From: Padhu (LFG) (padhu@xxxxxxxxxxxx)
Date: Tue Aug 21 2001 - 14:26:41 GMT-3
May or may not be directly related to this problem...
Is it possible to generate a default network in IGRP only when the ISDN line
is down ? More like a floating static(default). I don't see any route-map
option unlike other routing protocols.
Cheers,Padhu
-----Original Message-----
From: tom cheung [mailto:tkc9789@hotmail.com]
Sent: Tuesday, August 21, 2001 12:03 PM
To: danyoung99@mediaone.net; lipeng@canada.com; ccielab@groupstudy.com
Subject: RE: igrp default-network with DDR
If IGRP convergence time is a concern, can't you treak "timers-baisc" to
force IGRP to converge faster? (at least in the lab environment)
>From: "Daniel C. Young" <danyoung99@mediaone.net>
>Reply-To: "Daniel C. Young" <danyoung99@mediaone.net>
>To: <lipeng@canada.com>, <ccielab@groupstudy.com>
>Subject: RE: igrp default-network with DDR
>Date: Mon, 20 Aug 2001 23:54:48 -0700
>
>Peng Li,
>
>IGPR does not understand the quad-zero network (what you call 0/0). The
>only
>option that IGRP has of defining a default network is to use the 'ip
>default-network' command. Without dialer watch or backup interface, I
>believe that your other option is to use snapshot routing (yet another
>terrible technology). The 7 minute delay is considered normal, since IGRP
>converges even slower than RIPv1. (terrible, terrible...)
>
>Personally, I do not feel that IGRP should be much of a concern for ISDN
>backup. Think about how much scenarios would you realistically have someone
>running IGRP over a WAN link. Also, since IGRP was originally designed to
>meet some of the limitations of RIPv1, it is largely antiquated. I would
>concentrate more on DDR for OSPF, IPX, and maybe EIGRP. Those are the more
>likely scenarios.
>
>Regards,
>Daniel
>
>-----Original Message-----
>From: Peng Li [mailto:lipeng@canada.com]
>Sent: Monday, August 20, 2001 6:02 PM
>To: young@pobox.com; ccielab@groupstudy.com
>Subject: Re: igrp default-network with DDR
>
>
> Hi,Daniel,
>The attached is the config with some non-necessary parts deleted. Today, I
>tried to use no passiv-dialer0 and attempted to use the tempory dynamic
>routes for returning packets . I realized that it works only with sacrifice
>of waiting up at least for 7mins for IGRP routes via ATM gone, a little bit
>terrible. Any suggestions except of Dialerwatch and physical BAckup for
>IGRP
>situation. For Rip, Eigrp, Ospf, we can easily user 0/0 (if allowed in lab)
>and redistribute to the R3/4 network for returning pkts to be routed
>correctly to Dialer0 without any dynamic RT. How to do with IGRP.?
>
>**********floating problem with IGRP, how to make a default
>route????????*******
>
>hostname r2
>username r3 password 0 cisco
>isdn switch-type basic-ni
>interface ATM1/0
> ip address 123.4.32.3 255.255.255.0
> ip ospf network point-to-point
> shutdown
> no atm ilmi-keepalive
> pvc 10/20
> protocol ip 123.4.32.2 broadcast
> encapsulation aal5snap
>interface BRI2/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-ni
> isdn spid1 416364097400 3640974
> isdn spid2 416364045000 3640450
>interface Dialer0
> ip address 123.4.23.3 255.255.255.0
> encapsulation ppp
> dialer pool 1
> dialer remote-name r3
> dialer string 3647481
> dialer string 3648554
> dialer-group 1
> ppp pap sent-username r2 password 7 045802150C2E
>!
>router igrp 1
> redistribute static metric 10000 8000 255 1 1500
> passive-interface Dialer0
> network 123.0.0.0
>ip route 200.4.10.0 255.255.255.0 Dialer0 200
>ip http server
>access-list 101 deny igrp any any
>access-list 101 permit ip any any
>dialer-list 1 protocol ip list 101
>---------------------------
>
>hostname r3
>username r2password 0 cisco
>isdn switch-type basic-ni
>interface ATM1/0
> ip address 123.4.32.2 255.255.255.0
> atm clock INTERNAL
> no atm ilmi-keepalive
> pvc 10/20
> protocol ip 123.4.32.3 broadcast
> encapsulation aal5snap
>interface BRI2/0
> no ip address
> encapsulation ppp
> dialer pool-member 1
> isdn switch-type basic-ni
> isdn spid1 416364748100 3647481
> isdn spid2 416364855400 3648554
> interface Dialer0
> ip address 123.4.23.2 255.255.255.0
> encapsulation ppp
> dialer pool 1
> dialer remote-name r2
> dialer string 3640974
> dialer string 3640450
> dialer-group 1
> ppp authentication pap
>!
>router igrp 1
> redistribute static metric 10000 100 255 1 1500
> passive-interface Dialer0
> network 123.0.0.0
> network 190.4.0.0
> distribute-list 10 out ATM1/0
> distribute-list 10 in
>ip classless
>ip default-network 123.0.0.0
>ip route 123.0.0.0 255.0.0.0 Dialer0
>access-list 10 deny 0.0.0.0
>access-list 10 permit any
>access-list 101 deny igrp any any
>access-list 101 permit ip any any
>dialer-list 1 protocol ip list 101
>
>----- Original Message -----
>From: "Daniel C. Young" <danyoung99@mediaone.net>
>To: "'Peng Li'" <lipeng@canada.com>
>Sent: Monday, August 20, 2001 1:00 AM
>Subject: RE: igrp default-network with DDR
> >
> > If R2 must initiate the call, then the line will not come up until R1 or
>R2
> > has traffic to send to the other side. But return traffic should not
>have
>a
> > problem finding its way back unless your DDR is misconfigured, such as
>not
> > having a remote name, etc.
> >
> > Could you please post the configs, debug outputs, etc.?
> >
> > Regards,
> > Daniel
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Peng Li
> > Sent: Sunday, 19 August 2001 11:58 AM
> > To: ccielab@groupstudy.com
> > Subject: igrp default-network with DDR
> >
> >
> > one DDR issue.
> >
> > R1-------R2------------R3--------R4
> > \ /
> > \ isdn /
> >
> > Just u r asked to back a network 139.4.x.0 (or 200.4.x.0)on R4 and R2
>should
> > initiate the call.
> > all these routers use IGRP. for r1 and r2, the Static floating part is
>ok.
> > But for R3 and R4, how do you config so that r3 and r4 will successfully
> > return the packet from r2/r1 part?
> > I tried 0/0, redistribute static, some kind of ipdefault-network, seems
>no
> > joy.
> >
> > Any one can help out there?
> > **Please read:http://www.groupstudy.com/list/posting.html
>**Please read:http://www.groupstudy.com/list/posting.html
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