NAME

V6LC_2_2_14_A - Router Advertisement Processing, Reachable Time (BaseReachableTime Set to 10 sec.)

TARGET

Host

TOPOLOGY

    |
   TR1     TN1     HUT
    |       |       |
----+-------+-------+--- Link0

Link0	global	3ffe:501:ffff:100::/64
	link-local	fe80::/64
HUT	global	3ffe:501:ffff:100::<NutDef.Link0_addr>
	link-local	fe80::<NutDef.Link0_addr>
	ether	<NutDef.Link0_addr>
TR1	global	3ffe:501:ffff:100:200:ff:fe00:a0a0
	link-local	fe80::200:ff:fe00:a0a0
	ether	00:00:00:00:a0:a0
TN1	global	3ffe:501:ffff:100::<TnDef.Link0_addr>
	link-local	fe80::<TnDef.Link0_addr>
	ether	<TnDef.Link0_addr>

SETUP

none

TEST PROCEDURE

- Verify that a host updates its BaseReachableTime variable and re-computes its ReachableTime variable upon receipt of a Router Advertisement with a specified Reachable Time.

   TR1     TN1     HUT
    |       |       |
    | -->   |       |  RA
    |       |       |
    |       | ----> |  Echo Request
    |       |   <-- |  NS (multicast) [Judgment #1]
    |       | ----> |  NA
    |       | <---- |  Echo Reply     [Judgment #1]
    |       |       |
   ///     ///     /// ReachableTime expires
    |       |       |
    | ------------> |  Echo Request
    | <------------ |  Echo Reply
    |       |       |
    |       |       * Wait (DELAY_FIRST_PROBE_TIME)
    |       |       |
    |       | <---- |  NS             [Judgment #2]
    |       | <---- |  NS
    |       | <---- |  NS
    |       |       |
    V       V       V

1. Send RA

        IPv6 header
            hop limit          = 255
            source             = TR1 (link-local)
            destination        = all-nodes multicast address
        RA
            cur hop limit      = 0
            M                  = 0
            O                  = 0
            router lifetime    = 0
            reachable time     = 10000
            retrans timer      = 0
        Prefix Information option
            prefix length      = 64
            L                  = 1
            A                  = 1
            valid Lifetime     = 2592000
            preferred lifetime = 604800
            prefix             = 3ffe:501:ffff:100::

2. Send Echo Request

        IPv6 header
            source      = TN1 (link-local)
            destination = HUT (link-local)
        Echo Request

3. Observe NS

        IPv6 header
            hop limit   = 255
            source      = HUT (link-local)
            destination = TN1 (solicited-node multicast address)
        NS
            target      = TN1 (link-local)
        SLL option

4. Send NA

        IPv6 header
            hop limit   = 255
            source      = TN1 (link-local)
            destination = HUT (link-local)
        NA
            R           = 0
            S           = 1
            O           = 1
            target      = TN1 (link-local)
        TLL option

5. Observe Echo Reply

        IPv6 header
            hop limit   = 64
            source      = HUT (link-local)
            destination = TN1 (link-local)
        Echo Reply

6. Repeat steps 2 through 5 for 40 seconds.

7. Send Echo Request

        IPv6 header
            source      = TN1 (link-local)
            destination = HUT (link-local)
        Echo Request

8. Observe Echo Reply

        IPv6 header
            source      = HUT (link-local)
            destination = TN1 (link-local)
        Echo Reply

9. Wait (DELAY_FIRST_PROBE_TIME)

        Node constants:
            DELAY_FIRST_PROBE_TIME: 5 seconds

10. Observe MAX_UNICAST_SOLICIT NSs

        IPv6 header
            hop limit   = 255
            source      = HUT (link-local)
            destination = TN1 (link-local)
        NS
            target      = TN1 (link-local)
        SLL option

        Node constants:
            MAX_UNICAST_SOLICIT: 3 transmissions

---

JUDGEMENT

[Judgment #1] The HUT should solicit for TN1's link-local address and transmit an Echo Reply.
[Judgment #2] The HUT should transmit a Neighbor Solicitation with a Target Address of TN1's link-local address at an interval between 5 and 15 seconds.

---

CLEANUP

The Cleanup procedure should cause the NUT to transition Neighbor Cache entries created in this test to state INCOMPLETE and remove any entries from its Default Router and Prefix Lists.

   TR1     HUT
    |       |
    | -->   | RA
    |       |
    V       V

1. Send RA

        IPv6 header
            hop limit          = 255
            source             = TR1 (link-local)
            destination        = all-nodes multicast address
        RA
            cur hop limit      = 64
            M                  = 0
            O                  = 0
            router lifetime    = 0
            reachable time     = 30000
            retrans timer      = 1000
        Prefix Information option
            prefix length      = 64
            L                  = 1
            A                  = 1
            valid Lifetime     = 0
            preferred lifetime = 0
            prefix             = 3ffe:501:ffff:100::

---

REFERENCE

RFC 2461 - Neighbor Discovery for IPv6