From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Fri Jun 15 2007 - 14:54:11 ART
Never mind, this is a bug in 12.4(11)T, T1 and T3, working on getting in
fixed in 12.4(11)T3, but not committed yet.
For once my paranoia was right! :D
CSCsi89454 Bug Details
rip summary-address is not advertised
Alternate Headline: rip summary-address is not advertised
Symptom:
rip summary-address is not advertised to neighbor
Conditions:
This is seen when 'ip summary-address rip' is configured on interface
Workaround:
You can configure 'ip route null0'
This will place the summary in the routing table and now rip will
advertise this summary.
Alternate Details:
Symptom:
rip summary-address is not advertised to neighbor
Conditions:
This is seen when 'ip summary-address rip' is configured on interface
Workaround:
You can configure 'ip route null0'
This will place the summary in the routing table and now rip will
advertise this summary.
-----Original Message-----
From: Mike Kraus (mikraus)
Sent: Friday, June 15, 2007 12:14 PM
To: 'Narbik Kocharians'; Henk de Tombe; smorris@ipexpert.com
Cc: Phuong Nguyen Van; ccielab@groupstudy.com
Subject: RE: RIPv2 summary-address problem.
The below scenario is from IPExpert Prep Workbook Section 4. (There is
a separate task that requires no ip split-horizon, which would be why
Phuong had it in his config).
I am experiencing the same problem as Phuong was. Only way I can get
this to work is to add the route to null 0 as well.
Perhaps Scott can offer some guidance?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Narbik Kocharians
Sent: Monday, April 23, 2007 11:30 AM
To: Henk de Tombe
Cc: Phuong Nguyen Van; ccielab@groupstudy.com
Subject: Re: RIPv2 summary-address problem.
Phuong,
Did you "clear ip route *" on the oruters. By the way why do you have no
ip split-horizon command? just wondering.
On 4/23/07, Henk de Tombe <henk.de.Tombe@qi.nl> wrote:
>
> Hi,
>
> I've pasted your configs in two routers and It's works fine:
>
>
>
> R1#sh ip ro
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2
> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> ia - IS-IS inter area, * - candidate default, U - per-user
> static route
> o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 172.1.0.0/24 is subnetted, 4 subnets
> C 172.1.1.0 is directly connected, Loopback2
> C 172.1.0.0 is directly connected, Loopback1
> C 172.1.3.0 is directly connected, Loopback4
> C 172.1.2.0 is directly connected, Loopback3
> 150.50.0.0/24 is subnetted, 1 subnets
> C 150.50.17.0 is directly connected, FastEthernet0/0
> R1#
> R1#sh ip rip data
> 150.50.0.0/16 auto-summary
> 150.50.17.0/24 directly connected, FastEthernet0/0
> 172.1.0.0/16 auto-summary
> 172.1.0.0/22 int-summary
> 172.1.0.0/24 directly connected, Loopback1
> 172.1.1.0/24 directly connected, Loopback2
> 172.1.2.0/24 directly connected, Loopback3
> 172.1.3.0/24 directly connected, Loopback4
>
>
> R2#sh ver | i IOS
> Cisco IOS Software, 7200 Software (C7200-ADVIPSERVICESK9-M), Version
> 12.4(9)T, RELEASE SOFTWARE (fc1)
>
>
>
> R2#sh ip ro
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2
> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> ia - IS-IS inter area, * - candidate default, U - per-user
> static route
> o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 172.1.0.0/22 is subnetted, 1 subnets
> R 172.1.0.0 [120/1] via 150.50.17.1, 00:00:00, FastEthernet0/0
> 150.50.0.0/24 is subnetted, 1 subnets
> C 150.50.17.0 is directly connected, FastEthernet0/0
> R2#
> R2#
> R2#sh ip rip data
> 150.50.0.0/16 auto-summary
> 150.50.17.0/24 directly connected, FastEthernet0/0
> 172.1.0.0/16 auto-summary
> 172.1.0.0/22
> [1] via 150.50.17.1, 00:00:09, FastEthernet0/0
>
>
> Regards,
> Henk
>
>
>
> Met vriendelijke groet,
>
> Q&I
>
> Henk de Tombe
> Network Engineer
> Q&I NEDERLAND BV
> Delftech Park 35 - 37
> P.O. Box 402 - 2600 AK DELFT
> Phone [+31] 15-8880444 - Fax [+31] 15-8880445 info@qi.nl - www.qi.nl
>
> -----Oorspronkelijk bericht-----
> Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens
> Phuong Nguyen Van
> Verzonden: maandag 23 april 2007 13:55
> Aan: ccielab@groupstudy.com
> Onderwerp: RIPv2 summary-address problem.
