>Access Mode VLAN: 1 (default)
>>Trunking Native Mode VLAN: 2 (interna)
>>Voice VLAN: none
>>Administrative private-vlan host-association: none
>>Administrative private-vlan mapping: none
>>Administrative private-vlan trunk native VLAN: none
>>Administrative private-vlan trunk encapsulation: dot1q
>>Administrative private-vlan trunk normal VLANs: none
>>Administrative private-vlan trunk private VLANs: none
>>Operational private-vlan: none
>>Trunking VLANs Enabled: 2,100
>>Pruning VLANs Enabled: 2-1001
>>Capture Mode Disabled
>>Capture VLANs Allowed: ALL
>>Protected: false
>>Appliance trust: none
>>
>>
>>LISAN017#show interfaces trunk
>>
>>Port Mode Encapsulation Status Native vlan
>>Fa0/48 on 802.1q trunking 2
>>Po1 on 802.1q trunking 2
>>
>>Port Vlans allowed on trunk
>>Fa0/48 2,100
>>Po1 none
>>
>>Port Vlans allowed and active in management domain
>>Fa0/48 2,100
>>Po1 none
>>
>>Port Vlans in spanning tree forwarding state and not pruned
>>Fa0/48 none
>>Po1 none
>>
>>
>>LISAN017#show interface Vlan 2
>>Vlan2 is up, line protocol is up
>> Hardware is CPU Interface, address is 0012.d967.b340 (bia
>>0012.d967.b340)
>> Internet address is 57.227.235.89/23
>> 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 1d18h, 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 1000 bits/sec, 2 packets/sec
>> 5 minute output rate 0 bits/sec, 0 packets/sec
>> 432877 packets input, 32298093 bytes, 0 no buffer
>> Received 247647 broadcasts (0 IP multicast)
>> 0 runts, 0 giants, 0 throttles
>> 0 input errors, 0 CRC, 0 frame, 0 overrun, 225092 ignored
>> 29637 packets output, 2253056 bytes, 0 underruns
>> 0 output errors, 2 interface resets
>> 0 output buffer failures, 0 output buffers swapped out
>>
>>
>>And for switch LISAN006
>>
>>
>>LISAN006#show interface FastEthernet 0/20 switchport
>>Name: Fa0/20
>>Switchport: Enabled
>>Administrative Mode: trunk
>>Operational Mode: trunk
>>Administrative Trunking Encapsulation: dot1q
>>Operational Trunking Encapsulation: dot1q
>>Negotiation of Trunking: On
>>Access Mode VLAN: 1 (default)
>>Trunking Native Mode VLAN: 2 (interna)
>>Voice VLAN: none
>>Administrative private-vlan host-association: none
>>Administrative private-vlan mapping: none
>>Administrative private-vlan trunk native VLAN: none
>>Administrative private-vlan trunk encapsulation: dot1q
>>Administrative private-vlan trunk normal VLANs: none
>>Administrative private-vlan trunk private VLANs: none
>>Operational private-vlan: none
>>Trunking VLANs Enabled: 2,100
>>Pruning VLANs Enabled: 2-1001
>>Capture Mode Disabled
>>Capture VLANs Allowed: ALL
>>Protected: false
>>Appliance trust: none
>>
>>LISAN006#show interfaces trunk
>>
>>Port Mode Encapsulation Status Native vlan
>>Fa0/20 on 802.1q trunking 2
>>Po1 on 802.1q trunking 2
>>
>>Port Vlans allowed on trunk
>>Fa0/20 2,100
>>Po1 none
>>
>>Port Vlans allowed and active in management domain
>>Fa0/20 2,100
>>Po1 none
>>
>>Port Vlans in spanning tree forwarding state and not pruned
>>Fa0/20 2,100
>>Po1 none
>>
>>LISAN006#show interface Vlan 2
>>Vlan2 is up, line protocol is up
>> Hardware is CPU Interface, address is 000f.2479.d8c0 (bia
>>000f.2479.d8c0)
>> Internet address is 57.227.235.88/23
>> 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 00:00:00, 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 4000 bits/sec, 6 packets/sec
>> 5 minute output rate 9000 bits/sec, 8 packets/sec
>> 966048 packets input, 75123372 bytes, 0 no buffer
>> Received 256341 broadcasts (0 IP multicast)
>> 0 runts, 0 giants, 13 throttles
>> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
>> 1460405 packets output, 124633446 bytes, 0 underruns
>> 0 output errors, 1 interface resets
>> 0 output buffer failures, 0 output buffers swapped out
>>
>>
>>Both ligths are grenn and blinking.
>>
>>I'm able to ping LISAN006 but not LISAN017. WHY????
>>
>>Best regards and thaknx,
>>-vcf

>
>
>

 
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Vitor Flausino
Guest
Posts: n/a
 
      03-01-2005
Here goes the information.....

The switchs are directly connected.

