a load balance problem

[rickymao16]

The * probably means that it is the best route. But the traffic monitor shows that it uses both of the routes. If that is possible? If so, what is the root reason or whether there is a command that leads to the result? I am thinking this is related to CEF.

Below is the show result

R-12406-2#sh ip rou 61.152.126.208

Routing entry for 61.152.126.208/28

  Known via "ospf 10", distance 110, metric 24, type extern 1

  Last update from 211.144.208.62 on GigabitEthernet2/1, 00:48:44 ago

  Routing Descriptor Blocks:

  * 211.144.208.26, from 211.144.208.18, 00:48:44 ago, via GigabitEthernet4/1

      Route metric is 24, traffic share count is 1

    211.144.208.62, from 211.144.208.18, 00:48:44 ago, via GigabitEthernet2/1

      Route metric is 24, traffic share count is 1

[Karsten Iwen]

As both links have the same metric CEF will do ECLB (eaqual cost load balancing). Here is a starting point for reading:

http://www.cisco.com/en/US/products/hw/modules/ps2033/prod_technical_reference09186a00800afeb7.html

http://www.cisco.com/en/US/tech/tk827/tk831/technologies_tech_note09186a0080094806.shtml

-- 
Don't stop after you've improved your network! Improve the world by lending money to the working poor:
http://www.kiva.org/invitedby/karsteni