[c-nsp] HSRP Question

[Gordon Bezzina]

Hello,
 
The static route will not be distributed if the interface is not connected,
or the switch is down.

In fact try it out, create a static route on an interface, do a s hip route,
then disconnect the interface , either by a shut or switch of switch and you
will notice that the static route is not in the routing table anymore.

Also if the router is down then this is not a problem at all !!! for obvious
reasons :-)

Finally we use iBGP internally and it works.

Rgds
Gordon

-----Original Message-----
From: Paul Stewart [mailto:pstewart at nexicomgroup.net] 
Sent: 25 September 2006 18:44
To: Gordon Bezzina
Cc: cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] HSRP Question

Thanks..

But if I create a static route, then during failover nothing will work
right?  Because it's pointed specifically to an interface then?

We run OSPF, so would this not work without static routing as long as
we're "redistribute connected" ?

Thanks,

Paul

 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Gordon Bezzina
Sent: Monday, September 25, 2006 12:33 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] HSRP Question


Hi Paul,

The HSRP ip can be outside the subnet but for this to work you need to
create a static route to the new subnet.

EG.

interface Ethernet0/0/3.1
 encapsulation dot1Q 101
 ip address 192.168.100.21 255.255.255.248  no snmp trap link-status
standby 1 ip 192.168.1.254  standby 1 timers 5 15  standby 1 priority
110  standby 1 preempt !

And later on

ip route 192.168.1.0 255.255.255.0 Ethernet0/0/3.1 


hope it helps.

Rgds
Gordon

Paul Stewart wrote:
> Hi there...
> 
> Just a question on HSRP to make sure I understand..:)
> 
> Router A
> --------
> 
> interface ethernet0
>  no shutdown
>  ip address 10.2.0.1 255.255.0.0
>  standby 1 ip 10.2.0.20
>  standby 1 priority 105
>  standby 1 preempt delay minimum 10
>  standby 1 timers 3 10
>  standby 1 track ethernet1 10
>  standby 1 track ethernet2 10
> 
> Router B
> --------
> 
> interface ethernet0
>  no shutdown
>  ip address 10.2.0.2 255.255.0.0
>  standby 1 ip 10.2.0.20
>  standby 1 priority 105
>  standby 1 preempt delay minimum 10
>  standby 1 timers 3 10
>  standby 1 track ethernet1 10
>  standby 1 track ethernet2 10
> 
> Can the standby IP address be *outside* of the subnet on the
interfaces?
> Sorry, fairly new to HSRP....
> 
> We would like to move our BGP connections to HSRP basically and trying

> to find the best way.  We have a pair of 6509's feeding the layer2 
> connectivity to a GSR and I'd like to setup 2 ports physically for 
> every BGP connection.  The slight complication comes in the fact that 
> most of these /30 connections for BGP are the upstream's IP space.  I 
> don't want to redo all the connections, would rather use what we have
now...
> 
> Thoughts? ;)
> 
> Paul Stewart
> Network Administrator
> Nexicom Inc.
> http://www.nexicom.net/
> 
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