_____________ __________ __________
|My Computer|---(other switchs)-----|LISAN017|-------|LISAN006|
------------- ---------- ----------


LISAN017#show spanning-tree active

MST00
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 0012.d967.b340
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address 0012.d967.b340
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa0/48 Desg BKN*200000 128.48 P2p Bound(PVST) *ROOT_Inc


--------------------------------------------------------------------------------------------------

LISAN006#show spanning-tree active

VLAN0002
Spanning tree enabled protocol ieee
Root ID Priority 20481
Address 000f.8fe5.ac00
Cost 20023
Port 1 (FastEthernet0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32770 (priority 32768 sys-id-ext 2)
Address 000f.2479.d8c0
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa0/1 Root FWD 19 128.1 P2p
Fa0/4 Desg FWD 19 128.4 Edge P2p
Fa0/5 Desg FWD 19 128.5 Edge P2p
Fa0/6 Desg FWD 19 128.6 Edge P2p
Fa0/7 Desg FWD 19 128.7 Edge P2p
Fa0/9 Desg FWD 19 128.9 Edge P2p
Fa0/20 Desg FWD 19 128.20 P2p


VLAN0004
Spanning tree enabled protocol ieee
Root ID Priority 32772
Address 000f.2479.d8c0
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32772 (priority 32768 sys-id-ext 4)
Address 000f.2479.d8c0
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa0/21 Desg FWD 19 128.21 Edge P2p
Fa0/22 Desg FWD 19 128.22 Edge P2p
Fa0/24 Desg FWD 19 128.24 Edge P2p


VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 32868
Address 000f.2479.d8c0
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 000f.2479.d8c0
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300

Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- --------
--------------------------------
Fa0/20 Desg FWD 19 128.20 P2p


Kevin Widner wrote:
> My hunch thus far....
>
>
> LISAN017#show interfaces trunk
>
> Port Mode Encapsulation Status Native vlan
> Fa0/48 on 802.1q trunking 2
> Po1 on 802.1q trunking 2
>
> Port Vlans allowed on trunk
> Fa0/48 2,100
> Po1 none
>
> Port Vlans allowed and active in management domain
> Fa0/48 2,100
> Po1 none
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/48 none
> Po1 none
>
>
>>From your output, it may be a spanning-tree issue, since it looks as if

> the switches understand the config, but the vlans have not gone
> forwarding over the trunk. Post a "show spanning-tree active", and a
> diagram of how you have the two connected. Also, have you thought about
> removing the portfast command and explicitly stating the trunk
> encapsulation? "switchport trunk encapsulation dot1q" Not saying
> these last two things are your problem, but it would seem wise.
>

 
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Vitor Flausino
Guest
Posts: n/a
 
      03-01-2005
By the way....
I tried to force the encapsulation to dot1q but I dont know how. I had
already tried to give the command you sent but it seams that command is
invalid...

LISAN017(config-if)#switchport trunk ?
allowed Set allowed VLAN characteristics when interface is in
trunking mode
native Set trunking native characteristics when interface is in
trunking
mode
pruning Set pruning VLAN characteristics when interface is in
trunking mode

Thanks,
-vcf

Kevin Widner wrote:
> My hunch thus far....
>
>
> LISAN017#show interfaces trunk
>
> Port Mode Encapsulation Status Native vlan
> Fa0/48 on 802.1q trunking 2
> Po1 on 802.1q trunking 2
>
> Port Vlans allowed on trunk
> Fa0/48 2,100
> Po1 none
>
> Port Vlans allowed and active in management domain
> Fa0/48 2,100
> Po1 none
>
> Port Vlans in spanning tree forwarding state and not pruned
> Fa0/48 none
> Po1 none
>
>
>>From your output, it may be a spanning-tree issue, since it looks as if

> the switches understand the config, but the vlans have not gone
> forwarding over the trunk. Post a "show spanning-tree active", and a
> diagram of how you have the two connected. Also, have you thought about
> removing the portfast command and explicitly stating the trunk
> encapsulation? "switchport trunk encapsulation dot1q" Not saying
> these last two things are your problem, but it would seem wise.
>

 
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Vitor Flausino
Guest
Posts: n/a
 
      03-01-2005
Found the problem!!!!!
It was the STP. It was different on both switchs

Thanks!!!!!

Best regards,
-vcf


Vitor Flausino wrote:
> By the way....
> I tried to force the encapsulation to dot1q but I dont know how. I had
> already tried to give the command you sent but it seams that command is
> invalid...
>
> LISAN017(config-if)#switchport trunk ?
> allowed Set allowed VLAN characteristics when interface is in
> trunking mode
> native Set trunking native characteristics when interface is in
> trunking
> mode
> pruning Set pruning VLAN characteristics when interface is in
> trunking mode
>
> Thanks,
> -vcf
>
> Kevin Widner wrote:
>
>> My hunch thus far....
>>
>>
>> LISAN017#show interfaces trunk
>>
>> Port Mode Encapsulation Status Native vlan
>> Fa0/48 on 802.1q trunking 2
>> Po1 on 802.1q trunking 2
>>
>> Port Vlans allowed on trunk
>> Fa0/48 2,100
>> Po1 none
>>
>> Port Vlans allowed and active in management domain
>> Fa0/48 2,100
>> Po1 none
>>
>> Port Vlans in spanning tree forwarding state and not pruned
>> Fa0/48 none
>> Po1 none
>>
>>
>>> From your output, it may be a spanning-tree issue, since it looks as if

>>
>> the switches understand the config, but the vlans have not gone
>> forwarding over the trunk. Post a "show spanning-tree active", and a
>> diagram of how you have the two connected. Also, have you thought about
>> removing the portfast command and explicitly stating the trunk
>> encapsulation? "switchport trunk encapsulation dot1q" Not saying
>> these last two things are your problem, but it would seem wise.
>>

 
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