HP 6120XG HP ProCurve Series 6120 Blade Switches IPv6 Configuration Guide - Page 63
Solicited-Node Multicast Address Format, group identifier
View all HP 6120XG manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 63 highlights
IPv6 Addressing Multicast Application to IPv6 Addressing Bit Use 0 reserved 1 interface-local (loopback) 2 link-local (same topology as the corresponding link-local unicast scope) 3 reserved 4 admin-local (smallest administratively configured scope) 5 site-local (single site) 6 unassigned 7 unassigned 8 organization-local (multiple sites within the same organization) 9 unassigned A unassigned B unassigned C unassigned D unassigned E global F reserved For example, the following prefix indicates multicast traffic with a tempo rary multicast address and a link-local scope: ff12 or (binary) 1111 1111 0001 0010 ■ group identifier: This field includes the last 112 bits of the multicast address and contains the actual multicast group identity. (Refer to RFCs 3306, 4291, and 2375.) Solicited-Node Multicast Address Format The solicited-node multicast address the switch generates for a configured unicast or anycast address is composed of a unique, 104-bit multicast prefix (ff02:0:0:0:0:1:ff) and the last 24 bits of the subject address. For example, if a VLAN interface is configured with a link-local address of fe90::215:60ff:fe7a:adc0 then the corresponding solicited-node multicast address is ff02:0:0:0:0:1:ff7a:adc0 For related information, refer to: ■ RFC 2375: IPv6 Multicast Address Assignments 3-23