From: Mike Flanagan (mikenoc@mindspring.com)
Date: Sun Oct 31 2004 - 13:02:32 GMT-3
Hello,
This task asks to configure a configure a trunk port between fa0/6 and
r6 fa1/0/0. It also states that you should not negotiate it via DTP.
The solutions guide has the below solution
Int fa0/6
switchport trunk encapsulation dot1q
switchport mode trunk
Now the trunk will never negotiate via DTP because R6 cannot perform
DTP. But I believe that sw1 will still try and send DTP frames to R6.
If I use the switchport nonegotiate command it should turn off DTP on R6.
Should you also use the switchport nonegotiate command to turn off DTP ?
Thanks in advance,
Mike F.
Rack1SW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack1SW1(config)#int fa0/6
Rack1SW1(config-if)#switchport trunk encapsulation dot1q
01:51:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/6,
changed state to down
01:51:47: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/6,
changed state to up
Rack1SW1(config-if)#switchport mode trunk
Rack1SW1(config-if)#end
Rack1SW1#
Rack1SW1#sh interfaces fa0/6 switchport
Name: Fa0/6
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On <---- Looks like DTP is still on !!
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: none
Rack1SW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack1SW1(config)#int fa0/6
Rack1SW1(config-if)#switchport nonegotiate
Rack1SW1(config-if)#end
Rack1SW1#
Rack1SW1#sh interfaces fa0/6 switchport
Name: Fa0/6
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Off <---- Trunking is now OFF !!!
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