From: cebuano (cebu2ccie@cox.net)
Date: Tue Jan 07 2003 - 18:44:47 GMT-3
Aidan,
Once again, thanks for redirecting my attention. This is the basis of my
original post on CCO....
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_
reference_chapter09186a00800917e8.html#1021694
What I am worried about in the lab is my misinterpretation of
words/phrases since English is NOT my native tongue. The URL above, to
my understanding, says a summary address is NOT installed in the route
table (i.e. if I do a "sh ip route" it should NOT be there).
Anyone from non-English background with experience getting words/phrases
clarified by the proctor? Were they helpful/snobby/etc...?
Thank you all.
Elmer
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Aidan Marks
Sent: Tuesday, January 07, 2003 5:12 AM
To: Sage Vadi
Cc: ccielab@groupstudy.com
Subject: Re: EIGRP Summary-address behavior
7200-1#sh ip route eigrp | i Null
D 172.0.0.0/8 is a summary, 03:27:37, Null0
7200-1#sh ip route 172.0.0.0
Routing entry for 172.0.0.0/8, supernet
Known via "eigrp 1", distance 5, metric 18944, type internal
Redistributing via eigrp 1
Routing Descriptor Blocks:
* directly connected, via Null0
Route metric is 18944, traffic share count is 1
Total delay is 80 microseconds, minimum bandwidth is 151515 Kbit
Reliability 255/255, minimum MTU 4470 bytes
Loading 1/255, Hops 0
[snip]
interface ATM6/0
description #TO LS1010-3-0-0#
ip address 172.31.69.9 255.255.255.0
ip authentication mode eigrp 1 md5
ip authentication key-chain eigrp 1 ccie
ip summary-address eigrp 1 172.0.0.0 255.0.0.0 5
atm pvc 1 0 5 qsaal
atm pvc 2 0 16 ilmi
atm esi-address 999999999999.00
atm ilmi-keepalive
atm arp-server nsap 47.111122223333444455556666.666666666666.00
[snip]
router eigrp 1
passive-interface default
no passive-interface ATM6/0
network 172.31.69.0 0.0.0.255
no auto-summary
no eigrp log-neighbor-changes
[snip]
The creation of a null0 route for an ip eigrp summary address with an AD
of
5 is stated here in the docs, e.g.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/n
p1_c/1cprt1/1ceigrp.htm
If there is a place on CCO suggesting that the summary address is not
installed in the RIB when AD < 255, then this is probably a doc bug.
Aidan
At 07:30 PM 7/01/2003, Sage Vadi wrote:
>As Tim indicated,
>
>R7#sh ip route 192.168.0.0
>~cut~
>* directly connected, via Null0 <--
>~cut~
>
>Q) Why should it show admin distance locally, when it
>has a directly connected Null0? Have you got this in
>your lab? Please paste your output and show commands
>if you do.
>
>
> --- Aidan Marks <amarks@cisco.com> wrote: > sh ip
>route 192.168.0.0 and it will show the
> > distance in the verbose view.
> >
> > At 05:55 PM 7/01/2003, Sage Vadi wrote:
> >
> > >Aidan,
> > >
> > >Locally on the ABR this is what it gets -
> > >
> > >D 192.168.0.0/22 is a summary, 00:52:38, Null0
> > >
> > >There is no indication of AD.
> > >
> > >I'm going to test with another IOS.
> > >
> > >Cheers,
> > >Sage
> > >
> > >
> > > --- Aidan Marks <amarks@cisco.com> wrote: > At
> > 05:11
> > >PM 7/01/2003, Sage Vadi wrote:
> > > >
> > > > >Elmer/Cebuano,
> > > > >
> > > > >On my core router:
> > > > >D 192.168.0.0/22 [90/2169856] via 116.16.37.2
> > > > >
> > > > >On my ABR I have configured:
> > > > >ip summary-add eigrp 100 192.168.0.0
> > 255.255.252.0
> > > > 5
> > > > >
> > > > >A# To me it DOES seems that the core router
> > learns
> > > > the
> > > > >summarization as a InternalEIGRP route with AD
> > of
> > > > 90.
> > > > >
> > > > >This is testing with 12.2(12.5)T, I can also
> > test
> > > > with
> > > > >12.2(10b) if you like.
> > > > >
> > > > >Q) Anybody else know why? According to AD
> > charts
> > > > >summarized EIGRP routes = 5
> > > >
> > > > AD is local. If you look at the AD of the
> > summary
> > > > to null0 via show ip
> > > > route it should be 5 i.e. "distance 5". The
> > other
> > > > router picks it up as
> > > > just another EIGRP route (internal) and
> > therefore
> > > > gets AD 90 on the other
> > > > router.
> > > >
> > > > Yes?
> > > >
> > > > Aidan
> > > >
> > > >
> > > > >Cheers,
> > > > >Sage
> > > > >
> > > > > --- cebuano <cebu2ccie@cox.net> wrote: >
> > Hello.
