RE: Is the question correct ? (Core Workbook - lab4 - task5.2)

From: Michael Stout (michaelgstout@hotmail.com)
Date: Thu Nov 09 2006 - 03:20:43 ART


i worked this problem and i encountered problems too.
The debug message is saying you have a backup interface.

I wish i could rememeber the problem, but I think i was doing my
troubleshooting on the other side of the networ, on R3, 1 and 2.

I think I was getting asymetric traffic for egress and ingress flows, but
again, it was a long time ago.

  --------------------------------------------------------------------

  From: "Danilo Rodrigues" <dani.rodrigues@gmail.com>
  Reply-To: "Danilo Rodrigues" <dani.rodrigues@gmail.com>
  To: "Cisco certification" <ccielab@groupstudy.com>
  Subject: Is the question correct ? (Core Workbook - lab4 - task5.2)
  Date: Wed, 8 Nov 2006 14:30:13 -0200
  Hi all,

  It is about the task 5.2

  --------R1-------
              | | |
              | | |
              | | |
    R5 ---| | R3
              | | |
              | | |
              | | |
            --------R2-------

  R1 - R2 - R3 - running OSPF

  R1 - R2 - R3 - running EIGRP

  R1 - R2 - mutual redistribution (same metric in both routers)

  Loopback's from R1 and R2 in OSPF

  Then, R5 has two EIGRP entries for 150.1.1.1

  Rack1R5#sh ip route 150.1.1.1
  Routing entry for 150.1.1.0/24
  Known via "eigrp 10", distance 170, metric 281856, type external
  Redistributing via eigrp 10, rip
  Advertised by rip metric 5
  Last update from 152.1.125.2 on Ethernet0/0, 00:13:50 ago
  Routing Descriptor Blocks:
  * 152.1.125.2, from 152.1.125.2, 00:13:50 ago, via Ethernet0/0
  Route metric is 281856, traffic share count is 1
  Total delay is 1010 microseconds, minimum bandwidth is 10000 Kbit
  Reliability 255/255, minimum MTU 1500 bytes
  Loading 1/255, Hops 1
  152.1.125.1, from 152.1.125.1, 00:13:50 ago, via Ethernet0/0
  Route metric is 281856, traffic share count is 1
  Total delay is 1010 microseconds, minimum bandwidth is 10000 Kbit
  Reliability 255/255, minimum MTU 1500 bytes
  Loading 1/255, Hops 1

  R5 is in BGP 100

  R1 and R2 in BGP 200

  The question ask to R5 routes through R1 using MED.

  So, BGP table in R5 shows:

  *> 222.22.2.0 150.1.1.1 200 0 200 254
  ?
  * 150.1.2.2 250 0
  200 254
  ?

  That is correct and I could stop here.

  But R5 know 150.1.1.1 via R1 and R2 !!!!

  So, when trace from R4 (inside AS100) sometimes this:

  Rack1R4#traceroute 222.22.2.0

  Type escape sequence to abort.
  Tracing the route to 222.22.2.0

  1 152.1.45.5 44 msec 40 msec 40 msec
  2 152.1.125.1 40 msec 40 msec 32 msec <<<<<
  3 152.1.123.3 72 msec 80 msec 80 msec
  4 152.1.37.7 80 msec 80 msec 80 msec
  5 *

  and this:

  Rack1R4#traceroute 222.22.2.0

  Type escape sequence to abort.
  Tracing the route to 222.22.2.0

  1 152.1.45.5 44 msec 40 msec 40 msec
  2 152.1.125.2 40 msec 40 msec 40 msec <<<<<<
  3 152.1.123.3 80 msec 80 msec 92 msec
  4 152.1.37.7 68 msec 80 msec 80 msec
  5 *

  So, my question is: Will I receive these points ? Is there any
  problem with
  the IGP configuration ?

  In R5 I have the following message on "debug ip routing":
  *Nov 6 22:42:24.699: is_up: 0 state: 4 sub state: 1 line: 0
  has_route:
  False
  What it means ?

  Thanks for any help.

  Regards,

  Danilo

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