Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Patrick M. Hausen]

Hi all,

> Am 19.05.2018 um 18:52 schrieb Lee :
> It's been several years since I've seen a 6500, but I doubt things
> have changed.  There's two boot registers on the 6500 - the switch
> processor and the route processor.  The switch boots up first and then
> hands off to the route processor, so under normal circumstances
>  show boot
> shows the boot variables for the route processor & [maybe not the
> correct syntax]
>  remote command switch show boot
> shows the boot variables for the switch processor.
> 
> So if the SP confreg = 0x0 when the box reboots it stays in rommon
> even if the RP confreg = 0x2102

Thanks for reminding me that this platform acts a bit schizophrenic at times ;-)
And of course you nailed it.

Standby chassis switch processor:
Configuration register is 0x2100 (will be 0x2102 at next reload)

I think it's pretty odd that a controlled reload is required to save the new 
setting.
We did that in a maintenance window and now all 4 registers of our VSS  are
set to 0x2102.

Thanks
Patrick
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Andrew Clark]

Many wrenches in the toolbox here but don’t underestimate the utility of an 
older laptop running your favorite UNIX-like OS as console server (and more) in 
a smaller POP.  You get a lot of flexibility and built in battery backup. 
Unless it’s forbidden by your respective powers that be... 
You might have to put it in a locked rack box and call it an “appliance”

> On May 19, 2018, at 11:00 AM, cisco-nsp-requ...@puck.nether.net wrote:
> 
> Re: line con 0 as terminal server on Cat6500?
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Erik Sundberg]

I think you can only do the reverse console from an aux port

We put console servers, OOB management network, and managed power strip at 
every pop for this reason... The small investment has saved us a lot of 
time and money.

Perle IOLAN SCS48
Avocent
Opengear
Digi
Old Cisco Router

-Original Message-
From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Mailing 
Lists
Sent: Friday, May 18, 2018 6:14 AM
To: Cisco Network Service Providers <cisco-nsp@puck.nether.net>
Subject: Re: [c-nsp] line con 0 as terminal server on Cat6500?

 Airconsole Mini could work for this?

https://www.get-console.com/shop/en/airconsole-mini-20/
112-airconsole-20-mini.html

We use the 8 port variant and they work well enough so far.


On 18 May 2018 at 12:03, Aaron Gould <aar...@gvtc.com> wrote:

> I've actually taken out a little 2600 just to act as a 1-port terminal
> server for this exact purpose
>
> (maybe you can even use an old 2500)
>
> Aaron
>
> > On May 18, 2018, at 6:00 AM, Aaron Gould <aar...@gvtc.com> wrote:
> >
> > I'm not sure if you can use a console port for connecting to another
> router's console port , but you can use the auxiliary (aux) port to do
> that.  I've done it many times
> >
> > Aaron
> >
> >> On May 18, 2018, at 1:55 AM, Patrick M. Hausen <hau...@punkt.de> wrote:
> >>
> >> Hi all,
> >>
> >> last weekend one switch in our VSS pair failed. Redundancy/VSS did
> >> work and we kept our connectivity besides a couple of hosts that
> >> only have a single uplink and were connected to that particular
> >> chassis.
> >>
> >> When I came to the data centre I found the failed chassis in rommon.
> >> A simple "boot" command restored everything to working order.
> >>
> >> Now to spare me that drive in case that happens again - is it
> >> possible to use the console port of a working Catalyst 6500 to act
> >> as a terminal server for the other one? We have quite a lot of
> >> spare rollover cables
> ;-)
> >>
> >> I found these instructions but I think I'm missing something:
> >> https://www.cisco.com/c/en/us/support/docs/dial-access/
> asynchronous-connections/5466-comm-server.html
> >>
> >> ip host other 2000 1.2.3.4
> >>
> >> Core2#telnet 1.2.3.4 2000
> >> Trying 1.2.3.4, 2000 ...
> >> % Connection refused by remote host
> >>
> >> I used the real IP address of looppback0, of course.
> >>
> >>
> >> Side note/question: any idea what could cause a Cat6500 VS-S720-10G
> >> to fail, reset (I can understand *that*) and then not boot into IOS
> >> and
> stay
> >> in rommon?
> >>
> >> Standby BOOT variable = sup-bootdisk:s72033-
> adventerprisek9_wan-mz.122-33.SXJ10.bin,1;disk0:s72033-
> adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
> >> Standby Configuration register is 0x2102
> >>
> >> Core2#dir slavesup-bootdisk:
> >> ...
> >> s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin
> >>
> >>
> >> Thanks!
> >> Patrick
> >> --
> >> punkt.de GmbHInternet - Dienstleistungen - Beratung
> >> Kaiserallee 13aTel.: 0721 9109-0 Fax: -100
> >> 76133 Karlsruhei...@punkt.dehttp://punkt.de
> >> AG Mannheim 108285Gf: Juergen Egeling
> >>
> >> ___
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> >> https://puck.nether.net/mailman/listinfo/cisco-nsp
> >> archive at http://puck.nether.net/pipermail/cisco-nsp/
> >
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Mailing Lists]

