[nsp] persistent dialing

[Victor Sudakov]

Eric Osborne wrote:
> > I assume this is a BRI? If you are worried about the routing protocol
> > using lots of bandwidth with flooding, adjacency forming etc., you can
> > configure the routing protocol to never bring up an adjacency. Then all
> > you have are hellos every 10 or 30 seconds(or whatever you choose).
> > 
> > Or the newer versions of code have GRE keepalive support, so you could
> > use that to trigger the idle timer by building a bogus tunnel across the
> > link. 
> > 
> > If you don't want to be reliant on user traffic triggering the idle
> > timer, I'm not sure how many options you have that are operationally
> > supportable.
> 
> Agreed.  Not like I'm anything close to a dial expert, but isn't
> bandwidth precious only if you have contention for it, and if you have
> contention, doesn't that mean you have traffic?  

The traffic may want to originate not from the dialling side, but from
the side being dialled. There are strange setups sometimes, in this case
I am trying to save on phone bills.

> Turn on RIP, send a
> single route every 30s; that isn't going to be much more than a byte
> or two per second, on average.  
> 
> 
> 
> eric
> 
> > Marcus.
> >  
> > -----Original Message-----
> > From: Victor Sudakov [mailto:sudakov at sibptus.tomsk.ru] 
> > Sent: 09 January 2003 14:35
> > To: Marcus Keane
> > Cc: cisco-nsp at puck.nether.net
> > 
> > Marcus Keane wrote:
> > > Victor,
> > > If you have a dialer-list that permits everything and you are running 
> > > an active routing protocol on the link, the hellos will reset the idle
> > 
> > > timer so that the link will never go down.
> > 
> > In fact I need not run a routing protocol on that interface.
> > Running it for the sole purpose of bringing up the interface seems to be
> > an overkill and waste of precious bandwidth.
> > 
> > > HTH,
> > > Marcus. 
> > >  
> > > -----Original Message-----
> > > From: Victor Sudakov [mailto:sudakov at sibptus.tomsk.ru]
> > > Sent: 09 January 2003 13:59
> > > To: cisco-nsp at puck.nether.net
> > > 
> > > 
> > > Colleagues,
> > > 
> > > I need to make a router dialout to a remote NAS no matter if there is 
> > > interesting traffic to match a dialer list. I basically want it to 
> > > start dialling out on powerup, always stay connected and redial until 
> > > success every time it detects that PPP has failed.
> > > 
> > > How do I achieve this? Thanks a lot in advance.
> > > DDR all seems to be about bringing the link up when interesting 
> > > traffic is detected or when another interface is down. I seem to be 
> > > overlooking something obvious.
> > > 
> > > --
> > > Victor Sudakov,  VAS4-RIPE, VAS47-RIPN 
> > > _______________________________________________
> > > cisco-nsp mailing list  cisco-nsp at puck.nether.net 
> > > http://puck.nether.net/mailman/listinfo/cisco-nsp
> > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > 
> > --
> > Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> > 
> > _______________________________________________
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-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN