All of them are wrong there is a 3 bit prefix, followed by a 61 bit field that is considered continuous and last is a 64 bit field that can be used for the interface id or other host identifier. TLA/NLA/SLA terminology is deprecated. Use CIDR prefix notation, a /32, a /48 ,etc Joao At 12:44 +0200 9/4/03, Jeroen Valcke wrote:

Hello,

I'm in the process of reviving ipv6 on our network. I'm new to IPv6 so this questions is perhaps obvious.

I found an old company document which lists the following format for an IPv6 address.

| 16 | 19 | 13 | 16 | 64 bits | +-+---------+------+-----------+--------+-----------------+ | 0x2001 | sTLA | NLA | SLA ID | Interface ID | +-+---------+------+-----------+--------+-----------------+

I'm confused here, reading RFC2373 I found the folowing format

|3| 13 | 8 | 24 | 16 | 64 bits | +-+---------+-----+------------+--------+-----------------+ | | TLA ID | RES | NLA ID | SLA ID | Interface ID | +-+---------+-----+------------+--------+-----------------+

Hmmm, what's wrong.

-Jeroen-

-- Jeroen Valcke sst@belnet.be jeroen.valcke@belnet.be