From: hulbertj@comcast.net
Date: Tue May 10 2005 - 11:42:43 GMT-3
Long,
Do a show ip bgp on R3. How many routes is R3 receiving from his EBGP peer? Next how many of these routes is R3 actually selecting as it's best path (*>)? R3 will only advertise the routes that R3 would actually use, not every route that he receives.
Jerry
-------------- Original message --------------
> Thanks for the reply Brian , but I don't understand , why R5 is only
> receiving 5 from R3 but 10 from R6 , both R3 and R6 are reflector
> clients of R5 , I could understand if R5 was receiving the same routes
> from both R3 and R6 , but only passing to his (R5) upstream Ebgp
> neighbors , but in lab 1 this isn't the case ?? Don't suppose you got a
> screen shot of that lab 1 bgp table on R5 do you ? If you look at the
> topology , map , I just don't see why R5 doesn't see the same routes
> from R3 and R6
>
> TIA , Long
>
> -----Original Message-----
> From: Brian McGahan [mailto:bmcgahan@internetworkexpert.com]
> Sent: Monday, May 09, 2005 8:05 PM
> To: Long Kwok; ccielab@groupstudy.com
> Subject: RE: IEWB Lab 1 Bgp Table Interpretation Question
>
> Long,
>
> Only the bestpath is candidate for advertisement.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
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>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Long Kwok
> > Sent: Monday, May 09, 2005 8:37 PM
> > To: ccielab@groupstudy.com
> > Subject: IEWB Lab 1 Bgp Table Interpretation Question
> >
> > The IE sample lab 1 , the bgp seems to be very basic config , but I am
> > not sure of one , thing , and config looks identical to IE solution
> > guide , everything is working fine I just don't understand something ,
> > below is output of show ip bgp summary command on R5 who is the Route
> > reflector for R3 , R4 , R6 . the question is , if you look below
> > 150.1.6.6 (R6) is a route reflector client of R5 , as is 183.1.0.3
> (R3)
> > , why does R5 only learn 5 prefixes from R3 and 10 prefixes from R6 ?
> > Both R3 and R6 in there bgp tables have 10 prefixes learned from the
> > backbone BGP AS 54 ??
> >
> >
> >
> > TIA , Long
> >
> >
> >
> > r5#sbn
> >
> > Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
> > State/PfxRcd
> >
> > 150.1.4.4 4 100 1447 1472 149 0 0 23:59:16
> > 0
> >
> > 150.1.6.6 4 100 1459 1465 149 0 0 23:58:42
> > 10
> >
> > 183.1.0.3 4 100 1471 1458 149 0 0 23:55:34
> > 5
> >
> > 183.1.58.8 4 200 1420 1431 149 0 0 22:32:36
> > 1
> >
> > r5#
> >
> >
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