There are a number of RFCs with specific values. You might look at RFC
2473 (64), RFC 3122 (255), and RFC 3315 (32). Neighbor Discovery wants
a hop limit of one. each of those specifies a specific case in which
the value applies.
For IPv6 unicast traffic, I think it's fair to say "wider than the
network diameter". IPv4 seems to be using 64 pretty consistently for
that these days. I remember when the magic number was 16 and when it
was 32.
On Aug 18, 2009, at 11:26 PM, Fernando Gont wrote:
Hello, folks,
Is there a recommended value for the Hop Limit of IPv6 packets?
The IANA ipv6-parameters file states that the Hop Limit is not a
parameter (?).
FWIW, the recommended value for the IPv4 TTL is 64, and it seems that
some v6 implementations follow the same advice for the IPv6 Hop Limit.
e.g., at least in some Junipers it defaults to 64.
(http://www.juniper.net/techpubs/software/erx/junose700/swcmdref-a-m/html/i-commands285.html
)
Thanks!
Kind regards,
--
Fernando Gont
e-mail: [email protected] || [email protected]
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
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