NAME

  Test v6LC.2.2.16 - Router Advertisement Processing, Neighbor Cache (Hosts Only)
  Part E: RA without SLLA, NCE REACHABLE

Purpose

  Verify that a host properly updates its Neighbor Cache upon receipt of a Router
  Advertisement.

References

  * [ND]  Sections 6.3.4 and 7.3.3

Resource Requirements

  * Packet generator
  * Monitor to capture packets

Test Setup

  No Common Test Setup is performed. Wait at least 3 seconds
  (MAX_MULTICAST_SOLICIT * RETRANS_TIMER) after any previous cleanup to make sure all
  previous NCE's are in state No NCE. The Common Test Cleanup procedure is performed after each
  part.

Router Solicitation A
IPv6 Header
Next Header: 58
Source Address: TR1's Link-local Address

Router Advertisement
Router Lifetime: 0 seconds
Reachable Time: 10 seconds
Retransmit Interval: 1 second
Source Link-layer Option

Echo Request B
IPv6 Header
Next Header: 58
Source Address: TR1's link-local Address
Destination Address: HUT's link-local Address

ICMPv6 Echo Request

Neighbor Advertisement C
IPv6 Header
Next Header: 58
Source Address: TR1's Link-local Address
Destination Address: HUT's Link-local Address

Neighbor Advertisement
Router flag: 1
Solicited flag: 1
Override flag: 1
Target Address: TR1's Link-local Address

Router Solicitation A
IPv6 Header Next Header: 58 Source Address: TR1's Link-local Address
Router Advertisement Router Lifetime: 0 seconds Reachable Time: 10 seconds Retransmit Interval: 1 second Source Link-layer Option

Echo Request B
IPv6 Header Next Header: 58 Source Address: TR1's link-local Address Destination Address: HUT's link-local Address
ICMPv6 Echo Request

Neighbor Advertisement C
IPv6 Header Next Header: 58 Source Address: TR1's Link-local Address Destination Address: HUT's Link-local Address
Neighbor Advertisement Router flag: 1 Solicited flag: 1 Override flag: 1 Target Address: TR1's Link-local Address

Procedure

  Part E: RA without SLLA, NCE REACHABLE
   17. Repeat Steps 8 through 14, transmitting Router Advertisement A in Step 12 without a Source
       Link-layer Address.
   18. Check the NCE of TR1 on the HUT and observe the packets transmitted by the HUT.

Observable Results

  Part E
   Step 9:
   The HUT should create a Neighbor Cache Entry for TR1 and set the state of the
   Entry to INCOMPLETE. The HUT should send a multicast Neighbor Solicitation to TR1.

   Step 11:
   The HUT should update the state of TR1's NCE to REACHABLE and record
   TR1's Link-layer Address. Because the HUT is in state REACHABLE, after receiving the
   earlier Echo Request from TR1, the HUT should send an Echo Reply using the received
   Link-Layer Address. After DELAY_FIRST_PROBE_TIME, the HUT should not send a
   unicast Neighbor Solicitation to TR1.

   Step 14:
   The HUT must not change the state of the TR1's NCE. After receiving the Echo
   Request from TR1, the HUT should send an Echo Reply using the same Link-Layer Address.
   After DELAY_FIRST_PROBE_TIME, the HUT should not send a unicast Neighbor
   Solicitation to TR1.

Possible Problems

  * None.