Saturday, October 27, 2018

BGP site of origin - seems unnecessary

Here's the topology:

https://www.cisco.com/c/dam/en/us/td/i/200001-300000/230001-240000/230001-231000/230446.ps/_jcr_content/renditions/230446.jpg

Can someone show me a topology where this is actually required? Everything I look at seems like it's just not necessary, even when using AS-OVERRIDE because eventually the loop is prevented. I can see it being helpful in a case where EIGRP is the backdoor link routing protocol but then the SOO needs to be maintained. If you configure an SOO with the same ID at both sites you end up losing redundancy. Configuring a different one works but loop prevention should kick in too.



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