>
> Hi GS,
> I have problem with summary-address in RIPv2. I have 2 scenarios here:
>
> *[1]*
>
> My topology: R1 (f0/0) connect directly to R2 (Fa0/0), 2 routers run
> only
> RIPv2 (send & receive) with no auto-summary.
> I want to summary all loopback addresses on R1 in to one entry and
> advertises it to R2; so, my configuration like this:
> **
> *R1*
> !
> *interface Loopback1
> ip address 172.1.0.1 255.255.255.0
> !
> interface Loopback2
> ip address 172.1.1.1 255.255.255.0
> !
> interface Loopback3
> ip address 172.1.2.1 255.255.255.0
> !
> interface Loopback4
> ip address 172.1.3.1 255.255.255.0
> !
> interface FastEthernet0/0
> description To R2
> ip address 150.50.17.1 255.255.255.0
> no ip split-horizon
> ip summary-address rip 172.1.0.0 255.255.252.0 !
> router rip
> version 2
> network 150.50.0.0
> network 172.1.0.0
> no auto-summary
> ! *
> ------------------------------
> *R2
> **!
> interface FastEthernet0/0
> description To R1
> ip address 150.50.17.2 255.255.255.0
> !
> !
> router rip
> version 2
> network 150.50.0.0
> no auto-summary
> !*
>
> On R1:
> R1#sh ip rip database
> ...
> 150.50.17.0/24 directly connected, FastEthernet0/0
> 172.1.0.0/16 auto-summary
> *172.1.0.0/22 int-summary*
> 172.1.0.0/24 directly connected, Loopback1
> 172.1.1.0/24 directly connected, Loopback2
> 172.1.2.0/24 directly connected, Loopback3
> 172.1.3.0/24 directly connected, Loopback4
> ...
> R1#debug ip rip database
> RIP database events debugging is on
> R1#
> *Mar 1 01:53:37.279: *RIP-ERROR: summary route 172.1.0.0/22 not in
> routing
> table.*
>
> -> The result is: R1 doesn't advertise the summary-address to R2; what
> is
> the problem here? What are mistakes in this configuration?
>
> [2]
>
> The topology like in [1]. I don't use command ip summary-address
> anymore, I add a route entry to null0.
> **
> *R1*
> *!
> interface FastEthernet0/0
> description To R2
> ip address 150.50.17.1 255.255.255.0
> ! *
> *router rip
> version 2
> network 150.50.0.0
> network 172.1.0.0
> no auto-summary
> ! *
> *ip route 172.1.0.0 255.255.252.0 null0*
> ------------------------------
> *R2
> **!
> interface FastEthernet0/0
> description To R1
> ip address 150.50.17.2 255.255.255.0
> !
> router rip
> version 2
> network 150.50.0.0
> no auto-summary
> !*
> **
> -The result is: R2 has route 172.1.0.0/22 in routing table
>
> R2# sh ip route rip
> 172.1.0.0/22 is subnetted, 1 subnets
> *R 172.1.0.0 [120/1] via 150.50.17.1, 00:00:21, FastEthernet0/0*
>
> --> As I know the *network *command in RIP is to enable RIP on
> interfaces.
> What should I understand in this scenario?
>
> Can anyone help me? Thanks in advance.
> Phuong
>
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-- Narbik Kocharians CCIE# 12410 (R&S, SP, Security) CCSI# 30832 Network Learning, Inc. (CCIE class Instructor) www.ccbootcamp.com (CCIE Training)
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