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BGP loop or normal bahaviour?

Fabio Francisco
Beginner
Beginner

Hi,

running a traceroute a noticed this:

traceroute 10.191.21.1 source 10.191.11.1

Type escape sequence to abort.

Tracing the route to 10.191.21.1

  1 10.191.111.14 24 msec

    10.191.111.10 20 msec

    10.191.111.14 8 msec

  2 10.191.111.2 20 msec

    10.191.111.6 16 msec

    10.191.111.2 24 msec

  3 10.191.121.5 12 msec 16 msec 16 msec

  4 10.191.121.13 12 msec 24 msec *

is this nornal? I have attached a diagram for a better understanding of the route that the icmp packet goes from 10.191.11.1 to 10.191.21.1.

Thanks in advance.

Fabio

1 Accepted Solution

Accepted Solutions

Marwan ALshawi
Advisor
Advisor

it looks like you have equal cost multi pathing from 10.191.11.1 to 10.191.21.1 using both uplinks 10.191.111.14 and 10.191.111.10 not sure if you are using at that L3 switch to the routers HSRP,GLBP or routing

if its rouitng can you post the L3 siwtch of the rourse   show ip route 10.191.21.1

HTH

View solution in original post

2 Replies 2

Marwan ALshawi
Advisor
Advisor

it looks like you have equal cost multi pathing from 10.191.11.1 to 10.191.21.1 using both uplinks 10.191.111.14 and 10.191.111.10 not sure if you are using at that L3 switch to the routers HSRP,GLBP or routing

if its rouitng can you post the L3 siwtch of the rourse   show ip route 10.191.21.1

HTH

Hey mate thanks for your repply...

I'm not using HSRP neither GLBP...

I am running EIGRP on the L3 switches (stacked) and BGP on the routers. I am also redistributing EIGRP to each other BGP.

Ithink I have found my problem. When redistributing BGP into EIGRP I reckon I created the loop shown above.

Thank you very much for your repply though.

Cheers,

Fabio

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