From: Ahmed Mamoor Amimi (mamoor@xxxxxxxx)
Date: Fri Sep 28 2001 - 12:37:39 GMT-3
ok.....
there are different types of RS232 chips are embedded even in same series
and same model router. So it will be useless to tell u the chip #.
When u will open up ur box look close to the chips that are circuiting with
the console port. In some router there are decoder or buffer chip first then
u will get the buffer or decoder connected to the RS232 chip. copy that chip
# from it and search for that # on ur favourite search engine. U will find
details of it. then download the datasheet of that chip from the
manufacturer site that will give u the logic of that IC then u can test ur
IC with the PROB.
This is a not a hard process but it will it will recover ur router if only
console port is dead.
-Mamoor
-----Original Message-----
From: Hans [mailto:yyao@sympatico.ca]
Sent: Thursday, December 13, 2001 6:20 AM
To: Ahmed Mamoor Amimi; basel@cisco.com
Cc: ccielab@groupstudy.com
Subject: Re: console not working
Hi Ahmed,
Thanks for your reply. My router still did not come back. Can you be more
specific about which chip shall be replaced and where I can find those
chips?
Thanks in advance
Hans-need your help urgently.
----- Original Message -----
From: "Ahmed Mamoor Amimi" <mamoor@ieee.org>
To: "Hans" <yyao@sympatico.ca>; <basel@cisco.com>
Cc: <ccielab@groupstudy.com>
Sent: Thursday, September 27, 2001 5:07 PM
Subject: RE: console not working
> Now it my turn to answer...
>
> This was the same prob. with my router that the last command that i give
was
> write erase and that was the last time i saw data on console. when i
reboot
> it, it normally blink every light but dont give anything on console. this
> happened to 3 routers of mind. I thougt it will be a software fault. I
tried
> everything ...hhmm!! i think there are about 12 to 13 software solutions
for
> the console to be corrected. but all failed.
> One day i was very fadup and open up my router case. in my hands there was
> a PROB. (dont ask me wat is a PROB). I investigated every chip on the
router
> that are of RS232 and check everyone and came to know that one chip was
not
> giving output but taking input. I just de-sold it and replace it with
other
> EIA/TIA232 chip.... and do u know what happened my router get alive again.
> WOW!!! that was my day.
> I was totally dishearted from doing my CCIE as 3 routers where dead. Now i
> can work on all of the three.
> The router rearly get dead but console make it dead. Its my advice not to
> extend custom made cable from the given size as those EIA/TIA232 chips are
> very sensitive. they can't bear load greater then 15V.
>
> hope this help!!
> -Mamoor
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Hans
> Sent: Monday, December 10, 2001 12:26 AM
> To: basel@cisco.com
> Cc: ccielab@groupstudy.com
> Subject: Re: console not working
>
>
> Hi Basel,
>
> I will have a try and let you know the result.
>
> Thanks,
>
> Hans
> ----- Original Message -----
> From: "Basel Tashkandi" <basel@cisco.com>
> To: "Hans" <yyao@sympatico.ca>
> Cc: <ccielab@groupstudy.com>
> Sent: Sunday, December 09, 2001 12:43 PM
> Subject: RE: console not working
>
>
> > Hi Hans,
> > I think if this is the case we need to do more investigation. try
> connecting
> > the 2 routers to a hub and do a debug for all ip packets and see what
> comes
> > out. Even better if you have a sniffer capture whats coming out of that
> > interface and lets see.
> >
> > regards
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Hans
> > Sent: 09 December 2001 12:23
> > To: Basel Tashkandi
> > Cc: ccielab@groupstudy.com
> > Subject: Re: console not working
> >
> >
> > Hi Basel,
> >
> > Thanks for your reply. I think the same as you did at first. However,
when
> I
> > checked problematic router, I found the LED of the ethernet port
connected
> > with cable kept flashing, that means the ethernet port is up. I also
> tried
> > to connect that ethernet port with my computer NIC, my the LED of my
> > computer' NIC is also green(up).
> >
> > Can you please help me out?
> >
> > Thanks,
> >
> > Hans
> >
> >
> > ----- Original Message -----
> > From: "Basel Tashkandi" <basel@tashkandi.com>
> > To: "Hans" <yyao@sympatico.ca>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Sunday, December 09, 2001 3:57 AM
> > Subject: Re: console not working
> >
> >
> > > Hi Hans,
> > > The reason for not seeing the router by CDP from the second router is
> > > because when you erased the configuration file the router interfaces
> > > default status is shut down. Hence you don't have configuration file
to
> > > change that it will remain on shut status.
> > >
> > > regards
> > > At 21:56 08/12/2001 -0500, Hans wrote:
> > > >Hi Basel,
> > > >
> > > >Thanks for your reply. I also think there must be something wrong
woth
> > the
> > > >console port. However, why I can see this problem router by using
show
> > cdp
> > > >neighbor on other working router? Is it because I reboot the router
> after
> > I
> > > >erase start?
