Hi Friend,
Motive: To generate looping scenario in bgp, for implementing soo community.
I am trying to create loop under bgp ,CE1 & CE2 running under AS 100 , PE1/PE2 running on AS200.
Topology
CE1----PE1----PE2---CE2
| |
| |
|_ _192.168.1.0/30-- |
CE1: Lo1 100.100.100.100
Scenario 1:
CE1 and CE2 running ospf , AS override has been implemented towards CE1/CE2.Loopbacklo1 has been included under ospf process.
bgp backdoor command ran on CE2 for 192.168.1.0 Now CE2 learning 192186.11.0 prefix from ospf , PE2 learning via PE1
I shut lo1 on CE1, as soon as i am shutting the link , routing for this prefix is removed from all node.
I unshut the link and removed ip address from lo1 , after 3-5 sec routes has been pulled out from routing table on all node.
From internet source:
SoO is useful to prevent routing loops and sub-optimal routing, especially used to prevent routing loops on dual homed sites.
In have not used Soo , I need to know how loop is created here in dual homed sites, My observation says loop not created it is unreachibility of prefixes for some fixed time without SOO.
How I can create loop to test all these scenario under bgp.
