From: Jonny English (redkidneybeans@gmail.com)
Date: Wed Aug 20 2008 - 08:18:16 ART
Hi,
I was wondering if some could please help me understand this task. I got the
aggregate part, but i'm confused as to why the distance command is used on
R4
I don't understand why the distance bgp 20 200 255 command is used on R4.
Is it because we want the default route advertised into OSPF in an earlier
question to be more preferred, so by changing the distance of the bgp routes
the OSPF default route is preferred?
So the distance is used to reject the aggregate in AS 100?
Rack1R4#sh ip bgp
BGP table version is 17, local router ID is 150.1.4.4
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 28.119.16.0/24 204.12.1.254 0 0 54 i
*> 28.119.17.0/24 204.12.1.254 0 0 54 i
*> 112.0.0.0 204.12.1.254 0 54 50 60 i
*> 113.0.0.0 204.12.1.254 0 54 50 60 i
*> 116.0.0.0 204.12.1.254 0 54 i
*> 117.0.0.0 204.12.1.254 0 54 i
*> 118.0.0.0 204.12.1.254 0 54 i
*> 119.0.0.0 204.12.1.254 0 54 i
r> 164.1.0.0 0.0.0.0 32768 i
r 150.1.3.3 0 200 i
s> 164.1.3.0/24 150.1.3.3 0 0 200 i
*> 205.90.31.0 150.1.3.3 0 200 254 ?
*> 220.20.3.0 150.1.3.3 0 200 254 ?
*> 222.22.2.0 150.1.3.3 0 200 254 ?
Rack1R4#sh run | s router bgp
router bgp 100
aggregate-address 164.1.0.0 255.255.0.0 summary-only
distance bgp 20 200 255
Thanks for the help
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