Re: Routing problem

May 05, 2006 2 Replies

Hi, all I have a routing problem inside my network when i do a traceroute to anybody in the world i get lost some where on the way.


1: tash.one2net.co.ug (41.220.14.30) 0.994ms pmtu
1500 1: 41.220.14.2 (41.220.14.2) 72.276ms 2: 41.220.14.1 (41.220.14.1) asymm 1
52.407ms 3: 217-212-242-2.customer.teliacarrier.com (217.212.242.2) asymm 2
149.408ms 4: 217-212-242-1.customer.teliacarrier.com (217.212.242.1) asymm 3
607.288ms 5: kbn-b1-link.telia.net (213.248.97.89) asymm 4
602.379ms 6: kbn-bb2-pos0-2-0.telia.net (213.248.65.17) 600.423ms 7: hbg-bb2-pos5-0-0.telia.net (213.248.65.125) 574.590ms 8: ffm-bb2-pos7-0-0.telia.net (213.248.65.121) 579.431ms 9: ffm-b3-pos4-3-0.telia.net (213.248.64.162) 592.477ms
10: france-telecom-02189-ffm-b3.telia.net (213.248.77.206) asymm 9
723.994ms
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12: so-0-1-0-0.loncr4.London.opentransit.net (193.251.154.89) asymm 11
621.402ms
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31: no reply Too many hops: pmtu 1500 Resume: pmtu 1500 napster@tash:~> But i finally view the page. When i tried looking Glassess from outside in the world i realised that the moment i hit the router interface to the external i can't see any of the addresses inside my network. Query: bgp Addr: 41.220.14.30

BGP routing table entry for 41.220.14.0/23, version 118631772 Paths: (2 available, best #2, table Default-IP-Routing-Table) Not advertised to any peer 1299 29032, (received & used) 64.230.195.152 (metric 2380) from 206.108.96.18 (206.108.96.18) Origin incomplete, metric 0, localpref 110, valid, internal Community: 577:55 577:5602 577:11000 577:21900 Originator: 64.230.195.152, Cluster list: 206.108.96.18,



206.108.96.19, 206.108.96.230 1299 29032, (received & used) 64.230.195.152 (metric 2380) from 206.108.96.17 (206.108.96.17) Origin incomplete, metric 0, localpref 110, valid, internal, best Community: 577:55 577:5602 577:11000 577:21900 Originator: 64.230.195.152, Cluster list: 206.108.96.17,
206.108.96.19, 206.108.96.230 the traceroute statics from looking glasses are

Results of query: Router: bergenS-gw.uninett.no Command: trace one2net.co.ug



Translating "one2net.co.ug"...domain server (129.177.30.3) (158.38.0.168)



Translating "one2net.co.ug"...domain server (129.177.30.3) [OK]



Type escape sequence to abort. Tracing the route to one2net.co.ug (41.220.14.14)



1 bergen-gw3.uninett.no (158.37.8.3) 0 msec 0 msec 0 msec 2 bergen-gw.uninett.no (158.37.1.161) 0 msec 0 msec 0 msec 3 oslo-gw2.uninett.no (128.39.3.69) 8 msec 8 msec 8 msec 4 oslo-gw1.uninett.no (128.39.46.253) 8 msec 4 msec 4 msec 5 no-gw.nordu.net (193.10.68.101) [AS 2603] 8 msec 8 msec 4 msec 6 se-kth.nordu.net (193.10.68.29) [AS 2603] 12 msec 16 msec 16 msec 7 s-b4-link.telia.net (213.248.97.93) 16 msec 12 msec 12 msec 8 s-bb2-pos7-2-0.telia.net (213.248.66.13) 16 msec 16 msec 16 msec 9 kbn-bb2-link.telia.net (213.248.65.166) 28 msec 28 msec 32 msec 10 kbn-b1-pos14-0.telia.net (213.248.65.18) 24 msec 24 msec 28 msec 11 bushnet-111207-kbn-b1.c.telia.net (213.248.97.90) 32 msec 32 msec
32 msec 12 217-212-242-2.customer.teliacarrier.com (217.212.242.2) 576 msec
572 msec 568 msec 13 217-212-242-13.customer.teliacarrier.com (217.212.242.13) 584 msec
576 msec 572 msec 14 * * * 15 * * * and 217.212.242.13 is the router interface. external

what could be causing this. thanks for the help in advance



Hi Ronnie,

It could be that the devices past the last one are not configured to respond to Traceroute. It seems more and more common today to remove all Non-Network Operational Device (IE all Servers) from replying to a Traceroute or Ping, and to only allow Network specific devices to respond.

Good luck..............pk.

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