Default-information originate [7:38757]
Hi, Regarding the command "default-information originate", I understand that it will cause the router to advertise the default route into OSPF / IS-IS domain. Without this, by default, OSPF / IS-IS will not advertise the default route to the other routers. As for the [always] keyword for the "default-information originate" command, I know that it only works for OSPF, but not IS-IS. Is this the only difference? Is there anything else that I may be missing? I read up in Jeff Doyle (TCP/IP Vol 1), but it confuses me even more... Jeff states that "if there's more than one default router, you definitely don't want the [always] keyword. but why? Best Regards, Hunt Lee System Engineer WebCentral Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38757&t=38757 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Default-information originate [7:38757]
because the always keyword will make the router advertise the default route even if the link is down. giving false info to rest of network. It be better to let the good router handle default traffic. -- RFC 1149 Compliant. Get in my head: http://sar.dynu.com ""Hunt Lee"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > Regarding the command "default-information originate", I understand that it > will cause the router to advertise the default route into OSPF / IS-IS > domain. Without this, by default, OSPF / IS-IS will not advertise the > default route to the other routers. > > As for the [always] keyword for the "default-information originate" command, > I know that it only works for OSPF, but not IS-IS. Is this the only > difference? Is there anything else that I may be missing? > > I read up in Jeff Doyle (TCP/IP Vol 1), but it confuses me even more... > > Jeff states that "if there's more than one default router, you definitely > don't want the [always] keyword. but why? > > Best Regards, > Hunt Lee > System Engineer > WebCentral Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38765&t=38757 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Default-information originate [7:38757]
Thanks guys!!! so, if the ASBR is default-free (hasn't got a default), does it mean that one should only use "default-information originate" without the [always] keyword, because the ASBR doesn't have a local default to meet the [always] condition? Thanks again. Best Regards, Hunt Lee System Engineer WebCentral ""Steven A. Ridder"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > because the always keyword will make the router advertise the default route > even if the link is down. giving false info to rest of network. It be > better to let the good router handle default traffic. > > -- > > RFC 1149 Compliant. > Get in my head: > http://sar.dynu.com > > > ""Hunt Lee"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Hi, > > > > Regarding the command "default-information originate", I understand that > it > > will cause the router to advertise the default route into OSPF / IS-IS > > domain. Without this, by default, OSPF / IS-IS will not advertise the > > default route to the other routers. > > > > As for the [always] keyword for the "default-information originate" > command, > > I know that it only works for OSPF, but not IS-IS. Is this the only > > difference? Is there anything else that I may be missing? > > > > I read up in Jeff Doyle (TCP/IP Vol 1), but it confuses me even more... > > > > Jeff states that "if there's more than one default router, you definitely > > don't want the [always] keyword. but why? > > > > Best Regards, > > Hunt Lee > > System Engineer > > WebCentral Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=39012&t=38757 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
