Redistribution Practice - a couple of thoughts [7:55748]
in no particular order of importance, and for no particular reason. 1) redistributing classful protocols into classless protocols and visa versa a) getting smaller subnets to match a longer boundary ( subnets with longer prefixes ) b) dealing with larger subnets than the classless boundary permits ( dealing with shorter prefixes ) 2) filtering can be accomplished by: a) distribute-lists b) route-maps c) limiting advertisements to certain interfaces d) limiting advertisements to certain neighbors 3) distribute-lists can reference: a) access-lists b) particular neighbors ( gateways ) c) ip prefix-lists 4) route-maps can: a) reference access-lists b) reference interfaces c) reference ip prefix-lists d) reference metric values ( intriguing - have to look into this ) e) route tags 5) additionally, different protocols have their bells a) ospf - summary-address ( to summarize the routes redistributed into ospf ) b) others - match ospf metrics, route types e.g. E1, E2 c) others - match IS-IS route level types e.g. level-1, level-2 just some idle thoughts -- www.chuckslongroad.info like my web site? take the survey! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55748&t=55748 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribution Practice - a couple of thoughts [7:55748]
an addition to the mix ""The Long and Winding Road"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... in no particular order of importance, and for no particular reason. 1) redistributing classful protocols into classless protocols and visa versa a) getting smaller subnets to match a longer boundary ( subnets with longer prefixes ) b) dealing with larger subnets than the classless boundary permits ( dealing with shorter prefixes ) 2) filtering can be accomplished by: a) distribute-lists b) route-maps c) limiting advertisements to certain interfaces d) limiting advertisements to certain neighbors 3) distribute-lists can reference: a) access-lists b) particular neighbors ( gateways ) c) ip prefix-lists 4) route-maps can: a) reference access-lists b) reference interfaces c) reference ip prefix-lists d) reference metric values ( intriguing - have to look into this ) e) route tags 5) additionally, different protocols have their bells a) ospf - summary-address ( to summarize the routes redistributed into ospf ) b) others - match ospf metrics, route types e.g. E1, E2 c) others - match IS-IS route level types e.g. level-1, level-2 6) media dependent issues a) split horizon ( NMBA ) 7) redistribution loops a) when redistribution occurs at two or more different points in a multihomed network just some idle thoughts > > -- > > www.chuckslongroad.info > like my web site? > take the survey! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55755&t=55748 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribution Practice - a couple of thoughts [7:55748]
Great post Chuck. Possible addition - under section 2 - Filtering Does it make sense to include the Passive Interface option as a way to filter? If not under that section, then how would one define/lable this option? -chris "The Long and Winding Road" @groupstudy.com on 10/16/2002 08:09:50 PM Please respond to "The Long and Winding Road" Sent by: [EMAIL PROTECTED] To: [EMAIL PROTECTED] cc: Subject: Re: Redistribution Practice - a couple of thoughts [7:55748] an addition to the mix ""The Long and Winding Road"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... in no particular order of importance, and for no particular reason. 1) redistributing classful protocols into classless protocols and visa versa a) getting smaller subnets to match a longer boundary ( subnets with longer prefixes ) b) dealing with larger subnets than the classless boundary permits ( dealing with shorter prefixes ) 2) filtering can be accomplished by: a) distribute-lists b) route-maps c) limiting advertisements to certain interfaces d) limiting advertisements to certain neighbors 3) distribute-lists can reference: a) access-lists b) particular neighbors ( gateways ) c) ip prefix-lists 4) route-maps can: a) reference access-lists b) reference interfaces c) reference ip prefix-lists d) reference metric values ( intriguing - have to look into this ) e) route tags 5) additionally, different protocols have their bells a) ospf - summary-address ( to summarize the routes redistributed into ospf ) b) others - match ospf metrics, route types e.g. E1, E2 c) others - match IS-IS route level types e.g. level-1, level-2 6) media dependent issues a) split horizon ( NMBA ) 7) redistribution loops a) when redistribution occurs at two or more different points in a multihomed network just some idle thoughts > > -- > > www.chuckslongroad.info > like my web site? > take the survey! This transmission may contain information that is privileged, confidential and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55786&t=55748 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]