[c-nsp] HSRP On Bonded ADSL Iterface

[Vincent C Jones]

Just keep in mind that while tracking the dialer interface is totally
useless, tracking the ADSL interface is only an improvement, not a best
practice. You really should be testing the ADSL link at the IP level to
ensure that it can reach useful destinations on the Internet. This goes
by a variety of names, RTR, SLA, ping-based routing, etc. Just because
the ISP's DSLAM has the interface up does not mean you have useful
connectivity. Of course, if your DSL router does not support this,
you're out of luck.

Good luck and have fun!
-- 
Vincent C. Jones
Networking Unlimited, Inc.
Phone: +1 201 568-7810
V.Jones at NetworkingUnlimited.com


On Tue, 2010-06-08 at 11:25 +0200, Jan Gregor wrote:
> Hi,
> 
> tracking the dialer interface makes no sense, since dialer is always up.
> Have to track physical ATM interfaces.
> 
> Best regards,
> 
> Jan
> 
> On 06/07/2010 10:59 PM, Seth Mattinen wrote:
> > On 6/7/2010 13:13, Dominic wrote:
> >> Hi Everyone:
> >>
> >> I am doing HSRP between two cisco routers. One has a bonded ADSL. I am using the interface tracking option as well, but when the ADSL Lines are unplugged, HSRP does NOT kick in. Yes, HSRP is configured and  otherwise works well - it kicks in when the LAN cable is unplugged, for example. It  just diesn't kick in when  when the ADSL cables are unplugged.. I am asking HSRP to tracker interface dialer 1. Is this correct way to do it ? Am I missing something? 
> >>
> >> Below is the HSRP config as well as all the ADSL config.
> >>
> >> Dominic
> >>
> >>
> >>
> >> interface FastEthernet0/0
> >>  description LAN HSRP INTERFACE
> >>  ip address 192.168.1.2 255.255.255.0
> >>  no ip redirects
> >>  no ip unreachables
> >>  no ip proxy-arp
> >>  ip nat inside
> >>  ip virtual-reassembly
> >>  duplex auto
> >>  speed auto
> >>  standby 1 ip 192.168.1.1
> >>  standby 1 priority 105
> >>  standby 1 preempt delay minimum 60
> >>  standby 1 track 1 decrement 20
> >>  no mop enabled
> >>  service-policy output from.BTTVOIP.POLICY
> >>
> > 
> > 
> > "standby 1 track 1" means use "tracking object number 1", not interface
> > dialer1. Here's a working example from my network:
> > 
> > interface FastEthernet0/0
> >  ip address x
> >  duplex auto
> >  speed auto
> >  standby 110 ip x
> >  standby 110 timers msec 500 2
> >  standby 110 preempt
> >  standby 110 track FastEthernet1/0 20
> >  standby 110 track 5 decrement 20
> > 
> > track 5 ip route x x reachability
> > 
> > 
> > As you can see, I'm tracking two things: the state of interface Fa1/0
> > and the presence of a route defined by tracking object 5.
> > 
> > ~Seth
> > _______________________________________________
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> 
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