Re: classless to classfull routing issue
you'll just have to use the 24 bit masks that are default in the IGRP routing protocol. Or establish and redistribute static routes into your IGRP routing process. see http://www.cisco.com/warp/public/105/52.html for some other direction -e- Prasanna [EMAIL PROTECTED] wrote in message 983mlr$unf$[EMAIL PROTECTED]">news:983mlr$unf$[EMAIL PROTECTED]... Hi Guys I was trying to redistribute from OSPF Domain ( has variable subnets ,/24, /28 , /26 /25 ) to IGRP domain ( /24 ) , i got severe masking issue as IGRP is classfull and i could able to redistribute only /24 subnets .I was trying to implement summary address with /24 towards IGRP but i could not able to summarize the subnets. OSPF subnets - 192.168.112.0/24 192.168.113.192/26 192. 168.114.128/25 192.168.115. 240/28 IGRP subnet - 192.168.110.0/24 192.168.111.0/24 What is the elegant way to solve this problem _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: classless to classfull routing issue
Once solution would be to define multiple subinterfaces with the respective /28, /26, and /25 network masks. Classful protocols assume that the subnet mask being used on the router is the subnet mask that a protocol update is using as well, if there is no matching mask they default to the standard classful network mask. So putting these other netmasks on the router should fix the problem since then the router will know which updates belong in which subnet. I haven't tried it, but it seems like it would work to me :-) At 01:45 AM 3/7/01, you wrote: you'll just have to use the 24 bit masks that are default in the IGRP routing protocol. Or establish and redistribute static routes into your IGRP routing process. see http://www.cisco.com/warp/public/105/52.html for some other direction -e- Prasanna [EMAIL PROTECTED] wrote in message 983mlr$unf$[EMAIL PROTECTED]">news:983mlr$unf$[EMAIL PROTECTED]... Hi Guys I was trying to redistribute from OSPF Domain ( has variable subnets ,/24, /28 , /26 /25 ) to IGRP domain ( /24 ) , i got severe masking issue as IGRP is classfull and i could able to redistribute only /24 subnets .I was trying to implement summary address with /24 towards IGRP but i could not able to summarize the subnets. OSPF subnets - 192.168.112.0/24 192.168.113.192/26 192. 168.114.128/25 192.168.115. 240/28 IGRP subnet - 192.168.110.0/24 192.168.111.0/24 What is the elegant way to solve this problem _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: classless to classfull routing issue
I don't think that would work because I remember reading somewhere that it compares the subnet to the subnet on the interface that the update was received on so I don't think the loopback with different subnet would help. Cory -Original Message- From: Curtis Call [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 07, 2001 9:44 AM To: [EMAIL PROTECTED] Subject: Re: classless to classfull routing issue Once solution would be to define multiple subinterfaces with the respective /28, /26, and /25 network masks. Classful protocols assume that the subnet mask being used on the router is the subnet mask that a protocol update is using as well, if there is no matching mask they default to the standard classful network mask. So putting these other netmasks on the router should fix the problem since then the router will know which updates belong in which subnet. I haven't tried it, but it seems like it would work to me :-) At 01:45 AM 3/7/01, you wrote: you'll just have to use the 24 bit masks that are default in the IGRP routing protocol. Or establish and redistribute static routes into your IGRP routing process. see http://www.cisco.com/warp/public/105/52.html for some other direction -e- Prasanna [EMAIL PROTECTED] wrote in message 983mlr$unf$[EMAIL PROTECTED]">news:983mlr$unf$[EMAIL PROTECTED]... Hi Guys I was trying to redistribute from OSPF Domain ( has variable subnets ,/24, /28 , /26 /25 ) to IGRP domain ( /24 ) , i got severe masking issue as IGRP is classfull and i could able to redistribute only /24 subnets .I was trying to implement summary address with /24 towards IGRP but i could not able to summarize the subnets. OSPF subnets - 192.168.112.0/24 192.168.113.192/26 192. 168.114.128/25 192.168.115. 240/28 IGRP subnet - 192.168.110.0/24 192.168.111.0/24 What is the elegant way to solve this problem _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: classless to classfull routing issue
yes, but only if you had the available subnets in the 192.168.113.x, 192.168.114.x , and 192.168.115.x range. (You can't use the subnets that are already defined by OSPF) What you really want is to have are those particular routes with the proper masks advertised throughout the IGRP network. Thus, if the subnets were indeed available... you could on the IGRP router define ip subnet-zero interface loopback1 ip address 192.168.113.1 255.255.255.192 interface loopback2 ip address 192.168.114.1 255.255.255.128 interface loopback3 ip address 192.168.115.1 255.255.255.240 router ospf 1 yada yada yada router igrp 1 redistribute ospf 1 metric metrics metrics metrics network 192.168.113.0 network 192.168.114.0 network 192.168.115.0 which would then define the fixed mask length for those networks in the IGRP AS, same as the static routes would do. - Original Message - From: Curtis Call [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 07, 2001 7:43 AM Subject: Re: classless to classfull routing issue Once solution would be to define multiple subinterfaces with the respective /28, /26, and /25 network masks. Classful protocols assume that the subnet mask being used on the router is the subnet mask that a protocol update is using as well, if there is no matching mask they default to the standard classful network mask. So putting these other netmasks on the router should fix the problem since then the router will know which updates belong in which subnet. I haven't tried it, but it seems like it would work to me :-) At 01:45 AM 3/7/01, you wrote: you'll just have to use the 24 bit masks that are default in the IGRP routing protocol. Or establish and redistribute static routes into your IGRP routing process. see http://www.cisco.com/warp/public/105/52.html for some other direction -e- Prasanna [EMAIL PROTECTED] wrote in message 983mlr$unf$[EMAIL PROTECTED]">news:983mlr$unf$[EMAIL PROTECTED]... Hi Guys I was trying to redistribute from OSPF Domain ( has variable subnets ,/24, /28 , /26 /25 ) to IGRP domain ( /24 ) , i got severe masking issue as IGRP is classfull and i could able to redistribute only /24 subnets .I was trying to implement summary address with /24 towards IGRP but i could not able to summarize the subnets. OSPF subnets - 192.168.112.0/24 192.168.113.192/26 192. 168.114.128/25 192.168.115. 240/28 IGRP subnet - 192.168.110.0/24 192.168.111.0/24 What is the elegant way to solve this problem _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: classless to classfull routing issue
I don't think that there is a solution to this. IGRP is classfull routing protocol and you can't change it's behavior. How about changing your IGRP to EIGRP? Any problems with this like conversion to all Cisco equipment? My 0.02c. Arthur From: "Prasanna" [EMAIL PROTECTED] Reply-To: "Prasanna" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: classless to classfull routing issue Date: Tue, 6 Mar 2001 15:41:27 -0500 Hi Guys I was trying to redistribute from OSPF Domain ( has variable subnets ,/24, /28 , /26 /25 ) to IGRP domain ( /24 ) , i got severe masking issue as IGRP is classfull and i could able to redistribute only /24 subnets .I was trying to implement summary address with /24 towards IGRP but i could not able to summarize the subnets. OSPF subnets - 192.168.112.0/24 192.168.113.192/26 192. 168.114.128/25 192.168.115. 240/28 IGRP subnet - 192.168.110.0/24 192.168.111.0/24 What is the elegant way to solve this problem _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