> > > >
> > > >Thanks again,
> > > >
> > > >Hans
> > > >
> > > >----- Original Message -----
> > > >From: "Basel Tashkandi" <basel@tashkandi.com>
> > > >To: "Hans" <yyao@sympatico.ca>
> > > >Cc: <ccielab@groupstudy.com>
> > > >Sent: Saturday, December 08, 2001 8:41 PM
> > > >Subject: Re: console not working
> > > >
> > > >
> > > > > Hi Hans
> > > > > Try this link for several options of AutoInstall
> > > > >
> > >
> >
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/fun_
> > c
> > > >/fcprt1/fccfgtoo.htm#xtocid120104
> > > > >
> > > > > I believe your Console port is damaged you might want to check
with
> > the
> > > > > place you bought the router from for support or maintenance
> > > > >
> > > > > Thanks
> > > > > At 18:58 08/12/2001 -0500, Hans wrote:
> > > > > >All,
> > > > > >
> > > > > >Thanks for your reply. I can not access to the router either
> through
> > > >console
> > > > > >or through aux. I have tried to different com speed from 110 to
> > 115200
> > > >for
> > > > > >both console and aux. It did not work. I also have the ethernet
> port
> > > > > >connected to another Cisco router, I did show cdp neighbor on the
> > other
> > > > > >router, I can not find the problem router.
> > > > > >
> > > > > >Again the syndrome:
> > > > > >
> > > > > >The router works fine yesterday. Today, when I have it booted and
> > > >telneted
> > > > > >on it, everything seems to be fine. However when I try to
> connected
> > it
> > > > > >using the console port, nothing shows up on my screen. Therefore
I
> > > >telneted
> > > > > >onto it again and did erase start and reload, after that, I lost
> > > >everthing.
> > > > > >I tried different berak sequences, none of them is working.
> > > > > >
> > > > > >I keep power if off and on and tried the return key, nothing
shows
> up
> > on
> > > > > >console port. However, everytime I power it up, I can see a "p"
> using
> > the
> > > > > >aux port. I did the same thing to other working router, I saw an
> "o"
> > on
> > > >the
> > > > > >aux port.
> > > > > >
> > > > > >Hi Basel, can you please let me know how to do auto-install on
the
> > > >router?
> > > > > >It is a Cisco 2507 8M/8M.
> > > > > >
> > > > > >Thanks all for your help!
> > > > > >
> > > > > >Hans
> > > > > >
> > > > > >
> > > > > >
> > > > > >----- Original Message -----
> > > > > >From: "Basel Tashkandi" <basel@tashkandi.com>
> > > > > >To: "Phil" <ciscostudent1@yahoo.com.br>
> > > > > >Cc: "Hans" <yyao@sympatico.ca>; <ccielab@groupstudy.com>
> > > > > >Sent: Saturday, December 08, 2001 6:20 PM
> > > > > >Subject: Re: console not working
> > > > > >
> > > > > >
> > > > > > > when you press the return key do you get any kind of response
or
> > > >nothing
> > > > > >at
> > > > > > > all.ho
> > > > > > > If you do then you might want to try changing your com port
> speed
> > > > > > >
> > > > > > > If this doesn't work try the auto-install feature to put some
> > > > > >configuration
> > > > > > > on the router
> > > > > > >
> > > > > > > At 18:26 08/12/2001 -0300, Phil wrote:
> > > > > > > > Hans,
> > > > > > > >You can try to connect this router to another router via
> ethernet
> > or
> > > > > > > >serial and if the interfaces are not shutdown and cdp is
> running
> > > >you'll
> > > > > >be
> > > > > > > >able to see the router as a cdp neighbor.
> > > > > > > >
> > > > > > > > Hans <yyao@sympatico.ca> escreveu: Hi there,
> > > > > > > >
> > > > > > > >My console of Cisco 2507 router is not working(it is working
> fine
> > > > > > > >yesterday). When I power up the router, nothing shows up. I
> have
> > > >checked
> > > > > >the
> > > > > > > >console cable with other routers, it is working fine. I
connect
> > the
> > > > > >console
> > > > > > > >cable to the aux port when I power up the router, a "p"
> displayed
> > > >then
> > > > > > > >nothing shows up anymore. When I did the same thing to other
> > working
> > > > > >router,
> > > > > > > >"o" is displayed and then it enters into prompt mode. There
is
> > not ip
> > > > > > > >address assigned on any of the interfaces, so console/aux is
> the
> > only
> > > >way
> > > > > > > >for me to accesss the router.
> > > > > > > >
> > > > > > > >Can anyone please help me,
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >Thanks a million.
> > > > > > > >
> > > > > > > >Hans
> > > > > > > >---------------------------------
> > > > > > > >Yahoo! GeoCities
> > > > > > > >Tenha seu lugar na Web. Construa hoje mesmo sua home page no
> > Yahoo!
> > > > > > > >GeoCities. I facil e gratis!
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