RE: dot1q tunneling

From: Patrick Lynchehaun (plynch@servecentric.com)
Date: Wed Feb 16 2005 - 11:13:42 GMT-3


ccie2be

Cisco-Cork#sh in fastEthernet 0/1
FastEthernet0/1 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0011.bbac.3301 (bia 0011.bbac.3301)
  Description:
  MTU 1528 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, media type is unknown media type
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:08, 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 24000 bits/sec, 42 packets/sec
  5 minute output rate 139000 bits/sec, 13 packets/sec
     201356718 packets input, 2124812496 bytes, 0 no buffer
     Received 194903527 broadcasts (0 multicast)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 194887888 multicast, 0 pause input
     0 input packets with dribble condition detected
     16380828 packets output, 4140436891 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
Cisco-Cork#sh dot1q int fastEthernet 0/1
LAN Port(s)
-----------
Fa0/1

Cisco-Cork#sh conf | b interface FastEthernet0/1
interface FastEthernet0/1
 switchport access vlan 751
 switchport mode dot1q-tunnel
 speed 100
 duplex full
 no cdp enable
 spanning-tree bpdufilter enable

Cisco-Cork#sh in fa0/3
FastEthernet0/3 is down, line protocol is down (notconnect)
  Hardware is Fast Ethernet, address is 0011.bbac.3303 (bia 0011.bbac.3303)
  MTU 1528 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed, media type is unknown media type
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 8w1d, 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
     66 packets input, 9424 bytes, 0 no buffer
     Received 66 broadcasts (0 multicast)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     149 packets output, 9536 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

Cisco-Cork#sh dot1q int fastEthernet 0/3
LAN Port(s)
-----------

Cisco-Cork#sh conf | b interface FastEthernet0/3
interface FastEthernet0/3
 switchport access vlan 601
 switchport mode dot1q-tunnel
 spanning-tree bpdufilter enable
!

Thanks,
        Patrick.

-----Original Message-----
From: ccie2be [mailto:ccie2be@nyc.rr.com]
Sent: 16 February 2005 14:09
To: Patrick Lynchehaun
Cc: Group Study
Subject: Re: dot1q tunneling

Thanks Patrick.

I was hoping that wasn't the case since that means there's not a good way of
verifying the config during the lab.

Have you tested this and know for sure this is true?

Tim
----- Original Message -----
From: "Patrick Lynchehaun" <plynch@servecentric.com>
To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study" <ccielab@groupstudy.com>
Sent: Wednesday, February 16, 2005 9:04 AM
Subject: RE: dot1q tunneling

ccie2be,
The port has to be connected.

Patrick.

-----Original Message-----
From: ccie2be [mailto:ccie2be@nyc.rr.com]
Sent: 16 February 2005 13:29
To: Group Study
Subject: dot1q tunneling

Hi guys,

I just configured dot1q tunneling but the switch doesn't acknowledge this.

sw2#r int fa0/20
Building configuration...

Current configuration : 93 bytes
!
interface FastEthernet0/20
 switchport access vlan 1000
 switchport mode dot1q-tunnel
end

sw2#sh vlan dot1q tag nat
dot1q native vlan tagging is enabled
sw2#sh dot1q int fa0/20

dot1q-tunnel mode LAN Port(s)
-----------------------------
sw2#

As you can see from the output, no ports are shown as dot1q-tunnel mode
ports.
Why is this?

Do I need to reload the switch? Does this port have to be actually
connected
to another switch?

Any insight would be greatly appreciated.

TIA, Tim



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