From: Valdis.Kletnieks@vt.edu Date: Wed, 07 Apr 2010 12:28:39 -0400
On Wed, 07 Apr 2010 16:09:25 +0200, Eliot Lear said:
them). If v6 is even close to ready, wouldn't it be sad that this sort of testing isn't done at interop?
Interop long ago ceased being a interop shootout and became a 8x11 color glossy trade show. I think the last time any actual *testing* happened at Interop, the guys hooking up the network drops were wearing t-shirts that said "Yes, the subnet mask really *is* 255.255.252.0", and anybody who whined that their gear only supported octet-boundary subnets was told "And next year, it will be 255.255.250.0".
:)
Anybody got production gear that *still* doesn't do non-octet-boundary subnets?
Sort of. We discovered that Infinera DWDM gear's boot ROM OS is entirely classful. Not only most the subnet mask be on octet boundaries, but the boundary must match the address space used. (Well, you really can't specify a subnet mask. It just sets it based on the address.) That said, this is only the boot ROM system. Once you figure out how to make that work in your configuration, you load the real, running software which does CIDR and any subnet mask. So the impact is minimal, but it did shock me when I ran into it. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751