From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Wed Dec 15 2004 - 20:24:33 GMT-3
Is there traffic engineering involved? If so how does the next hop
value affect this?
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
> Mike Flanagan
> Sent: Wednesday, December 15, 2004 1:22 PM
> To: Ccielab
> Subject: IE Lab 12 Section 6.1 - 6.8 Possibly Not Needing Next Hop
Self on
> R1
>
> Hello,
>
> In this lab the solutions guide has us configure next-hop-self on R1
and
> I
> am not sure why. R1 is not at the edge of this network and AS200 has
full
> IP
> connectivity within itself. Withought configuring next-hop-self on R1
I
> appear to have full BGP sonnectivity. Is this a typo in the solutions
> guide
> or am I missing something ?
>
>
> Thanks,
>
> Mike F.
>
>
> Rack2R3#sh ip bgp
> BGP table version is 24, local router ID is 150.2.3.3
> 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
> * i28.119.16.0/24 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i28.119.17.0/24 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i112.0.0.0 129.2.17.7 100 0 100 54 50
60
> i
> *>i 129.2.23.2 0 100 0 100 54 50
60
> i
> * i113.0.0.0 129.2.17.7 100 0 100 54 50
60
> i
> *>i 129.2.23.2 0 100 0 100 54 50
60
> i
> * i114.0.0.0 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i115.0.0.0 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i116.0.0.0 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i117.0.0.0 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> * i118.0.0.0 129.2.17.7 100 0 100 54 i
> Network Next Hop Metric LocPrf Weight Path
> *>i 129.2.23.2 0 100 0 100 54 i
> * i119.0.0.0 129.2.17.7 100 0 100 54 i
> *>i 129.2.23.2 0 100 0 100 54 i
> *>i205.90.31.0 129.2.23.2 0 100 0 254 ?
> *>i220.20.3.0 129.2.23.2 0 100 0 254 ?
> *>i222.22.2.0 129.2.23.2 0 100 0 254 ?
> Rack2R3# ping 129.2.23.2
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.23.2, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 20/20/20
ms
> Rack2R3#ping 129.2.17.7
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.17.7, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 16/18/20
ms
> Rack2R3#ping 129.2.23.2
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.23.2, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/20
ms
> Rack2R3#
>
> Rack2R1#sh ip bgp
> BGP table version is 14, local router ID is 150.2.1.1
> 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
> * i28.119.16.0/24 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i28.119.17.0/24 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i112.0.0.0 129.2.23.2 0 100 0 100 54 50
60
> i
> *>i 129.2.17.7 100 0 100 54 50
60
> i
> * i113.0.0.0 129.2.23.2 0 100 0 100 54 50
60
> i
> *>i 129.2.17.7 100 0 100 54 50
60
> i
> * i114.0.0.0 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i115.0.0.0 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i116.0.0.0 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i117.0.0.0 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> * i118.0.0.0 129.2.23.2 0 100 0 100 54 i
> Network Next Hop Metric LocPrf Weight Path
> *>i 129.2.17.7 100 0 100 54 i
> * i119.0.0.0 129.2.23.2 0 100 0 100 54 i
> *>i 129.2.17.7 100 0 100 54 i
> *>i205.90.31.0 129.2.23.2 0 100 0 254 ?
> *>i220.20.3.0 129.2.23.2 0 100 0 254 ?
> *>i222.22.2.0 129.2.23.2 0 100 0 254 ?
> Rack2R1# ping 129.2.17.7
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.17.7, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
> Rack2R1#ping 129.2.23.2
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.23.2, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 32/34/36
ms
> Rack2R1#
>
> Rack2R5#sh ip bgp
> BGP table version is 27, local router ID is 150.2.5.5
> 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
> * i28.119.16.0/24 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 0 100 0 54 i
> * i28.119.17.0/24 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 0 100 0 54 i
> * i112.0.0.0 129.2.46.6 0 100 0 54 50 60
i
> *>i 129.2.58.8 100 0 54 50 60
i
> * i113.0.0.0 129.2.46.6 0 100 0 54 50 60
i
> *>i 129.2.58.8 100 0 54 50 60
i
> * i114.0.0.0 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 100 0 54 i
> * i115.0.0.0 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 100 0 54 i
> * i116.0.0.0 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 100 0 54 i
> * i117.0.0.0 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 100 0 54 i
> * i118.0.0.0 129.2.46.6 0 100 0 54 i
> Network Next Hop Metric LocPrf Weight Path
> *>i 129.2.58.8 100 0 54 i
> * i119.0.0.0 129.2.46.6 0 100 0 54 i
> *>i 129.2.58.8 100 0 54 i
> *>i205.90.31.0 129.2.58.8 100 0 200 254 ?
> * i 150.2.4.4 0 100 0 200 254 ?
> *>i220.20.3.0 129.2.58.8 100 0 200 254 ?
> * i 150.2.4.4 0 100 0 200 254 ?
> *>i222.22.2.0 129.2.58.8 100 0 200 254 ?
> * i 150.2.4.4 0 100 0 200 254 ?
> Rack2R5# ping 129.2.46.6
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.46.6, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 56/57/60
ms
> Rack2R5#ping 129.2.58.8
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 129.2.58.8, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
> Rack2R5#
>
>
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