 Airconsole Mini could work for this?

https://www.get-console.com/shop/en/airconsole-mini-20/
112-airconsole-20-mini.html

We use the 8 port variant and they work well enough so far.


On 18 May 2018 at 12:03, Aaron Gould  wrote:

> I've actually taken out a little 2600 just to act as a 1-port terminal
> server for this exact purpose
>
> (maybe you can even use an old 2500)
>
> Aaron
>
> > On May 18, 2018, at 6:00 AM, Aaron Gould  wrote:
> >
> > I'm not sure if you can use a console port for connecting to another
> router's console port , but you can use the auxiliary (aux) port to do
> that.  I've done it many times
> >
> > Aaron
> >
> >> On May 18, 2018, at 1:55 AM, Patrick M. Hausen  wrote:
> >>
> >> Hi all,
> >>
> >> last weekend one switch in our VSS pair failed. Redundancy/VSS
> >> did work and we kept our connectivity besides a couple of hosts
> >> that only have a single uplink and were connected to that particular
> >> chassis.
> >>
> >> When I came to the data centre I found the failed chassis in rommon.
> >> A simple "boot" command restored everything to working order.
> >>
> >> Now to spare me that drive in case that happens again - is it possible
> >> to use the console port of a working Catalyst 6500 to act as a terminal
> >> server for the other one? We have quite a lot of spare rollover cables
> ;-)
> >>
> >> I found these instructions but I think I'm missing something:
> >> https://www.cisco.com/c/en/us/support/docs/dial-access/
> asynchronous-connections/5466-comm-server.html
> >>
> >> ip host other 2000 1.2.3.4
> >>
> >> Core2#telnet 1.2.3.4 2000
> >> Trying 1.2.3.4, 2000 ...
> >> % Connection refused by remote host
> >>
> >> I used the real IP address of looppback0, of course.
> >>
> >>
> >> Side note/question: any idea what could cause a Cat6500 VS-S720-10G
> >> to fail, reset (I can understand *that*) and then not boot into IOS and
> stay
> >> in rommon?
> >>
> >> Standby BOOT variable = sup-bootdisk:s72033-
> adventerprisek9_wan-mz.122-33.SXJ10.bin,1;disk0:s72033-
> adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
> >> Standby Configuration register is 0x2102
> >>
> >> Core2#dir slavesup-bootdisk:
> >> ...
> >> s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin
> >>
> >>
> >> Thanks!
> >> Patrick
> >> --
> >> punkt.de GmbHInternet - Dienstleistungen - Beratung
> >> Kaiserallee 13aTel.: 0721 9109-0 Fax: -100
> >> 76133 Karlsruhei...@punkt.dehttp://punkt.de
> >> AG Mannheim 108285Gf: Juergen Egeling
> >>
> >> ___
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> >> https://puck.nether.net/mailman/listinfo/cisco-nsp
> >> archive at http://puck.nether.net/pipermail/cisco-nsp/
> >
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Aaron Gould]

I've actually taken out a little 2600 just to act as a 1-port terminal server 
for this exact purpose 

(maybe you can even use an old 2500) 

