NAME

  Test v6LC.2.2.16 - Router Advertisement Processing, Neighbor Cache (Hosts Only)
  Part B: RA processing, NCE INCOMPLETE

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 B: RA processing, NCE INCOMPLETE
   4. TR1 transmits Echo Request B. TR1 does not respond to any Neighbor Solicitations from the
      HUT.
   5. Observe the packets transmitted by the HUT and check the NCE of TR1 on the HUT.
   6. TR1 transmits Router Advertisement A.
   7. Check the NCE of TR1 on the HUT and observe the packets transmitted by the HUT.

Observable Results

  Part B
   Step 5:
   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 7:
   The HUT must update the state of TR1's NCE to STALE and update its Link-layer
   Address. Because the HUT's NCE for TR1 is in state STALE, the HUT should send an Echo
   Reply to TR1's earlier request using the received Link-Layer address and enter state
   DELAY. After DELAY_FIRST_PROBE_TIME, the HUT should send a unicast Neighbor
   Solicitation to TR1.

Possible Problems

  * None.