NAME

V6LC_2_2_13_A - Router Advertisement Processing, Router Lifetime (Router Lifetime Updated with Same Lifetime)

TARGET

Host

TOPOLOGY

           TN2
            |
----+-------+--- LinkX
    |
   TR1     HUT
    |       |
----+-------+--- Link0
Link0 global 3ffe:501:ffff:100::/64

link-local fe80::/64

LinkX global 3ffe:501:ffff::/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

TN2 global 3ffe:501:ffff::<TnDef.Link0_addr>

link-local fe80::<TnDef.Link0_addr>

ether <TnDef.Link0_addr>

SETUP

This minimal setup procedure provides the NUT with a default router TR1, a global prefix, and ensures that the NUT can communicate with TR1.

   TR1     HUT
    |       |
    | -->   | RA
    |       |
    *       | Wait (MAX_RTR_SOLICITATION_DELAY + RetransTimer * DupAddrDetectTransmits)
    |       |
    | ----> | Echo Request
    |   <-- | NS
    | ----> | NA
    | <---- | Echo Reply
    |       |
    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    = 1800
            reachable time     = 600000
            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.  Wait (MAX_RTR_SOLICITATION_DELAY + RetransTimer * DupAddrDetectTransmits)

        Host constants:
            MAX_RTR_SOLICITATION_DELAY: 1 second

        Node constants:
            RETRANS_TIMER             : 1,000 milliseconds

        Host Variables:
            RetransTimer
                Default               : RETRANS_TIMER milliseconds

        Node Variables:
            DupAddrDetectTransmits
                Default               : 1

3. Send Echo Request

        IPv6 header
            source      = TR1 (link-local)
            destination = HUT (link-local)
        Echo Request

4. Observe NS

        IPv6 header
            hop limit   = 255
            source      = HUT (link-local)
            destination = TR1 (solicited-node multicast address)
        NS
            target      = TR1 (link-local)
        SLL option

5. Send NA

        IPv6 header
            hop limit   = 255
            source      = TR1 (link-local)
            destination = HUT (link-local)
        NA
            R           = 1
            S           = 1
            O           = 1
            target      = TR1 (link-local)
        TLL option

6. Observe Echo Reply

        IPv6 header
            source      = HUT (link-local)
            destination = TR1 (link-local)
        Echo Reply

TEST PROCEDURE

- Verify that a host properly processes a Router Advertisement and the Router Lifetime field within it.

TN2 TR1 HUT | | | | | --> | RA | | | | ------------> | Echo Request | <------------ | Echo Reply [Judgment #1] | | | | | --> | RA | | | | ------------> | Echo Request | <------------ | Echo Reply [Judgment #2] | | | /// /// /// Router Lifetime expires | | | | ------------> | Echo Request | | | | | * Observe Packets [Judgment #3] | | | 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 = 20 reachable time = 600000 retrans timer = 1000 Prefix Information option prefix length = 64 L = 1 A = 1 valid Lifetime = 100 preferred lifetime = 20 prefix = 3ffe:501:ffff:100::

2. Send Echo Request

IPv6 header source = TN2 (global) destination = HUT (global) Echo Request

3. Observe Echo Reply

IPv6 header hop limit = 64 source = HUT (global) destination = TN2 (global) Echo Reply

4. Repeat steps 2 through 3 for 19 seconds.

5. 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 = 20 reachable time = 600000 retrans timer = 1000 Prefix Information option prefix length = 64 L = 1 A = 1 valid Lifetime = 100 preferred lifetime = 20 prefix = 3ffe:501:ffff:100::

6. Send Echo Request

IPv6 header source = TN2 (global) destination = HUT (global) Echo Request

7. Observe Echo Reply

IPv6 header hop limit = 64 source = HUT (global) destination = TN2 (global) Echo Reply

8. Repeat steps 6 through 7 for 20 seconds.

9. Send Echo Request

IPv6 header source = TN2 (global) destination = HUT (global) Echo Request

10. Observe Packets

IPv6 header hop limit = 255 source = HUT (link-local) destination = TR1 (solicited-node multicast address) NS target = TR1 (link-local) SLL option

IPv6 header source = HUT (global) destination = TN1 (global) Echo Reply

JUDGEMENT

[Judgment #1] The HUT should respond to the Echo Requests from TN2 using TR1 as a first hop.
[Judgment #2] The HUT should update the Router Lifetime for TR1.
[Judgment #3] The HUT MUST not transmit an Echo Reply or transmit multicast NS's with a target address set to TR1's link-local address.

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 | | | --> | NA | | | ----> | Echo Request | <---- | Echo Reply | | * | Wait (DELAY_FIRST_PROBE_TIME) | | | <---- | NS | <---- | NS | <---- | NS | | 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::

2. Send NA w/ TLL (diff)

IPv6 header hop limit = 255 source = TR1 (link-local) destination = all-nodes multicast address NA R = 1 S = 0 O = 1 target = TR1 (link-local) TLL option address = TRX (ether)

3. Send Echo Request

IPv6 header source = TR1 (link-local) destination = HUT (link-local) Echo Request

4. Observe Echo Reply

IPv6 header source = HUT (link-local) destination = TR1 (link-local) Echo Reply

5. Wait (DELAY_FIRST_PROBE_TIME)

Node constants: DELAY_FIRST_PROBE_TIME: 5 seconds

6. Observe MAX_UNICAST_SOLICIT NSs

IPv6 header hop limit = 255 source = HUT (link-local) destination = TR1 (link-local) NS target = TR1 (link-local) SLL option

Node constants: MAX_UNICAST_SOLICIT: 3 transmissions

REFERENCE

RFC 2461 - Neighbor Discovery for IPv6

`Link0`	`global`	`3ffe:501:ffff:100::/64`
`Link0`	`link-local`	`fe80::/64`
`LinkX`	`global`	`3ffe:501:ffff::/64`
`LinkX`	`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`
`TN2`	`global`	`3ffe:501:ffff::<TnDef.Link0_addr>`
	`link-local`	`fe80::<TnDef.Link0_addr>`
	`ether`	`<TnDef.Link0_addr>`