Aaron

> On May 18, 2018, at 6:00 AM, Aaron Gould  wrote:
> 
> I'm not sure if you can use a console port for connecting to another router's 
> console port , but you can use the auxiliary (aux) port to do that.  I've 
> done it many times
> 
> Aaron
> 
>> On May 18, 2018, at 1:55 AM, Patrick M. Hausen  wrote:
>> 
>> Hi all,
>> 
>> last weekend one switch in our VSS pair failed. Redundancy/VSS
>> did work and we kept our connectivity besides a couple of hosts
>> that only have a single uplink and were connected to that particular
>> chassis.
>> 
>> When I came to the data centre I found the failed chassis in rommon.
>> A simple "boot" command restored everything to working order.
>> 
>> Now to spare me that drive in case that happens again - is it possible
>> to use the console port of a working Catalyst 6500 to act as a terminal
>> server for the other one? We have quite a lot of spare rollover cables ;-)
>> 
>> I found these instructions but I think I'm missing something:
>> https://www.cisco.com/c/en/us/support/docs/dial-access/asynchronous-connections/5466-comm-server.html
>> 
>> ip host other 2000 1.2.3.4
>> 
>> Core2#telnet 1.2.3.4 2000
>> Trying 1.2.3.4, 2000 ... 
>> % Connection refused by remote host
>> 
>> I used the real IP address of looppback0, of course.
>> 
>> 
>> Side note/question: any idea what could cause a Cat6500 VS-S720-10G
>> to fail, reset (I can understand *that*) and then not boot into IOS and stay
>> in rommon?
>> 
>> Standby BOOT variable = 
>> sup-bootdisk:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;disk0:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
>> Standby Configuration register is 0x2102 
>> 
>> Core2#dir slavesup-bootdisk:
>> ...
>> s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin
>> 
>> 
>> Thanks!
>> Patrick
>> -- 
>> punkt.de GmbHInternet - Dienstleistungen - Beratung
>> Kaiserallee 13aTel.: 0721 9109-0 Fax: -100
>> 76133 Karlsruhei...@punkt.dehttp://punkt.de
>> AG Mannheim 108285Gf: Juergen Egeling
>> 
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>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>> archive at http://puck.nether.net/pipermail/cisco-nsp/
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Aaron Gould]

I'm not sure if you can use a console port for connecting to another router's 
console port , but you can use the auxiliary (aux) port to do that.  I've done 
it many times

Aaron

> On May 18, 2018, at 1:55 AM, Patrick M. Hausen  wrote:
> 
> Hi all,
> 
> last weekend one switch in our VSS pair failed. Redundancy/VSS
> did work and we kept our connectivity besides a couple of hosts
> that only have a single uplink and were connected to that particular
> chassis.
> 
> When I came to the data centre I found the failed chassis in rommon.
> A simple "boot" command restored everything to working order.
> 
> Now to spare me that drive in case that happens again - is it possible
> to use the console port of a working Catalyst 6500 to act as a terminal
> server for the other one? We have quite a lot of spare rollover cables ;-)
> 
> I found these instructions but I think I'm missing something:
> https://www.cisco.com/c/en/us/support/docs/dial-access/asynchronous-connections/5466-comm-server.html
> 
> ip host other 2000 1.2.3.4
> 
> Core2#telnet 1.2.3.4 2000
> Trying 1.2.3.4, 2000 ... 
> % Connection refused by remote host
> 
> I used the real IP address of looppback0, of course.
> 
> 
> Side note/question: any idea what could cause a Cat6500 VS-S720-10G
> to fail, reset (I can understand *that*) and then not boot into IOS and stay
> in rommon?
> 
> Standby BOOT variable = 
> sup-bootdisk:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;disk0:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
> Standby Configuration register is 0x2102 
> 
> Core2#dir slavesup-bootdisk:
> ...
> s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin
> 
> 
> Thanks!
> Patrick
> -- 
> punkt.de GmbHInternet - Dienstleistungen - Beratung
> Kaiserallee 13aTel.: 0721 9109-0 Fax: -100
> 76133 Karlsruhei...@punkt.dehttp://punkt.de
> AG Mannheim 108285Gf: Juergen Egeling
> 
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[joshd]

I'm 99.% positive there is no way to make an outbound connection from a
console port.  It's been a while since I've worked on that stuff though.


On Fri, May 18, 2018 at 2:04 AM, Patrick M. Hausen  wrote:

> Hi!
>
> > Am 18.05.2018 um 09:00 schrieb joshd :
> > If the good cat6500 had an aux port, you could go from aux->con of the
> bad switchbut I don't think cat6500s have an aux port.
>
> Precisely - the VS-S720-10G doesn't have an aux port.
> The question is if I can use the con port in the same fashion and
> if yes, how?
>
> Patrick
> --
> punkt.de GmbH   Internet - Dienstleistungen - Beratung
> Kaiserallee 13a Tel.: 0721 9109-0 Fax: -100
> 76133 Karlsruhe i...@punkt.de   http://punkt.de
> AG Mannheim 108285  Gf: Juergen Egeling
>
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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[Patrick M. Hausen]

Hi!

