Re: 4 Byte AS tested

At 04:59 AM 12/01/2007, Todd Underwood wrote:

all,

we (renesys) saw as23456 adjacent to both 1221 (expected) and 65001 (not), originating two prefixes:

203.10.62.0/24 and 203.10.63.0/24

paths looked like:

<peer> 7474 1221 65001 23456 23456 23456 and many similar

This particular path illustrates the point - in actual fact the trailing 3 entries were NOT instances of AS path prepending, but were in fact 2 byte AS translations of AS 1.101, AS1.102 and AS 1.103. Geoff