NAME

V6LC_2_1_14 -Neighbor Solicitation Processing Anycast

TARGET

Router

TOPOLOGY

            |
    TN     NUT
    |       |
----+-------+--- Link0

Link0	global	3ffe:501:ffff:100::/64
	link-local	fe80::/64
TN	global	3ffe:501:ffff:100::<TnDef.Link0_addr>
	link-local	fe80::<TnDef.Link0_addr>
	ether	<TnDef.Link0_addr>
NUT (Link0)	global	3ffe:501:ffff:100::<NutDef.Link0_addr>	unicast
		3ffe:501:ffff:100::	anycast
	link-local	fe80::<NutDef.Link0_addr>
	ether	<NutDef.Link0_addr>

SETUP

none

INITIALIZATION

none

TEST PROCEDURE

- Verify that NA sent in response to a NS is delayed by a random time between 0 and MAX_ANYCAST_DELAY_TIME seconds.

    TN     NUT
    |       |
    | -->   | NS (multicast)
    | <---- | NA [Judgment #1]
    |       |
    V       V

    State: NONE (TN) (link-local)

1. Send NS

        IPv6 header
            hop limit   = 255
            source      = TN (global)
            destination = Subnet-Router anycast address (solicited-node multicast address)
        NS
            target      = Subnet-Router anycast address
        SLL option

    State: STALE (TN) (link-local)

2. Observe NA between 0 and MAX_ANYCAST_DELAY_TIME seconds after the receipt of NS [Judgment #1]

        IPv6 header
            hop limit   = 255
            source      = NUT (global)
            destination = TN  (global)
        NA
            R           = 1
            S           = 1
            O           = 0
            target      = Subnet-Router anycast address
        TLL option

        Node constants:
            MAX_ANYCAST_DELAY_TIME: 1 seconds

    State: DELAY (TN) (link-local)

JUDGEMENT

[Judgment #1] NUT must transmit NA to TN between 0 and MAX_ANYCAST_DELAY_TIME seconds after the receipt of NS

CLEANUP

none

REFERENCE

RFC 2461 - Neighbor Discovery for IPv6