nanog mailing list archives
RE: Strange public traceroutes return private RFC1918 addresses
From: Joel Jaeggli <joelja () darkwing uoregon edu>
Date: Tue, 3 Feb 2004 06:39:33 -0800 (PST)
On Tue, 3 Feb 2004, Terry Baranski wrote:
A more important question is what will happen as we move out of the 1500 byte Ethernet world into the jumbo gigE world. It's only a matter of time before end users will be running gigE networks and want to use jumbo MTUs on their Internet links.The performance gain achieved by using jumbo frames outside of very specific LAN scenarios is highly questionable, and they're still not standardized. Are "jumbo" Internet MTUs seen as a pressing issue by ISPs and vendors these days?
Being a position to use a default mtu larger that 1500 would be nice given the number of tunnels of varying varieties that have to fragment because the packets going into them are themselves 1500 bytes... 4352 and 4470 are fairly common in the internet today... edge networks that are currently jumbo enabled for the most part do just fine when talking to the rest of the internet since they can do path mtu discovery... non-jumbo enabled devices on the same subnet with jumbo devices become a big problem since they end up black-holed from the hosts. adoption in the core of networks is likely easier than at the end-user edges...
-Terry
-- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja () darkwing uoregon edu GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
Current thread:
- Re: Strange public traceroutes return private RFC1918 addresses, (continued)
- Re: Strange public traceroutes return private RFC1918 addresses bill (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Niels Bakker (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Leo Bicknell (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Stephen J. Wilcox (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Leo Bicknell (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Stephen J. Wilcox (Feb 03)
- RE: Strange public traceroutes return private RFC1918 addresses Joel Jaeggli (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Valdis . Kletnieks (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Leo Bicknell (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Niels Bakker (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Petri Helenius (Feb 03)
- RE: Strange public traceroutes return private RFC1918 addresses Terry Baranski (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Kevin Oberman (Feb 03)
- Re: Strange public traceroutes return private RFC1918 addresses Richard A Steenbergen (Feb 03)