[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

routing problem to ftp.iglu.org.il





  Hi,




   It seems that the net for that server is being advertised in a such way
that all access to it from outside AT&T or actcom is going via abroad:

Look:

Israel-IX#sh ip bgp 192.117.122.34
BGP routing table entry for 192.117.96.0/19, version 112897
Paths: (4 available, best #4)
...

  8584 4148, (received-only)
    192.114.63.86 from 192.114.63.86 (206.49.94.71)
      Origin IGP, localpref 100, valid, external
  8584 4148, (received-only)
    192.114.63.142 from 192.114.63.142 (212.150.64.4)
      Origin IGP, localpref 100, valid, external
  9116 4148 4148 4148, (received-only)
    192.114.63.146 from 192.114.63.146 (212.199.26.254)
      Origin IGP, localpref 100, valid, external
  4148 4148 13278 13278, (received & used)
    192.114.63.74 from 192.114.63.74 (212.199.63.50)
      Origin IGP, metric 0, localpref 100, valid, external, best

Notice that the only accepted route is via actcom, and note that they
advertise 192.117.96.0/19.

Now, from abroad, there are 25 routes, see below the whole list for
explanation:


BGP routing table entry for 192.117.120.0/21, version 2213269
Paths: (25 available, best #2)
  Not advertised to any peer
  5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148 4148
4148 4148
    209.1.220.102 from 209.1.220.102 (209.1.220.102)
      Origin incomplete, localpref 1000, valid, internal
  5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148 4148
4148 4148
    209.1.40.51 from 209.1.40.51 (209.1.40.51)
      Origin incomplete, localpref 1000, valid, internal, best
  5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148 4148
4148 4148
    209.1.40.51 from 209.1.220.224 (209.1.40.51)
      Origin incomplete, localpref 1000, valid, internal
      Originator: 209.1.40.51, Cluster list: 0.0.16.125
  5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148 4148
4148 4148
    209.1.220.102 from 209.1.220.89 (209.1.220.102)
      Origin incomplete, localpref 1000, valid, internal
      Originator: 209.1.220.102, Cluster list: 0.0.4.186
  5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148 4148
4148 4148
    209.1.220.102 from 209.1.220.166 (209.1.220.102)
      Origin incomplete, localpref 1000, valid, internal
      Originator: 209.1.220.102, Cluster list: 0.0.4.216
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.72 from 209.1.40.72 (209.1.40.72)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.174 from 209.1.220.174 (209.1.220.174)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.203 from 209.1.220.203 (209.1.220.203)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.126 from 209.1.220.126 (209.1.220.126)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.156 from 209.1.220.156 (209.1.220.156)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.139 from 209.1.220.139 (209.1.220.139)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.133 from 209.1.220.133 (209.1.220.133)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.141 from 209.1.40.141 (209.1.40.141)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.40 from 209.1.220.40 (209.1.220.40)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.66 from 209.1.220.66 (209.1.220.66)
      Origin incomplete, localpref 1000, valid, internal
  3561 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.242 from 209.1.220.242 (209.1.220.242)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.129 from 209.1.40.129 (209.1.40.129)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.95 from 209.1.220.95 (209.1.220.95)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.233 from 209.1.40.233 (209.1.40.233)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.116 from 209.1.220.116 (209.1.220.116)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.52 from 209.1.40.52 (209.1.40.52)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.63 from 209.1.40.63 (209.1.40.63)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.194 from 209.1.220.194 (209.1.220.194)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.220.107 from 209.1.220.107 (209.1.220.107)
      Origin incomplete, localpref 1000, valid, internal
  701 5511 8584 8584 8584 13264 13264 13264 1833 1833 1299 2686 3339 4148
4148 4148 4148
    209.1.40.201 from 209.1.40.201 (209.1.40.201)
      Origin incomplete, localpref 1000, valid, internal


As you can see, a more specific route, aka, 192.117.120.0/21 is being
advertised to the world. Since this is the case, all Israeli ISPs will
chose their international links in order to reach ftp.iglu.org.il (or
whatever is on 192.117.12[0-7].[0-255] (that is 192.117.120.0/21).

This needs to be fixed by actcom. Notice that the route abroad also ends
at "3339 4148", which means "AT&T Actcom". A typical tracroute to
ftp.iglu.org.il from Machba looks like:

traceroute to ftp.iglu.org.il (192.117.122.34), 30 hops max, 38 byte
packets
 1  c6509-16 (132.66.17.254)  0.754 ms  0.195 ms  0.196 ms
 2  * * *
 3  tel-aviv (132.66.4.1)  1.251 ms  1.214 ms  1.329 ms
 4  gp1-tau-mag.ilan.net.il (128.139.203.22)  182.786 ms  428.374 ms
209.165 ms
 5  gp0-gp1-mag.ilan.net.il (128.139.203.2)  5.291 ms  5.244 ms  5.445 ms
 6  iucc.uk1.uk.geant.net (62.40.103.165)  82.088 ms  81.640 ms  101.985
ms
 7  infonet-gw.uk1.uk.geant.net (62.40.103.154)  83.478 ms  104.166 ms
106.163 ms
 8  london2.gb.eqip.net (195.90.64.26)  87.079 ms  83.050 ms  83.517 ms
 9  linx1nap-1-3.lo.uk.attglobal.net (152.158.20.153)  85.725 ms  103.142
ms  106.300 ms
10  lond1br2.lo.uk.prserv.net (152.158.20.2)  154.515 ms  239.567 ms
232.633 ms
11  152.158.76.66 (152.158.76.66)  168.594 ms  179.948 ms  173.235 ms
12  b2-tavi1br2.tlv.att.net.il (192.116.177.229)  167.451 ms  149.785 ms
179.351 ms
13  * * *


--Ariel

--
Ariel Biener
e-mail: ariel@post.tau.ac.il
PGP(6.5.8) public key http://www.tau.ac.il/~ariel/pgp.html


=================================================================
To unsubscribe, send mail to linux-il-request@linux.org.il with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail linux-il-request@linux.org.il