Mailing List Archive: Multichassis Multilink PPP (SGBP)

Multichassis Multilink PPP (SGBP) - Help Needed.

Mar 2, 2004, 5:25 PM

Post #1 of 5 (1152 views)

Hello,
I'm hoping someone out there can assist us with a problem we've been having
please...

We currently have 2x Cisco 7200s acting as LNS' for terminating end-user
dial-up PPP sessions (56k/64k), we also have multilinking enabled and
functioning on both boxes in their own right but seem unable to get the two
boxes talking to one another using SGBP so that multilink will function
across both/multiple chassis.

vpdn multihop is enabled on both boxes, aswell as a stack-group
username/password and an sgbp group with members configured. - Is there
anything we are missing here?

debugging sgbp (hellos/events/messages/errors/dial-bids) on both boxes
provides virtually no output when a multilink (ISDN - 128k) calls comes
in....other than the Hellos/Keepalives being sent and acknowledged between
the sgbp group members.

When each call/channel from the dial-in client comes in and lands on a
seperate chassis they form their own multilink bundle, it's asthough sgbp is
not functioning at all even though it's configured and a show sgbp indicates
that it is active on both chassis...

Any suggestions would be greatly appreciated as i'm starting to run out of
ideas here.

Thanks in advance.

Regards,
Chris Atkinson

Re: Multichassis Multilink PPP (SGBP) - Help Needed. [ In reply to ]

akko at westnet

Mar 2, 2004, 5:56 PM

Post #2 of 5 (1150 views)

Permalink

Hi Dennis,

Currently:
IOS Version: 12.3(3)B (c7200-is-mz.123-3.B.bin) on both chassis.

Thanks.

Regards,
Chris Atkinson

----- Original Message -----
From: "Dennis Peng" <dpeng@cisco.com>
To: "Chris Atkinson" <akko@westnet.com.au>
Sent: Wednesday, March 03, 2004 8:36 AM
Subject: Re: [cisco-nas] Multichassis Multilink PPP (SGBP) - Help Needed.

> What version are you running?
>
> Dennis
>
> Chris Atkinson [akko@westnet.com.au] wrote:
> > Hello,
> > I'm hoping someone out there can assist us with a problem we've been
having
> > please...
> >
> > We currently have 2x Cisco 7200s acting as LNS' for terminating end-user
> > dial-up PPP sessions (56k/64k), we also have multilinking enabled and
> > functioning on both boxes in their own right but seem unable to get the
two
> > boxes talking to one another using SGBP so that multilink will function
> > across both/multiple chassis.
> >
> > vpdn multihop is enabled on both boxes, aswell as a stack-group
> > username/password and an sgbp group with members configured. - Is there
> > anything we are missing here?
> >
> > debugging sgbp (hellos/events/messages/errors/dial-bids) on both boxes
> > provides virtually no output when a multilink (ISDN - 128k) calls comes
> > in....other than the Hellos/Keepalives being sent and acknowledged
between
> > the sgbp group members.
> >
> > When each call/channel from the dial-in client comes in and lands on a
> > seperate chassis they form their own multilink bundle, it's asthough
sgbp is
> > not functioning at all even though it's configured and a show sgbp
indicates
> > that it is active on both chassis...
> >
> > Any suggestions would be greatly appreciated as i'm starting to run out
of
> > ideas here.
> >
> > Thanks in advance.
> >
> > Regards,
> > Chris Atkinson
> >
> > _______________________________________________
> > cisco-nas mailing list
> > cisco-nas@puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nas

Re: Multichassis Multilink PPP (SGBP) - Help Needed. [ In reply to ]

dpeng at cisco

Mar 2, 2004, 6:02 PM

Post #3 of 5 (1160 views)

Permalink

Thanks. You are probably running into CSCed81264. Workaround proposed
is to configure "sgbp ppp-forward".

Dennis

Chris Atkinson [akko@westnet.com.au] wrote:
> Hi Dennis,
>
> Currently:
> IOS Version: 12.3(3)B (c7200-is-mz.123-3.B.bin) on both chassis.
>
> Thanks.
>
> Regards,
> Chris Atkinson
>
> ----- Original Message -----
> From: "Dennis Peng" <dpeng@cisco.com>
> To: "Chris Atkinson" <akko@westnet.com.au>
> Sent: Wednesday, March 03, 2004 8:36 AM
> Subject: Re: [cisco-nas] Multichassis Multilink PPP (SGBP) - Help Needed.
>
>
> > What version are you running?
> >
> > Dennis
> >
> > Chris Atkinson [akko@westnet.com.au] wrote:
> > > Hello,
> > > I'm hoping someone out there can assist us with a problem we've been
> having
> > > please...
> > >
> > > We currently have 2x Cisco 7200s acting as LNS' for terminating end-user
> > > dial-up PPP sessions (56k/64k), we also have multilinking enabled and
> > > functioning on both boxes in their own right but seem unable to get the
> two
> > > boxes talking to one another using SGBP so that multilink will function
> > > across both/multiple chassis.
> > >
> > > vpdn multihop is enabled on both boxes, aswell as a stack-group
> > > username/password and an sgbp group with members configured. - Is there
> > > anything we are missing here?
> > >
> > > debugging sgbp (hellos/events/messages/errors/dial-bids) on both boxes
> > > provides virtually no output when a multilink (ISDN - 128k) calls comes
> > > in....other than the Hellos/Keepalives being sent and acknowledged
> between
> > > the sgbp group members.
> > >
> > > When each call/channel from the dial-in client comes in and lands on a
> > > seperate chassis they form their own multilink bundle, it's asthough
> sgbp is
> > > not functioning at all even though it's configured and a show sgbp
> indicates
> > > that it is active on both chassis...
> > >
> > > Any suggestions would be greatly appreciated as i'm starting to run out
> of
> > > ideas here.
> > >
> > > Thanks in advance.
> > >
> > > Regards,
> > > Chris Atkinson
> > >
> > > _______________________________________________
> > > cisco-nas mailing list
> > > cisco-nas@puck.nether.net
> > > https://puck.nether.net/mailman/listinfo/cisco-nas
>
> _______________________________________________
> cisco-nas mailing list
> cisco-nas@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas

