nanog mailing list archives
Re: Scalability issues in the Internet routing system
From: "Rubens Kuhl Jr." <rubensk () gmail com>
Date: Wed, 26 Oct 2005 12:10:39 -0200
likewise, "FIB table growth" isn't yet a problem either - generally that just means "put in more SRAM" or "put in more TCAM space".
IPv6 may change the equations around .. but we'll see ..
IPv6 will someday account for as many IPv4 networks as would exist then, and IPv6 prefixes are twice as large as IPv4 (64 bits prefix vs 32 bits prefix+address, remainder 64 bits addresses on IPv6 are strictly local), so despite a 3x cost increase (1 32 bit table for IPv4, 2 for IPv6) on memory structures and 2x increase on lookup engine(2 engines would be used for IPv6, one for IPv4), the same techonology that can run IPv4 can do IPv6 at the same speed. As this is not a usual demand today, even hardware routers limit the forwarding table to the sum of IPv4 and IPv6 prefixes, and forward IPv6 at half the rate of IPv4. Rubens
Current thread:
- Re: Scalability issues in the Internet routing system, (continued)
- Re: Scalability issues in the Internet routing system Tony Li (Oct 19)
- Re: Scalability issues in the Internet routing system Alexei Roudnev (Oct 23)
- Re: Scalability issues in the Internet routing system Tony Li (Oct 24)
- Re: Scalability issues in the Internet routing system Blaine Christian (Oct 24)
- Re: Scalability issues in the Internet routing system Christopher L. Morrow (Oct 25)
- Re: Scalability issues in the Internet routing system Valdis . Kletnieks (Oct 25)
- Re: Scalability issues in the Internet routing system Christopher L. Morrow (Oct 25)
- Re: Scalability issues in the Internet routing system Rubens Kuhl Jr. (Oct 25)
- Re: Scalability issues in the Internet routing system Alexei Roudnev (Oct 25)
- Re: Scalability issues in the Internet routing system Lincoln Dale (Oct 26)
- Re: Scalability issues in the Internet routing system Rubens Kuhl Jr. (Oct 26)
- Re: Scalability issues in the Internet routing system James (Oct 26)
- Re: Scalability issues in the Internet routing system Rubens Kuhl Jr. (Oct 26)
- Re: Scalability issues in the Internet routing system sthaug (Oct 26)
- Re: Scalability issues in the Internet routing system Elmar K. Bins (Oct 27)
- Re: Scalability issues in the Internet routing system sthaug (Oct 27)
- Re: Scalability issues in the Internet routing system JORDI PALET MARTINEZ (Oct 26)
- Re: Scalability issues in the Internet routing system Alexei Roudnev (Oct 26)
- Re: Scalability issues in the Internet routing system Valdis . Kletnieks (Oct 26)
- Re: Scalability issues in the Internet routing system Blaine Christian (Oct 26)
- Re: Scalability issues in the Internet routing system Andre Oppermann (Oct 26)