NAME

V6LC_2_2_9_B - Processing Router Solicitations (MIN_DELAY_BETWEEN_RAS)

TARGET

Router

TOPOLOGY

            |
   TN1     RUT
    |       |
----+-------+--- Link0

Link0	global	3ffe:501:ffff:100::/64
	link-local	fe80::/64
RUT	global	3ffe:501:ffff:100::<NutDef.Link0_addr>
	link-local	fe80::<NutDef.Link0_addr>
	ether	<NutDef.Link0_addr>
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 router correctly processes Router Solicitations and transmits Router Advertisements.

   TN1     RUT
    |       |
    |       * Configure the RUT with a MinRtrAdvInterval of 30 seconds and a MaxRtrAdvInterval of 40 seconds.
    |       |
    |   <-- | RA (multicast)
    |   <-- | RA (multicast)
    |   <-- | RA (multicast)
    |       |
    | -->   | RS (multicast)
    |   <-- | RA (multicast) [Judgment #1]
    |       |
    | -->   | RS (multicast)
    |   X-- | doesn't send RA within MIN_DELAY_BETWEEN_RAS
    |       |
    V       V

1. Configure the RUT with a MinRtrAdvInterval of 30 seconds and a MaxRtrAdvInterval of 40 seconds.

2. Observe RA

        RA message format #1
            IPv6 header
                hop limit          = 255
                source             = RUT (link-local)
                destination        = all-nodes multicast address
            RA
                cur hop limit      = 64
                M                  = 0
                O                  = 0
                router lifetime    = 120
                reachable time     = 0
                retrans timer      = 0
            SLL option
            Prefix Information option
                prefix length      = 64
                L                  = 1
                A                  = 1
                valid Lifetime     = 2592000
                preferred lifetime = 604800
                prefix             = 3ffe:501:ffff:100::

        RA message format #2
            IPv6 header
                hop limit          = 255
                source             = RUT (link-local)
                destination        = all-nodes multicast address
            RA
                cur hop limit      = 64
                M                  = 0
                O                  = 0
                router lifetime    = 120
                reachable time     = 0
                retrans timer      = 0
            Prefix Information option
                prefix length      = 64
                L                  = 1
                A                  = 1
                valid Lifetime     = 2592000
                preferred lifetime = 604800
                prefix             = 3ffe:501:ffff:100::

3. Send RS

        IPv6 header
            hop limit   = 255
            source      = unspecified address
            destination = all-routers multicast address
        RS

4. Observe RA

        RA message format #1
            IPv6 header
                hop limit          = 255
                source             = RUT (link-local)
                destination        = all-nodes multicast address
            RA
                cur hop limit      = 64
                M                  = 0
                O                  = 0
                router lifetime    = 120
                reachable time     = 0
                retrans timer      = 0
            SLL option
            Prefix Information option
                prefix length      = 64
                L                  = 1
                A                  = 1
                valid Lifetime     = 2592000
                preferred lifetime = 604800
                prefix             = 3ffe:501:ffff:100::

        RA message format #2
            IPv6 header
                hop limit          = 255
                source             = RUT (link-local)
                destination        = all-nodes multicast address
            RA
                cur hop limit      = 64
                M                  = 0
                O                  = 0
                router lifetime    = 120
                reachable time     = 0
                retrans timer      = 0
            Prefix Information option
                prefix length      = 64
                L                  = 1
                A                  = 1
                valid Lifetime     = 2592000
                preferred lifetime = 604800
                prefix             = 3ffe:501:ffff:100::

5. Send RS

        IPv6 header
            hop limit   = 255
            source      = unspecified address
            destination = all-routers multicast address
        RS

6. not receive RA within MIN_DELAY_BETWEEN_RAS

        Router constants:
            MIN_DELAY_BETWEEN_RAS: 3 seconds

JUDGEMENT

[Judgment #1] The RUT MUST NOT transmit more than one advertisement every MIN_DELAY_BETWEEN_RAS (3) 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.

   TN1     RUT
    |       |
    |       * Ceasing to be an advertising interface
    |       |
    |   <-- | RA (multicast)
    |   <-- | RA (multicast)
    |   <-- | RA (multicast)
    |       |
    V       V

1. Ceasing to be an advertising interface

2. Observe RA

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

        RA message format #2
            IPv6 header
                hop limit          = 255
                source             = RUT (link-local)
                destination        = all-nodes multicast address
            RA
                cur hop limit      = 64
                M                  = 0
                O                  = 0
                router lifetime    = 0
                reachable time     = 0
                retrans timer      = 0
            Prefix Information option
                prefix length      = 64
                L                  = 1
                A                  = 1
                valid Lifetime     = 2592000
                preferred lifetime = 604800
                prefix             = 3ffe:501:ffff:100::

REFERENCE

RFC 2461 - Neighbor Discovery for IPv6