> > > > > > I'd like to know if the command "ip
> > > > summary-address
> > > > > > eigrp" as documented
> > > > > > on CCO has changed. It is described under
> > the
> > > > > > command reference as
> > > > > > follows.
> > > > > >
> > > > > > EIGRP summary routes are given an
> > administrative
> > > > > > distance value of 5.
> > > > > > The administrative distance metric is used
> > to
> > > > > > advertise a summary
> > > > > > without installing it in the routing table.
> > > > > > But I'm getting two conflicting results.
> > > > > > 1. I don't see the admin distance of 5.
> > > > > > 2. I see the summary installed in the
> > routing
> > > > table.
> > > > > >
> > > > > > MC3810a(config-if)#ip summary-address eigrp
> > 2001
> > > > > > 150.100.200.0
> > > > > > 255.255.255.0
> > > > > >
> > > > > > MC3810a#ir
> > > > > >
> > > > > > 150.100.0.0/16 is variably subnetted, 7
> > > > > > subnets, 2 masks
> > > > > > D 150.100.200.0/24 is a summary,
> > 00:02:41,
> > > > > > Null0
> > > > > > C 150.100.200.0/30 is directly
> > connected,
> > > > > > Serial0
> > > > > > D 150.100.100.0/24 [90/2681856] via
> > > > > > 150.100.200.1, 00:02:07,
> > > > > > Serial0
> > > > > > D EX 150.100.2.0/24 [170/2195456] via
> > > > > > 150.100.200.1, 00:02:07,
> > > > > > Serial0
> > > > > > C 150.100.3.0/24 is directly
> > connected,
> > > > > > Ethernet0
> > > > > > D EX 150.100.1.0/24 [170/2195456] via
> > > > > > 150.100.200.1, 00:02:07,
> > > > > > Serial0
> > > > > > D 150.100.10.0/24 [90/2185984] via
> > > > > > 150.100.200.1, 00:02:09,
> > > > > > Serial0
> > > > > >
> > > > > > MC3810a#sh ip eigrp topo
> > > > > > IP-EIGRP Topology Table for
> > > > > > AS(2001)/ID(192.168.254.1)
> > > > > >
> > > > > > P 150.100.200.0/24, 1 successors, FD is
> > 2169856
> > > > > > via Summary (2169856/0), Null0
> > > > > > P 150.100.200.0/30, 1 successors, FD is
> > 2169856
> > > > > > via Connected, Serial0
> > > > > > P 150.100.100.0/24, 1 successors, FD is
> > 2681856
> > > > > > via 150.100.200.1
> > (2681856/2169856),
> > > > > > Serial0
> > > > > > P 150.100.2.0/24, 1 successors, FD is
> > 2195456
> > > > > > via 150.100.200.1 (2195456/281600),
> > > > Serial0
> > > > > > P 150.100.3.0/24, 1 successors, FD is 281600
> > > > > > via Connected, Ethernet0
> > > > > > P 150.100.1.0/24, 1 successors, FD is
> > 2195456
> > > > > > via 150.100.200.1 (2195456/281600),
> > > > Serial0
> > > > > > P 150.100.10.0/24, 1 successors, FD is
> > 2185984
> > > > > > via 150.100.200.1 (2185984/176128),
> > > > Serial0
> > > > > >
> > > > > > Any comments?
> > > > > > Thanks.
> > > > > > Elmer
> > > > > > .
> > > > > >
> > > >
> > >
> >
> >__________________________________________________________________
> > > > > > To unsubscribe from the CCIELAB list, send a
> > > > message
> > > > > > to
> > > > > > majordomo@groupstudy.com with the body
> > > > containing:
> > > > > > unsubscribe ccielab
> > > > >
> > > >
> > >__________________________________________________
> > > > >Do You Yahoo!?
> > > > >Everything you'll ever need on one web page
> > > > >from News and Sport to Email and Music Charts
> > > > >http://uk.my.yahoo.com
> > > > >.
> > > > .
> > > >
> >
> >__________________________________________________________________
> > > > To unsubscribe from the CCIELAB list, send a
> > message
> > > > to
> > > > majordomo@groupstudy.com with the body
> > containing:
> > > > unsubscribe ccielab
> > >
> > >__________________________________________________
> > >Do You Yahoo!?
> > >Everything you'll ever need on one web page
> > >from News and Sport to Email and Music Charts
> > >http://uk.my.yahoo.com
> > .
> >
>__________________________________________________________________
> > To unsubscribe from the CCIELAB list, send a message
> > to
> > majordomo@groupstudy.com with the body containing:
> > unsubscribe ccielab
>
>__________________________________________________
>Do You Yahoo!?
>Everything you'll ever need on one web page
>from News and Sport to Email and Music Charts
>http://uk.my.yahoo.com
.
.
This archive was generated by hypermail 2.1.4 : Sat Feb 01 2003 - 07:33:44 GMT-3