Re: Multichassis Multilink PPP (SGBP) - Help Needed. [ In reply to ]

radek.jirout at col

Mar 3, 2004, 1:18 AM

Post #4 of 5 (1158 views)

Permalink

Have you
sgbp member "real hostname of another box?" and sgbp source-ip?
try "sho sgbp" are members active?

/radek

On Wed, 3 Mar 2004, Chris Atkinson wrote:

> Hello,
> I'm hoping someone out there can assist us with a problem we've been having
> please...
>
> We currently have 2x Cisco 7200s acting as LNS' for terminating end-user
> dial-up PPP sessions (56k/64k), we also have multilinking enabled and
> functioning on both boxes in their own right but seem unable to get the two
> boxes talking to one another using SGBP so that multilink will function
> across both/multiple chassis.
>
> vpdn multihop is enabled on both boxes, aswell as a stack-group
> username/password and an sgbp group with members configured. - Is there
> anything we are missing here?
>
> debugging sgbp (hellos/events/messages/errors/dial-bids) on both boxes
> provides virtually no output when a multilink (ISDN - 128k) calls comes
> in....other than the Hellos/Keepalives being sent and acknowledged between
> the sgbp group members.
>
> When each call/channel from the dial-in client comes in and lands on a
> seperate chassis they form their own multilink bundle, it's asthough sgbp is
> not functioning at all even though it's configured and a show sgbp indicates
> that it is active on both chassis...
>
> Any suggestions would be greatly appreciated as i'm starting to run out of
> ideas here.
>
> Thanks in advance.
>
> Regards,
> Chris Atkinson
>
> _______________________________________________
> cisco-nas mailing list
> cisco-nas@puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas
>

Re: Multichassis Multilink PPP (SGBP) - Help Needed. [ In reply to ]

akko at westnet

Mar 3, 2004, 5:39 PM

Post #5 of 5 (1151 views)

Permalink

Hi,
The hostnames & source-ip addresses of all stack members are correct.

As outlined previously a "sho sgbp" indicates that all group members are
active.

At present we have a temporary work-around in place that is working for our
dialin clients but isn't ideal by any means.

We are going with Dennis in that we are now treating CSCed81264 as the
likely cause of our problem.
(An IOS upgrade will hopefully prove this theory to be correct in time)

Thanks.

Regards,
Chris Atkinson

----- Original Message -----
From: "Radek Jirout" <radek.jirout@col.cz>
To: "Chris Atkinson" <akko@westnet.com.au>
Cc: <cisco-nas@puck.nether.net>
Sent: Wednesday, March 03, 2004 4:18 PM
Subject: Re: [cisco-nas] Multichassis Multilink PPP (SGBP) - Help Needed.

> Have you
> sgbp member "real hostname of another box?" and sgbp source-ip?
> try "sho sgbp" are members active?
>
> /radek
>
>
> On Wed, 3 Mar 2004, Chris Atkinson wrote:
>
> > Hello,
> > I'm hoping someone out there can assist us with a problem we've been
having
> > please...
> >
> > We currently have 2x Cisco 7200s acting as LNS' for terminating end-user
> > dial-up PPP sessions (56k/64k), we also have multilinking enabled and
> > functioning on both boxes in their own right but seem unable to get the
two
> > boxes talking to one another using SGBP so that multilink will function
> > across both/multiple chassis.
> >
> > vpdn multihop is enabled on both boxes, aswell as a stack-group
> > username/password and an sgbp group with members configured. - Is there
> > anything we are missing here?
> >
> > debugging sgbp (hellos/events/messages/errors/dial-bids) on both boxes
> > provides virtually no output when a multilink (ISDN - 128k) calls comes
> > in....other than the Hellos/Keepalives being sent and acknowledged
between
> > the sgbp group members.
> >
> > When each call/channel from the dial-in client comes in and lands on a
> > seperate chassis they form their own multilink bundle, it's asthough
sgbp is
> > not functioning at all even though it's configured and a show sgbp
indicates
> > that it is active on both chassis...
> >
> > Any suggestions would be greatly appreciated as i'm starting to run out
of
> > ideas here.
> >
> > Thanks in advance.
> >
> > Regards,
> > Chris Atkinson
> >
> > _______________________________________________
> > cisco-nas mailing list
> > cisco-nas@puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nas
> >