[c-nsp] Preferring OSPF over BGP

sthaug at nethelp.no sthaug at nethelp.no
Sat Aug 14 06:46:30 EDT 2010


> > Well now. Cisco has for many years recommended having the *same*
> > administrative distance for iBGP and eBGP, as in
> >
> > distance bgp 200 200 200
> >
> > Wouldn't this accomplish what you need?
> 
> Steinar,
> 
> Could you point me to any link with such recommendations? And if they, 
> as you say, have recommended it for many years, why IOS XR still has the 
> same unchanged default values of administrative distance, while it has 
> many other IOS defaults updated?

See for instance

- PDF page 41 (slide 82) from Networkers 2001 session "Deploying BGP for
Enterprises and ISPs",

http://www.cisco.com/networkers/nw01/pres/pr/ps_presos/PS_545_TURNER_C2.pdf

- PDF page 27 and 28 (slide 54 and 55) from Networkers 2004 session
"Deployment and analysis of BGP",

http://www.cisco.com/networkers/nw04/presos/docs/RST-2303.pdf

I have no idea why they haven't changed the IOS XR defaults. I know all
*our* IOS XR speaking routers are using a distance of 200 for both
iBGP and eBGP, on Cisco's recommendations.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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