Ok got ya. The key part that i was missing is option will only remove private-as's up to the 1st non-private as.
Thanks Aaron On Mon, Jul 25, 2011 at 3:30 PM, Dwann Hall <[email protected]> wrote: > yes, confederation will appear as one unified AS to external peers w/o > you having to specify remove private-as. yes, the remove private-as > option will only remove private-as's up to the 1st non-private > as...remove private-as is used to remove private as from as path for > outbound announements - think service provider advertising aggregate > route for clients, clients advertising more specific routes to service > provider, the service provider will strip the private as before > advertising aggregate routes to other providers. -d > > On Mon, Jul 25, 2011 at 3:17 PM, Aaron Moreck <[email protected]> wrote: > > Is my understanding correct as i outlined in the 2 bullet points? > > Also the remove-private-as is for out going updates correct? > > > > On Mon, Jul 25, 2011 at 1:37 PM, Dwann Hall <[email protected]> > wrote: > >> > >> ISP supporting colo environments via eBGP w/ private AS would be a > >> good place to use the remove-private-as. -d > >> > >> On Mon, Jul 25, 2011 at 1:12 PM, Aaron Moreck <[email protected]> > wrote: > >> > I am struggling to see the the use of this command. Here is my > >> > understanding, please correct me if I am wrong > >> > > >> > 1.) When you use confederations, the Sub AS's are removed from the > AS > >> > path when advertising to eBGP peers. If Sub AS's are private then > they > >> > wont > >> > be seen by the eBGP neighbor by default. > >> > 2.) The "remove-private-as" does not remove the private AS if there > >> > are > >> > non-private AS's already in the AS Path. For example if the AS Path > >> > was > >> > (123 7018 65055) and 65055 was the AS of the router advertising to > >> > EBGP > >> > with the remove-private-as option, it would NOT remove the 65055 > >> > because of > >> > the 123 and 7018 present in the AS PATH. > >> > > >> > So my question is in what circumstance would the remove-private-as be > >> > useful? > >> > > >> > Thanks > >> > > >> > Aaron > >> > _______________________________________________ > >> > For more information regarding industry leading CCIE Lab training, > >> > please visit www.ipexpert.com > >> > > >> > Are you a CCNP or CCIE and looking for a job? Check out > >> > www.PlatinumPlacement.com > >> > > > > > > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
