Re: IGRP Subnet mask issues [7:31349]
Hi Aamer, This is another solution without static routes. The idea is still the same, break 10.0.0.0/24 to smaller /30 networks to fit with the interface of IGRP domain (10.3.255.8/30), using "summary-address" at OSPF. r2#sh run router ospf 1 summary-address 10.0.0.0 255.255.255.252 summary-address 10.0.1.0 255.255.255.252 redistribute igrp 1 metric 10 subnets network 10.0.0.0 0.0.0.31 area 0 network 10.0.1.0 0.0.0.255 area 1 neighbor 10.0.0.6 priority 1 neighbor 10.0.0.5 priority 1 ! router igrp 1 redistribute ospf 1 route-map o2i passive-interface Serial0.24 passive-interface Serial0.100 network 10.0.0.0 default-metric 1 100 255 1 1500 ! ip classless no ip http server ! access-list 101 permit ip host 10.0.0.0 host 255.255.255.252 access-list 101 permit ip host 10.0.1.0 host 255.255.255.252 route-map o2i permit 10 match ip address 101 ! At r1 which receives the /30 networks 05:42:41: IGRP: broadcasting request on Serial0/0 05:42:41: IGRP: received update from 10.3.255.10 on Serial0/0 05:42:41: subnet 10.0.0.0, metric 8576 (neighbor 1100) 05:42:41: RT: add 10.0.0.0/30 via 10.3.255.10, igrp metric [100/8576] 05:42:41: subnet 10.0.1.0, metric 8576 (neighbor 1100) 05:42:41: RT: add 10.0.1.0/30 via 10.3.255.10, igrp metric [100/8576] 05:42:41: IGRP: Update contains 2 interior, 0 system, and 0 exterior routes. 05:42:41: IGRP: Total routes in update: 2 05:42:41: IGRP: edition is now 8 > want to do it without static routes.thats a restriction Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31380&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IGRP Subnet mask issues [7:31349]
want to do it without static routes.thats a restriction Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31366&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IGRP Subnet mask issues [7:31349]
Without changing the interface subnetmask to /24, break 10.0.0.0/24 to several /30 networks (10.0.0.0/30 to 10.0.0.252/30) , make a static route for each /30 network to the interface connecting 10.0.0.0/24, and redistribute those static routes to IGRP domain. This kind of solution is defined at CCO, http://www.cisco.com/warp/public/105/52.html I doubt that this solution will be allowed in the Lab, because the requirement of static routes. PS: I think "ip subnet-zero" has to enable to allow 10.0.0.0 network. > considering how often and to what depth this issue has been and continues to > be discussed here and elsewhere, it shouldn't be too hard to discover the > answer. > > try changing your network on the R1-R2 link to a /24 and see what happens. > then report back your findings along with your own speculation. > > HTH > > chuck > > > ""Aamer Kaleem"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > I have two routers. One of them is running IGRP,BGP and OSPF and other is > > running IGRP only. > > The network between two IGRP routers is 30 bit mask. Here is the diagram: > > > > IGRP/BGP/OSPF IGRP > > > > R1-R2 > > 10.3.255.10/3010.3.255.9/30 > > > > R1 has some 24 bit 10-netorks directly connected to it as well. I have > > following IGRP configuration > > > > R1: > > router igrp 1 > > redistribute ospf 1 > > redistribute bgp 65430 > > network 10.0.0.0 > > default-metric 10 100 255 255 1500 > > > > R2: > > router igrp 1 > > network 10.0.0.0 > > > > > > 10.0.0.0/24 networks won't show up in the routing table of R2. > > Could someone explain why it is happening what is the fix. > > > > Thank you, > > Aamer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31365&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IGRP Subnet mask issues [7:31349]
Chuck, Changing the IGRP interfaces to /24 bit solves the problem. IGRP matches the incoming routes with its own interface Subnet mask and rejects the one which does not match. So, how to fix it without changing the IGRP interfaces mask. Thanx, Aamer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31357&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IGRP Subnet mask issues [7:31349]
In general, you will not want to redistribute most BGP routes into your IGP. A common design is to redistribute one or two routes and to make them exterior routes in IGRP, or have your BGP speaker generate a default route for your autonomous system. When redistributing from BGP into IGP, only the routes learned using EBGP get redistributed. EBGP default administrative distance is 20 vs IGRP's 100. Make sure you meant IGRP and not EIGRP, if it is EIGRP then run "no auto-summary" to see the subnets. Regards, Murtaza P.S.: some more info from cisco site http://www.cisco.com/warp/public/105/21.html - Original Message - From: "Aamer Kaleem" To: Sent: Tuesday, January 08, 2002 8:10 PM Subject: IGRP Subnet mask issues [7:31349] > I have two routers. One of them is running IGRP,BGP and OSPF and other is > running IGRP only. > The network between two IGRP routers is 30 bit mask. Here is the diagram: > > IGRP/BGP/OSPF IGRP > > R1-R2 > 10.3.255.10/3010.3.255.9/30 > > R1 has some 24 bit 10-netorks directly connected to it as well. I have > following IGRP configuration > > R1: > router igrp 1 > redistribute ospf 1 > redistribute bgp 65430 > network 10.0.0.0 > default-metric 10 100 255 255 1500 > > R2: > router igrp 1 > network 10.0.0.0 > > > 10.0.0.0/24 networks won't show up in the routing table of R2. > Could someone explain why it is happening what is the fix. > > Thank you, > Aamer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31354&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IGRP Subnet mask issues [7:31349]
considering how often and to what depth this issue has been and continues to be discussed here and elsewhere, it shouldn't be too hard to discover the answer. try changing your network on the R1-R2 link to a /24 and see what happens. then report back your findings along with your own speculation. HTH chuck ""Aamer Kaleem"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I have two routers. One of them is running IGRP,BGP and OSPF and other is > running IGRP only. > The network between two IGRP routers is 30 bit mask. Here is the diagram: > > IGRP/BGP/OSPF IGRP > > R1-R2 > 10.3.255.10/3010.3.255.9/30 > > R1 has some 24 bit 10-netorks directly connected to it as well. I have > following IGRP configuration > > R1: > router igrp 1 > redistribute ospf 1 > redistribute bgp 65430 > network 10.0.0.0 > default-metric 10 100 255 255 1500 > > R2: > router igrp 1 > network 10.0.0.0 > > > 10.0.0.0/24 networks won't show up in the routing table of R2. > Could someone explain why it is happening what is the fix. > > Thank you, > Aamer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31352&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
IGRP Subnet mask issues [7:31349]
I have two routers. One of them is running IGRP,BGP and OSPF and other is running IGRP only. The network between two IGRP routers is 30 bit mask. Here is the diagram: IGRP/BGP/OSPF IGRP R1-R2 10.3.255.10/3010.3.255.9/30 R1 has some 24 bit 10-netorks directly connected to it as well. I have following IGRP configuration R1: router igrp 1 redistribute ospf 1 redistribute bgp 65430 network 10.0.0.0 default-metric 10 100 255 255 1500 R2: router igrp 1 network 10.0.0.0 10.0.0.0/24 networks won't show up in the routing table of R2. Could someone explain why it is happening what is the fix. Thank you, Aamer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31349&t=31349 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
