Re: [sidr] WGLC: draft-ietf-sidr-bgpsec-reqs

[Danny McPherson <[e-mail]>]

On Nov 8, 2011, at 7:59 AM, Sriram, Kotikalapudi wrote:
> According to 
> http://bgpupdates.potaroo.net/instability/bgpupd.html 


Sriram, 
To quote from the page you reference:

"The data has been gathered using a single eBGP peering with AS 131072."

We've got over 450 peers with multiple interconnects in 70+ locations, with 
many prefixes asserting reachability from multiple eBGP paths, and *millions* 
of eBGP-learned paths on many routers today -- and we're not even an ISP.

Unless I'm missing something, I think this has some material impact on your 
numbers...

-danny

> the current global BGP system produces
> Average Prefixes per BGP Update: 	2.24
> Average BGP Update Messages per second: 	1.13 	
> Average Prefix Updates per second: 	2.53
> From this we can compute:
> Average Prefix Updates per day = 	218696
> 
> Now if we consider a BGPSEC island of 100,000 participating prefixes
> (multiple ISPs form a BGPSEC island and there is BGPSEC between
> them and also in each ISP's entire customer cone):
> With 24 hour beaconing interval, we would have:
> Prefix Updates per Day = 100,000 (seen at each BGPSEC router)
> BGPSEC Update Size = 420B (for ECDSA-256)
> Average Bandwidth Required = 3.89 kbps (averaged over a day) 
> 
> Does this answer what you were asking for?
> 
> Sriram 
> 
> 
> 
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