nanog mailing list archives
Re: Implementations/suggestions for Multihoming IPv6 for DSL sites
From: Lukasz Bromirski <lukasz () bromirski net>
Date: Mon, 18 Apr 2011 21:27:59 +0200
On 2011-04-18 21:18, Jeff Wheeler wrote:
I strongly disagree with the assumption that the number of locations/sites would remain static.
It would grow, nobody said it would remain static. But still - it will grow slower than the number of new "full" allocations - covering both location *and* id.
LISP "solves" this problem by using the router's FIB as a macro-flow-cache. That's good except that a site with a large number of outgoing macro-flows (either because it's a busy site, responding to an external DoS attack, or actually originating a DoS attack from a compromised host) will cripple that site's ITR.
Scalability is one of the points traditionally left for the end, but that's hardly different from any protocol that was designed and then put into mainstream use. Second - you actually don't know that for sure - the mix of "from LISP" and "from normal IP" traffic would change in time, and the natural grow of the capabilities with the higher adoption would propably also affect ITR/ETR scalability numbers.
In addition, the current negative mapping cache scheme is far from ideal. I've written a couple of folks with a provably superior scheme (compared to existing work), and have received zero feedback. This is not good.
You mean LISP authors? -- "There's no sense in being precise when | Ćukasz Bromirski you don't know what you're talking | jid:lbromirski () jabber org about." John von Neumann | http://lukasz.bromirski.net
Current thread:
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites, (continued)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Owen DeLong (Apr 11)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Jeff Wheeler (Apr 11)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Cameron Byrne (Apr 11)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Owen DeLong (Apr 11)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Jeff Wheeler (Apr 11)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Luigi Iannone (Apr 12)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Jeff Wheeler (Apr 13)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Joel Jaeggli (Apr 17)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Lukasz Bromirski (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Jeff Wheeler (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Lukasz Bromirski (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Owen DeLong (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Luigi Iannone (Apr 19)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Leo Bicknell (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Lukasz Bromirski (Apr 18)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Luigi Iannone (Apr 19)
- Re: Implementations/suggestions for Multihoming IPv6 for DSL sites Luigi Iannone (Apr 12)