[rancid] Searching for Half-duplex Interfaces

Discussion:

Pabon, Nestor

2008-01-11 20:31:47 UTC

First of all I want to thank the developers for such a great tool.

I need to discover in a network of 200+ routers, which ones have
FastEthernet interfaces; either 0/0 or 0/1 set to "Half-duplex".

Can someone help me script this query?

My objective is to investigate why they are set to Half-duplex, and then
change them to full or hard code them where appropriate.

Regards,

Nestor

Lance

2008-01-11 20:56:24 UTC

Permalink

use clogin and do a sho int for each interface. the look for half
somewhere in the output of the show interface.

-------- Original Message --------
Subject: [rancid] Searching for Half-duplex Interfaces
Date: Fri, January 11, 2008 1:31 pm
First of all I want to thank the developers for such a great tool.
I need to discover in a network of 200+ routers, which ones have
FastEthernet interfaces; either 0/0 or 0/1 set to "Half-duplex".
Can someone help me script this query?
My objective is to investigate why they are set to Half-duplex, and then
change them to full or hard code them where appropriate.
Regards,
Nestor<hr>_______________________________________________
Rancid-discuss mailing list
http://www.shrubbery.net/mailman/listinfo.cgi/rancid-discuss

Pabon, Nestor

2008-01-11 21:33:32 UTC

Permalink

I'm not sure I conveyed my goal correctly.

If I use clogin or log directly into the router I know I can query
issuing the following:

"sh interface | i Half-duplex"

But this will only return something like:

"Half-duplex, 10Mb/s, 100BaseTX/FX"

I rather do a:

"show int"

And have the output go to a file named

"show-duplex"

And then somehow get a report which will give the device name which had
an interface set to Half-duplex".

Hope this helps.

Regards,
Nestor

-----Original Message-----
From: Lance [mailto:***@gheek.net]
Sent: Friday, January 11, 2008 1:56 PM
To: Pabon, Nestor
Cc: rancid-***@shrubbery.net
Subject: RE: [rancid] Searching for Half-duplex Interfaces

use clogin and do a sho int for each interface. the look for half
somewhere in the output of the show interface.

Ed Ravin

2008-01-11 22:29:16 UTC

Permalink

Post by Pabon, Nestor
I'm not sure I conveyed my goal correctly.
If I use clogin or log directly into the router I know I can query
"sh interface | i Half-duplex"
"Half-duplex, 10Mb/s, 100BaseTX/FX"

But if you followed John's instructions (repeated below, with slight edits
for clarity), you would get something much better than that. Note the
regexp which will match things like:

FastEthernet0/0/0 is up, line protocol is up

So you'll see the interface names, and then their duplex settings if
they are Ethernet-based.

--------

for rtr in ...list...
do
clogin -c 'show interfaces | inc (line protocol|duplex|speed)' $rtr >>output.file 2>&1
done

Pabon, Nestor

2008-01-11 23:19:42 UTC

Permalink

So the list of routers is in:

/opt/rancid/data/mpls-routers

Does this mean that

"for rtr in ...list..."

Becomes

"for rtr in /opt/rancid/data/mpls-routers/router.db"

Regards,
Nestor

-----Original Message-----
From: Ed Ravin [mailto:***@panix.com]
Sent: Friday, January 11, 2008 3:29 PM
To: Pabon, Nestor
Cc: rancid-***@shrubbery.net
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces

But if you followed John's instructions (repeated below, with slight
edits
for clarity), you would get something much better than that. Note the
regexp which will match things like:

FastEthernet0/0/0 is up, line protocol is up

So you'll see the interface names, and then their duplex settings if
they are Ethernet-based.

--------

for rtr in ...list...
do
clogin -c 'show interfaces | inc (line protocol|duplex|speed)'
$rtr >>output.file 2>&1
done

Mike Ashcraft

2008-01-11 23:28:21 UTC

Permalink

Close. You need to trim the data in router.db

for rtr in $(cat router.db | cut -d: -f1); do clogin $rtr ... ; done

Mike

-----Original Message-----
From: rancid-discuss-***@shrubbery.net
[mailto:rancid-discuss-***@shrubbery.net] On Behalf Of Pabon, Nestor
Sent: Friday, January 11, 2008 4:20 PM
To: Ed Ravin
Cc: rancid-***@shrubbery.net
Subject: [rancid] Re: Searching for Half-duplex Interfaces

So the list of routers is in:

/opt/rancid/data/mpls-routers

Does this mean that

"for rtr in ...list..."

