Can't find answer in book

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Can't find answer in book

Bullfrog
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Can't find answer in book

I took the test a couple of weeks ago and missed by a couple of questions. One question still eludes me and I can't find the answer in my book.(used the Wendell Odom Cert guide Book)The question went something like this.
The following is a partial representation of the result obtained when entering the show interface serial command: Router# show int s 1
Serial is up, line protocol is down
How would you interpret this status printout?
Is this administratively shut down? What can cause this.
Thanks

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07-08-02 05:56 PM

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mikop
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http://www.cisco.com/univercd/cc/td...tg_v1/index.htm

i don't have the latest odom's book so can't look for info there.

go to above link

check *troubleshooting serial line*

http://www.cisco.com/univercd/cc/td...g_v1/tr1915.htm

check *troubleshooting ethernet*

http://www.cisco.com/univercd/cc/td...g_v1/tr1904.htm

and others, I didn't go thru them all, just went thru these 2 real quick to confirm it has relevant information.

for example, on ether scroll to bottom of page, you should get a quick 1 liner in a table. serial is more indepth, read it for sure. after looking over these 2, look over others. compare, apply what you 've learn and you will have your answer and more.

edit: heh re-read your question, so definitely read the serial one. again, here is the link http://www.cisco.com/univercd/cc/td...g_v1/tr1915.htm

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07-08-02 06:07 PM

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jeff_j_black
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Keep alive issue or other protocol configuration, is most likely what at hand here.

Administratively down 'shows' as administratively down.

down (disabled) is a hardware issue.

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07-08-02 06:52 PM

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seraphim777
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Re: Can't find answer in book

Bullfrog this sounds like a remote physical layer problem.

quote:
Originally posted by Bullfrog
I took the test a couple of weeks ago and missed by a couple of questions. One question still eludes me and I can't find the answer in my book.(used the Wendell Odom Cert guide Book)The question went something like this.
The following is a partial representation of the result obtained when entering the show interface serial command: Router# show int s 1
Serial is up, line protocol is down
How would you interpret this status printout?
Is this administratively shut down? What can cause this.
Thanks

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07-09-02 04:19 PM

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makan007
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line protocol is down -> got to do with encapsulation.

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07-11-02 12:25 PM

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eeesoftware
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Line is down

Serial link up / Line protocol Down

means that there is no traffic in the other end therfore no protocol..

Br

eee

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seraphim777
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Re: Line is down

quote:
Originally posted by eeesoftware
Serial link up / Line protocol Down

means that there is no traffic in the other end therfore no protocol..

Br

eee

If you have serial link down and line protocal down that is an adminstratedly shutdown serial interface.

If you have serial up and line down it means you have a remote problem.

Makan007 is right.

I have not come across serial down and line protocal up, this wouldn't make any sense.

I forget where I saw this info, I have been studying alot for this exam, I have used Todd Lammel and Element K online studying.

I right my exam tommorrow, so I guess we'll find out if I did my homework.

Anyways this is the best I can do, I have to get back to the books. Good Luck.

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07-11-02 03:45 PM

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freak
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If you unplug the cable from the router, you will get a protocol down message when you run a command like "sh ip int bri"...

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07-11-02 04:21 PM

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seraphim777
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quote:
Originally posted by freak
If you unplug the cable from the router, you will get a protocol down message when you run a command like "sh ip int bri"...

That makes sense. Thanks

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07-11-02 05:27 PM

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freak
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You're welcome. BTW you will also get that error is you use a crossover cable as opposed to a straight through cable

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07-11-02 05:33 PM

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