----- Original Message -----
Sent: Thursday, May 20, 2004 10:11
PM
Subject: Intra-Area-Prefix LSA's on P2P
interface
Hello,
In RFC 2740 Page 33, Paragraph
3
"Router RTX
examines its list of interfaces to the area. If the interface is in state
Down, its prefixes are not included. If the
interface has been reported in
RTX?s router-LSA as a Type 2 link description (link to transit network), its
prefixes are not included (they will be included in the intra-area-prefix-LSA
for the link instead). If the interface type is
Point-to-MultiPoint,or the interface is in state Loopback, or the interface
connects to a point-to-point link which has not been assigned a prefix,then
the site-local and global scope IPv6 addresses associated with the interface
(if any) are copied into the intra-area-prefix-LSA, setting the LA-bit in the
PrefixOptions field, and setting the PrefixLength to 128 and the Metric to
0. Otherwise,the list of site-local and global prefixes
configured in RTX for the link are copied into the intra-area-prefix-LSA by
specifying the PrefixLength, PrefixOptions, and Address Prefix fields. The
Metric field for each of these prefixes is set to the interface?s
output
cost".
In the above paragraph please refer to the lines
in bold, they seem to indicate that, if a
P2P interface is NOT assigned a global ipv6 address then its
corresponding inter-area-prefix LSA should send the site local
address for that interface.
My questions are
1) Where & how to use this site
local address ?
2) Is this condition for IPV6
unnumbered interfaces ?
Regards
Nitin