Becomes

"for rtr in /opt/rancid/data/mpls-routers/router.db"

Regards,
Nestor

-----Original Message-----
From: Ed Ravin [mailto:***@panix.com]
Sent: Friday, January 11, 2008 3:29 PM
To: Pabon, Nestor
Cc: rancid-***@shrubbery.net
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces

But if you followed John's instructions (repeated below, with slight
edits
for clarity), you would get something much better than that. Note the
regexp which will match things like:

FastEthernet0/0/0 is up, line protocol is up

So you'll see the interface names, and then their duplex settings if
they are Ethernet-based.

--------

for rtr in ...list...
do
clogin -c 'show interfaces | inc (line protocol|duplex|speed)'
$rtr >>output.file 2>&1
done

Chris Moody

2008-01-11 23:42:44 UTC

Permalink

You can use the shell routine I gave you.

./rancid-config-apply.sh

Put the commands you want to issue to the device into the location
defined in the COMMANDSFILEPATH variable...and then just answer the prompts.

ex>
***@fittipaldi ~ $ cat command-scripts/interface-duplex
show interfaces | inc (line protocol|duplex|speed)

#####
***@fittipaldi ~ $ ./scripts/bash/rancid-config-apply.sh
=====[ Rancid Config Apply Script ]=====

Please enter the nodegroup:
mpls-routers
Please enter name of commands-file:
interface-duplex
...
#####

and the routine will take off from there...only logging into devices
that are flagged as "up" in rancid.

Cheers,
-Chris

Post by Pabon, Nestor
/opt/rancid/data/mpls-routers
Does this mean that
"for rtr in ...list..."
Becomes
"for rtr in /opt/rancid/data/mpls-routers/router.db"
Regards,
Nestor
-----Original Message-----
Sent: Friday, January 11, 2008 3:29 PM
To: Pabon, Nestor
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces

But if you followed John's instructions (repeated below, with slight edits
for clarity), you would get something much better than that. Note the
FastEthernet0/0/0 is up, line protocol is up
So you'll see the interface names, and then their duplex settings if
they are Ethernet-based.
--------
for rtr in ...list...
do
clogin -c 'show interfaces | inc (line protocol|duplex|speed)'
$rtr >>output.file 2>&1
done
_______________________________________________
Rancid-discuss mailing list
http://www.shrubbery.net/mailman/listinfo.cgi/rancid-discuss

Pabon, Nestor

2008-01-11 23:51:39 UTC

Permalink

Hi Chris;

I'm trying to incorporate your script, and it is working. The part I'm
lost in is how end up with a file containing the output.

Regards,
Nestor

-----Original Message-----
From: Chris Moody [mailto:***@qualcomm.com]
Sent: Friday, January 11, 2008 4:43 PM
To: Pabon, Nestor
Cc: Ed Ravin; rancid-***@shrubbery.net
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces

You can use the shell routine I gave you.

./rancid-config-apply.sh

Put the commands you want to issue to the device into the location
defined in the COMMANDSFILEPATH variable...and then just answer the
prompts.

ex>
***@fittipaldi ~ $ cat command-scripts/interface-duplex
show interfaces | inc (line protocol|duplex|speed)

#####
***@fittipaldi ~ $ ./scripts/bash/rancid-config-apply.sh
=====[ Rancid Config Apply Script ]=====

Please enter the nodegroup:
mpls-routers
Please enter name of commands-file:
interface-duplex
...
#####

and the routine will take off from there...only logging into devices
that are flagged as "up" in rancid.

Cheers,
-Chris

Chris Moody

2008-01-11 23:57:23 UTC

Permalink

Bash shell scripting 101. [ http://tldp.org/LDP/abs/html/ ]
Edit 3 lines of the code.

