RE: EIGRP good design guidelines needed
Doh typo command should be -Original Message- From: Williamson, Paul [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 02, 2000 10:46 AM To: [EMAIL PROTECTED] Subject: EIGRP good design guidelines needed Hi Not sure if i can do this (there is no problem that i am trying to solve, just wondering if its good design principles) Basically i have 2 routers in a core. One router could connect to networks. 192.168.115.0 /30 192.168.115.4 /30 192.168.115.8 /30 192.168.115.12 /30 The other to 192.168.115.16 /30 192.168.115.20 /30 192.168.115.24 /30 192.168.115.28 /30 Running EIGRP, should i auto-summarise or manually summarise I believe if manually summarising is better; then for one router the summary command would be ip summary-address eigrp 20 192.168.115.0 255.255.240.0 What would the command be on the second core router ? I haven't any configs to attach, its purely speculation at the moment Thanks for your time -Paul ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: EIGRP good design guidelines needed
Doh typo command should be ip summary-address eigrp 20 192.168.115.0 255.255.255.240 TIA -Paul -Original Message- From: Williamson, Paul [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 02, 2000 10:46 AM To: [EMAIL PROTECTED] Subject: EIGRP good design guidelines needed Hi Not sure if i can do this (there is no problem that i am trying to solve, just wondering if its good design principles) Basically i have 2 routers in a core. One router could connect to networks. 192.168.115.0 /30 192.168.115.4 /30 192.168.115.8 /30 192.168.115.12 /30 The other to 192.168.115.16 /30 192.168.115.20 /30 192.168.115.24 /30 192.168.115.28 /30 Running EIGRP, should i auto-summarise or manually summarise I believe if manually summarising is better; then for one router the summary command would be ip summary-address eigrp 20 192.168.115.0 255.255.240.0 What would the command be on the second core router ? I haven't any configs to attach, its purely speculation at the moment Thanks for your time -Paul ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: EIGRP good design guidelines needed
ip summary-address eigrp 20 192.168.115.16 255.255.255.240 (which would summ to 115.31) "Williamson, Paul" wrote: > Doh > typo command should be > ip summary-address eigrp 20 192.168.115.0 255.255.255.240 > > TIA > -Paul > > -Original Message- > From: Williamson, Paul [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 02, 2000 10:46 AM > To: [EMAIL PROTECTED] > Subject: EIGRP good design guidelines needed > > Hi > Not sure if i can do this (there is no problem that i am trying to solve, > just wondering if its good design principles) > > Basically i have 2 routers in a core. One router could connect to networks. > 192.168.115.0 /30 > 192.168.115.4 /30 > 192.168.115.8 /30 > 192.168.115.12 /30 > > The other to > 192.168.115.16 /30 > 192.168.115.20 /30 > 192.168.115.24 /30 > 192.168.115.28 /30 > > Running EIGRP, should i auto-summarise or manually summarise > I believe if manually summarising is better; then for one router the summary > command would be > ip summary-address eigrp 20 192.168.115.0 255.255.240.0 > > What would the command be on the second core router ? > > I haven't any configs to attach, its purely speculation at the moment > Thanks for your time > -Paul > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- Lawrence Dwyer, MCSE CCNA Project Officer Telemedicine Advanced Technology Research Center (301) 619-7946 ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: EIGRP good design guidelines needed
""Williamson, Paul"" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Running EIGRP, should i auto-summarise or manually summarise > I believe if manually summarising is better; then for one router the summary > command would be > ip summary-address eigrp 20 192.168.115.0 255.255.240.0 There are other good, sound reasons for performing manual address summarisation, such as for the creation of a routing hierarchy, and particularly in the case of E-IGRP, to limit query scoping, for otherwise you could end up with router queries being propagated throughout the AS, searching for feasible successors. -- Edward Solomon CCNA, CCSI Senior I/T Specialist Networking Solutions IBM Canada Ltd. - Learning Services Tel.: (905) 316-3241 Fax: (905) 316-3101 E-mail: [EMAIL PROTECTED] Internet: http://www.can.ibm.com/services/learning/net_internet.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: EIGRP good design guidelines needed
I see 2 issues here: 1st, you need to configure manual summarization to solve your problem. I remember seeing somewhere in my studies something that implies that EIGRP autosummarizes at any bit boundary. Not true - auto-summary is only at major network boundaries, and since both of your interfaces are in the same major network (class C 192.168.115.0) only manual summarization will accomplish this. (reference: http://www.cisco.com/univercd/cc/td/doc/product/software/ios112/112cg_cr/5cbook/5ciprout.htm) 2nd, since manual summarization does your job, can/should you turn off auto summarization? You don't have to, but you can. Auto-summary won't accomplish anything in your scenario, but there may be other interfaces that you didn't mention that could take advantage of it. According to the same reference as above, you can configure manual suummarization with auto-summary still on, but there are people that turn it off & control all suummarization. You HAVE to turn off auto-summary if you have discontiguous subnets, so you don't get an advertisement to the same major networks from 2 different places. >>> "Williamson, Paul" <[EMAIL PROTECTED]> 08/02 2:45 AM >>> Hi Not sure if i can do this (there is no problem that i am trying to solve, just wondering if its good design principles) Basically i have 2 routers in a core. One router could connect to networks. 192.168.115.0 /30 192.168.115.4 /30 192.168.115.8 /30 192.168.115.12 /30 The other to 192.168.115.16 /30 192.168.115.20 /30 192.168.115.24 /30 192.168.115.28 /30 Running EIGRP, should i auto-summarise or manually summarise I believe if manually summarising is better; then for one router the summary command would be ip summary-address eigrp 20 192.168.115.0 255.255.240.0 What would the command be on the second core router ? I haven't any configs to attach, its purely speculation at the moment Thanks for your time -Paul ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
