[nsp] whats bgp scan all about

[Stephen J. Wilcox]

Thanks for the quick reply..

> There is not too much you can do about it. Just check if there is route
> flapping etc as it may affect the time bgp scanner takes.

Nope, nothing like that perhaps 50 flaps out of 120000 routes.

One of these routers has a lot of peers, and another only a few so it doesnt
seem to depend on that, I guess just number of routes and size of CPU? (NPE225)

Any other docs worth reading to help understand the BGP processes and possible
tweaks?

Steve

> 
> Ilker
> 
> ----- Original Message -----
> From: "Stephen J. Wilcox" <steve@telecomplete.co.uk>
> To: "Ilker TEMIR" <itemir@cisco.com>
> Cc: <cisco-nsp@puck.nether.net>
> Sent: Wednesday, November 20, 2002 10:51 AM
> Subject: Re: [nsp] whats bgp scan all about
> 
> 
> > Hi Ilker,
> >  I managed to find that too when I changed my search keywords, (bgp
> scan-time
> > didnt find anything useful!)
> >
> > Ok I understand a little more but it doesnt offer suggestion that you can
> change
> > anything, heres what my 1 min cpu looks like
> >
> > 100
> >  90
> >  80                                   *****
> >  70                                   **********
> >  60                                   **********
> >  50                                   **********
> >  40                                   **********     *****
> >  30  **********************************************************
> >  20  **********************************************************
> >  10  **********************************************************
> >     0....5....1....1....2....2....3....3....4....4....5....5....
> >               0    5    0    5    0    5    0    5    0    5
> >
> > Altho it doesnt affect traffic it does affect the router response time
> which
> > doesnt look good on pings, traceroutes etc.
> >
> > Can anything be done, or just buy a bigger router?
> >
> > Steve
> >
> > On Wed, 20 Nov 2002, Ilker TEMIR wrote:
> >
> > > It is a periodic check for bgp. It checks the availabilty of next-hops
> and
> > > other important stuff.
> > >
> > > It is a low priority process and should not be causing any problems for
> you.
> > >
> > > If it is giving trouble, have a look at the following URL
> > >
> > >
> http://www.cisco.com/en/US/tech/tk648/tk365/technologies_tech_note09186a0080
> > > 094bed.shtml#topic2
> > >
> > > Ilker
> > >
> > > ----- Original Message -----
> > > From: "Stephen J. Wilcox" <steve@telecomplete.co.uk>
> > > To: <cisco-nsp@puck.nether.net>
> > > Sent: Wednesday, November 20, 2002 2:09 AM
> > > Subject: [nsp] whats bgp scan all about
> > >
> > >
> > > > Hi,
> > > >  excuse my ignorance of the detail of the BGP code.. anyone know, what
> > > does the
> > > > BGP scanner process do - surely the routing table is altered on a
> trigger
> > > basis
> > > > and not when this scanner runs and checks everything which is what the
> > > only
> > > > document i found suggests?
> > > >
> > > > Can it be disabled? It seems possible to change the interval but only
> to
> > > reduce
> > > > it from 1 minute.
> > > >
> > > > Thanks!
> > > >
> > > > Steve
> > > >
> > > > --
> > > > Stephen J. Wilcox
> > > > BSc (Hons).  CCIE #10730
> > > > Technical Director, Telecomplete
> > > > http://www.telecomplete.co.uk/
> > > >
> > > > _______________________________________________
> > > > cisco-nsp mailing list  real_name)s@puck.nether.net
> > > > http://puck.nether.net/mailman/listinfo/cisco-nsp
> > > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > > >
> > >
> > >
> >
> 
>