Insert this after the "read COMMANDSFILE" line:
---
echo "Please enter the name of the file you want to store this data in:"
read OUTPUTFILE
---

and then edit this line:
---
$CLOGINPATH -f $CREDENTIALS -x $COMMANDSFILEPATH/$COMMANDSFILE $i
---

to look like this:
---
$CLOGINPATH -f $CREDENTIALS -x $COMMANDSFILEPATH/$COMMANDSFILE $i >>
$OUTPUTFILE
---

For anyone else wondering what I'm referring to, I wrote a shell wrapper
routine for Nestor a few weeks back. It's only like a 30-second quick
rough draft...

[ http://www.siliconhotrod.com/files/rancid-config-apply.sh ]

Cheers,
-Chris

Post by Pabon, Nestor
Hi Chris;
I'm trying to incorporate your script, and it is working. The part I'm
lost in is how end up with a file containing the output.
Regards,
Nestor
-----Original Message-----
Sent: Friday, January 11, 2008 4:43 PM
To: Pabon, Nestor
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces
You can use the shell routine I gave you.
./rancid-config-apply.sh
Put the commands you want to issue to the device into the location
defined in the COMMANDSFILEPATH variable...and then just answer the prompts.
ex>
show interfaces | inc (line protocol|duplex|speed)
#####
=====[ Rancid Config Apply Script ]=====
mpls-routers
interface-duplex
...
#####
and the routine will take off from there...only logging into devices
that are flagged as "up" in rancid.
Cheers,
-Chris

Pabon, Nestor

2008-01-12 00:37:52 UTC

Permalink

Worked like a charm.

Thank you.

Regards,
Nestor

-----Original Message-----
From: Chris Moody [mailto:***@qualcomm.com]
Sent: Friday, January 11, 2008 4:57 PM
To: Pabon, Nestor
Cc: Ed Ravin; rancid-***@shrubbery.net
Subject: Re: [rancid] Re: Searching for Half-duplex Interfaces

Bash shell scripting 101. [ http://tldp.org/LDP/abs/html/ ]
Edit 3 lines of the code.

Insert this after the "read COMMANDSFILE" line:
---
echo "Please enter the name of the file you want to store this data in:"
read OUTPUTFILE
---

and then edit this line:
---
$CLOGINPATH -f $CREDENTIALS -x $COMMANDSFILEPATH/$COMMANDSFILE $i
---

to look like this:
---
$CLOGINPATH -f $CREDENTIALS -x $COMMANDSFILEPATH/$COMMANDSFILE $i >>
$OUTPUTFILE
---

For anyone else wondering what I'm referring to, I wrote a shell wrapper

routine for Nestor a few weeks back. It's only like a 30-second quick
rough draft...

[ http://www.siliconhotrod.com/files/rancid-config-apply.sh ]

Cheers,
-Chris

john heasley

2008-01-11 21:29:39 UTC

Permalink

Post by Pabon, Nestor
First of all I want to thank the developers for such a great tool.
I need to discover in a network of 200+ routers, which ones have
FastEthernet interfaces; either 0/0 or 0/1 set to "Half-duplex".
Can someone help me script this query?

an snmpwalk of interfaces seems like a better approach. however...

for rtr in ...list...; do
clogin -c 'show interfaces | in (line protocol|duplex|speed)' $rtr \

Post by Pabon, Nestor

output 2>&1

done

or xargs or whatever your fancy. then perl/awk/human/whatever you like to
exclude the uninteresting stuff from the output.

Pabon, Nestor

2008-01-11 22:02:22 UTC

Permalink

This looks interesting.

Got to figure out how to script it.

-----Original Message-----
From: john heasley [mailto:***@shrubbery.net]
Sent: Friday, January 11, 2008 2:30 PM
To: Pabon, Nestor
Cc: rancid-***@shrubbery.net
Subject: Re: [rancid] Searching for Half-duplex Interfaces

an snmpwalk of interfaces seems like a better approach. however...

for rtr in ...list...; do
clogin -c 'show interfaces | in (line protocol|duplex|speed)'
$rtr \

Post by Pabon, Nestor

output 2>&1

done

or xargs or whatever your fancy. then perl/awk/human/whatever you like
to
exclude the uninteresting stuff from the output.