Hello,
if you want to use conditional advertising, you could do the following:
Add a tag to the default route pointing to your primary ISP:
ip route 0.0.0.0 0.0.0.0 yy.yyy.yyy.17 tag 10
Add the following to your route map:
route-map localonly permit 10
match tag 10
set weight 200
This way you default route pointing to SP1 would always have a higher wight and therefor be preferred.
The same could be achieved by spwcifying the weight in your neighbor statement:
neighbor yy.yyy.yyy.17 weight 200
Or you could use local preference:
neighbor yy.yyy.yyy.17 local-preference 200
HTH,
GP
