From: JINKIM (jinkim@xxxxxxxxxxxxxx)
Date: Thu Jun 07 2001 - 02:33:58 GMT-3
in general standy router doesn't need preempt, because it just keepalive
check with active router.
But when using "track" both router need preempt,
My thinking is
track interface down, priority is lowered, but standby router cannot achive
Active, because standby router don't have "preemption" ability.
andso stackby router can not Active.
When configuring preempt in standy router, standy router continuously
compare priority with active router,
so, It will become Active.
Read "preemption" role carefully.
when we didn't configure preempt in active router, when it down and up, it
doesn't active router again.
-----Original Message-----
From: Jeongwoo Park [mailto:jpark@wams.com]
Sent: Thursday, June 07, 2001 2:04 PM
To: 'JINKIM'
Subject: RE: HSRP track still doesn't work !!
Thanks it works
But why should I need preempt statement on both router?
would you explain to me?
Thanks
jp
-----Original Message-----
From: JINKIM [mailto:jinkim@softbank.co.kr]
Sent: Wednesday, June 06, 2001 9:19 PM
To: 'Jeongwoo Park'
Subject: RE: HSRP track still doesn't work !!
configure " standy 1 preempt" In r2 also.
-----Original Message-----
From: Jeongwoo Park [ mailto:jpark@wams.com <mailto:jpark@wams.com> ]
Sent: Thursday, June 07, 2001 12:55 PM
To: 'ccielab@groupstudy.com'
Subject: HSRP track still doesn't work !!
Hi all
I changed to "stand 1 track so 20"
I expected r1 to fail over to r2 when I plugged out dte cable from S0 on R1.
Still didn't work !!!!
whatelse am I missing in my config?
One more symtom I found was that when I pulled ethernet cable off the e0,
interface status changed to init. I expected it to change to standby.
Here is config after changing.
R1-------------ethernet----/R2
| /
| serial
| /
|serial /
| /
| /
| /
TermServer
r1:
hostname r1
!
!
no ip domain-lookup
!
!
interface Ethernet0
ip address 10.10.1.1 255.255.255.0
no ip redirects
standby 1 priority 95
standby 1 preempt
standby 1 ip 10.10.1.3
standby 1 track Serial0 20
!
interface Serial0
ip address 172.16.1.2 255.255.255.0
no ip mroute-cache
!
interface Serial1
no ip address
shutdown
!
ip classless
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
--------------------------------------------------------------
r2:
hostname r2
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
interface Ethernet0
ip address 10.10.1.2 255.255.255.0
no ip redirects
no ip directed-broadcast
standby 1 priority 90
standby 1 ip 10.10.1.3
standby 1 track s0
!
interface Serial0
ip address 172.16.2.2 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
interface TokenRing0
no ip address
no ip directed-broadcast
shutdown
!
ip nat translation timeout never
ip nat translation tcp-timeout never
ip nat translation udp-timeout never
ip nat translation finrst-timeout never
ip nat translation syn-timeout never
ip nat translation dns-timeout never
ip nat translation icmp-timeout never
ip classless
!
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
end
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