From: MADMAN (dmadlan@qwest.com)
Date: Tue Sep 30 2003 - 14:47:35 GMT-3
ccie2be wrote:
> Hi,
>
> In the config below, aren't these 2 commands:
>
> switchport access vlan 64
> switchport trunk encapsulation dot1q
>
> contradictory and mutually exclusive? It seems to me that a port is either
> a trunk or access port. There are some other posts from Scott Morris on
> this topic as well which should also be looked at.
>
> Also, considering the 2 commands above, does the order in which the commands
> are entered make any difference in how the port behaves?
Yes they are mutually exclusive, if the link comes up as a trunk, a
trunk it will be. If not, say you plug a PC into this port, wallah, it
is an access port on VLAN 64 automagically.
Dave
>
> Thanks, dt
>
>
> ----- Original Message -----
> From: "MADMAN" <dmadlan@qwest.com>
> To: "Kenneth Wygand" <KWygand@customonline.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Tuesday, September 30, 2003 10:46 AM
> Subject: Re: Native-VLAN vs. Switchport Access VLAN
>
>
>
>> This issue, posed differantly, was asked the other day. You
>>configure your trunk with the access vlan also configured as your backup:
>>
>>interface GigabitEthernet1/1
>> no ip address
>> no logging event link-status
>> switchport
>> switchport access vlan 64
>> switchport trunk encapsulation dot1q
>>
>> substitute 568 for 64.
>>
>> Dave
>>
>>
>>Kenneth Wygand wrote:
>>
>>
>>>Hello group,
>>>
>>>
>>>
>>>I have two (2) 3550's with an ISL trunk between them on FastEthernet0/10
>>>(both sides).
>>>
>>>
>>>
>>>I have a practice lab question that states "If the trunk encapsulation
>>>should fail, ensure that VLAN 568 is still forwarded across the link".
>>>
>>>
>>>
>>>My thought was to set the trunk mode to DESIRABLE on both sides and
>>>include a "switchport access vlan 568" command on the interface in the
>>>case when the trunk does not establish. However, the answer key states
>>>that the trunk is nailed down on both sides (switchport mode trunk) and
>>>the native-vlan is set to 568 on both sides (switchport trunk native
>>>vlan 568).
>>>
>>>
>>>
>>>Which is right, or do both answers satisfy the requirements?
>>>
>>>
>>>
>>>If these yield different results and a question like this is asked on
>>>the lab exam, what question could we ask of the proctor to determine
>>>which configuration is correct?
>>>
>>>
>>>
>>>Thanks,
>>>
>>>
>>>
>>>Kenneth E. Wygand
>>>Systems Engineer, Project Services
>>>
>>>CISSP #37102, CCNP, CCDP, MCP 2000, CNA 5.1, Network+, A+
>>>Custom Computer Specialists, Inc.
>>>70 Suffolk Court
>>>Hauppauge, NY 11788
>>>(631) 864-6699 x1755
>>>
>>>"It's not just about ending up where you want to be, it's about making
>>>the most of the trip there."
>>>-Anonymous
>>>
>>>***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
>>>_______________________________________________________________________
>>>Please help support GroupStudy by purchasing your study materials from:
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>>>
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>>>
>>
>>--
>>David Madland
>>CCIE# 2016
>>Sr. Network Engineer
>>Qwest Communications
>>612-664-3367
>>
>>"Emotion should reflect reason not guide it"
>>
>>***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
>>_______________________________________________________________________
>>Please help support GroupStudy by purchasing your study materials from:
>>shop.groupstudy.com
>>
>>Subscription information may be found at:
>>http://www.groupstudy.com/list/CCIELab.html
>
>
> ***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> shop.groupstudy.com
>
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>
-- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367"Emotion should reflect reason not guide it"
***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
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