> Am 18.05.2018 um 09:00 schrieb joshd :
> If the good cat6500 had an aux port, you could go from aux->con of the bad 
> switchbut I don't think cat6500s have an aux port.

Precisely - the VS-S720-10G doesn't have an aux port.
The question is if I can use the con port in the same fashion and
if yes, how?

Patrick
-- 
punkt.de GmbH   Internet - Dienstleistungen - Beratung
Kaiserallee 13a Tel.: 0721 9109-0 Fax: -100
76133 Karlsruhe i...@punkt.de   http://punkt.de
AG Mannheim 108285  Gf: Juergen Egeling

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Re: [c-nsp] line con 0 as terminal server on Cat6500?

[joshd]

If the good cat6500 had an aux port, you could go from aux->con of the bad
switchbut I don't think cat6500s have an aux port.

At a glance this page looks right:
http://ciscofaq.blogspot.com/2005/05/how-to-i-reverse-telnet-out-my-aux.html


On Fri, May 18, 2018 at 1:55 AM, Patrick M. Hausen  wrote:

> Hi all,
>
> last weekend one switch in our VSS pair failed. Redundancy/VSS
> did work and we kept our connectivity besides a couple of hosts
> that only have a single uplink and were connected to that particular
> chassis.
>
> When I came to the data centre I found the failed chassis in rommon.
> A simple "boot" command restored everything to working order.
>
> Now to spare me that drive in case that happens again - is it possible
> to use the console port of a working Catalyst 6500 to act as a terminal
> server for the other one? We have quite a lot of spare rollover cables ;-)
>
> I found these instructions but I think I'm missing something:
> https://www.cisco.com/c/en/us/support/docs/dial-access/
> asynchronous-connections/5466-comm-server.html
>
> ip host other 2000 1.2.3.4
>
> Core2#telnet 1.2.3.4 2000
> Trying 1.2.3.4, 2000 ...
> % Connection refused by remote host
>
> I used the real IP address of looppback0, of course.
>
>
> Side note/question: any idea what could cause a Cat6500 VS-S720-10G
> to fail, reset (I can understand *that*) and then not boot into IOS and
> stay
> in rommon?
>
> Standby BOOT variable = sup-bootdisk:s72033-adventerprisek9_wan-mz.122-33.
> SXJ10.bin,1;disk0:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
> Standby Configuration register is 0x2102
>
> Core2#dir slavesup-bootdisk:
> ...
> s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin
>
>
> Thanks!
> Patrick
> --
> punkt.de GmbH   Internet - Dienstleistungen - Beratung
> Kaiserallee 13a Tel.: 0721 9109-0 Fax: -100
> 76133 Karlsruhe i...@punkt.de   http://punkt.de
> AG Mannheim 108285  Gf: Juergen Egeling
>
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[c-nsp] line con 0 as terminal server on Cat6500?

[Patrick M. Hausen]

Hi all,

last weekend one switch in our VSS pair failed. Redundancy/VSS
did work and we kept our connectivity besides a couple of hosts
that only have a single uplink and were connected to that particular
chassis.

When I came to the data centre I found the failed chassis in rommon.
A simple "boot" command restored everything to working order.

Now to spare me that drive in case that happens again - is it possible
to use the console port of a working Catalyst 6500 to act as a terminal
server for the other one? We have quite a lot of spare rollover cables ;-)

I found these instructions but I think I'm missing something:
https://www.cisco.com/c/en/us/support/docs/dial-access/asynchronous-connections/5466-comm-server.html

ip host other 2000 1.2.3.4

Core2#telnet 1.2.3.4 2000
Trying 1.2.3.4, 2000 ... 
% Connection refused by remote host

I used the real IP address of looppback0, of course.


Side note/question: any idea what could cause a Cat6500 VS-S720-10G
to fail, reset (I can understand *that*) and then not boot into IOS and stay
in rommon?

Standby BOOT variable = 
sup-bootdisk:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;disk0:s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin,1;
Standby Configuration register is 0x2102 

Core2#dir slavesup-bootdisk:
...
s72033-adventerprisek9_wan-mz.122-33.SXJ10.bin


Thanks!
Patrick
-- 
punkt.de GmbH   Internet - Dienstleistungen - Beratung
Kaiserallee 13a Tel.: 0721 9109-0 Fax: -100
76133 Karlsruhe i...@punkt.de   http://punkt.de
AG Mannheim 108285  Gf: Juergen Egeling

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