nanog mailing list archives
Re: Failover how much complexity will it add?
From: Joel Jaeggli <joelja () bogus com>
Date: Fri, 13 Nov 2009 10:40:51 +0900
Randy Bush wrote:
It has been routinely observed in nanog presentations that settlement free providers by their nature miss a few prefixes that well connected transit purchasing ISPs carry.just trying to understand what you mean, o no transit-free provider actually has all (covering) prefixes needed to cover the active space, but o one or more reasonably small subsets of the set of transit-free providers do cover the whole active space.
If your goal is near-complete coverage, under normal circumstances you need more than one (your subset). Settlement-free provider peering spats are a degenerate condition of the normal state of affairs. The non-settlement-free provider has some subset already. Pointing default into a settlement-free provider, that is deliberately not speaking to another is obviously a recipe to lose data, which speaks to the question of whether one should as for a full table from settlement free upstreams. My somewhat obtuse point was that this isn't some wild west frontier justice sort of affair, but rather, the normal state of affairs.
randy
Current thread:
- Re: Failover how much complexity will it add?, (continued)
- Re: Failover how much complexity will it add? Joe Greco (Nov 09)
- Re: Failover how much complexity will it add? adel (Nov 09)
- Re: Failover how much complexity will it add? adel (Nov 09)
- Re: Failover how much complexity will it add? adel (Nov 09)
- Re: Failover how much complexity will it add? Joe Greco (Nov 09)
- Re: Failover how much complexity will it add? adel (Nov 09)
- Re: Failover how much complexity will it add? Seth Mattinen (Nov 09)
- Re: Failover how much complexity will it add? Stef Walter (Nov 10)
- Re: Failover how much complexity will it add? Joel Jaeggli (Nov 10)
- Re: Failover how much complexity will it add? Randy Bush (Nov 10)
- Re: Failover how much complexity will it add? Joel Jaeggli (Nov 12)
- RE: Failover how much complexity will it add? Holmes,David A (Nov 09)
- Re: Failover how much complexity will it add? Joe Greco (Nov 09)
- Re: Failover how much complexity will it add? Brad Fleming (Nov 10)