NAME

  Test v6LC.2.1.9 - Neighbor Solicitation Processing, NCE State INCOMPLETE
  Part A: Unicast Neighbor Solicitation

Purpose

  Verify that a node properly updates its neighbor cache upon receipt of neighbor solicitations
  when the NCE of the neighbor is in state INCOMPLETE.

References

  * [IPv6-ARCH]  Section 2, 2.8
  * [ND]  Sections 7.2.3 and 7.2.4

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.

Packet A
IPv6 Header
Next Header: 58
Source Address: TN1's Link-local Address
Destination Address: NUT's Link-local Address

ICMPv6 Echo Request

Neighbor Solicitation B
IPv6 Header
Next Header: 58
Destination Address: NUT's Link-local Address
Source Address: TN1's Link-local Address

Neighbor Solicitation
Target Address: NUT's Link-local Address
Source Link-Layer Address: TN1's Ethernet address

Neighbor Solicitation C
IPv6 Header
Next Header: 58
Destination Address: NUT's Solicited-node Multicast Link-local Address
Source Address: TN1's Link-local Address

Neighbor Solicitation
Target Address: NUT's Link-local Address
Source Link-Layer Address: TN1's Ethernet address

Packet A
IPv6 Header Next Header: 58 Source Address: TN1's Link-local Address Destination Address: NUT's Link-local Address
ICMPv6 Echo Request

Procedure

  Part A: Unicast Neighbor Solicitation
   1. TN1 transmits Echo Request A.
   2. Check the NCE of TN1 on the NUT and observe packets transmitted by the NUT.
   3. TN1 transmits Neighbor Solicitation B.
   4. Check the NCE of TN1 on the NUT and observe packets transmitted by the NUT.
   5. TN1 transmits an Echo Request to the NUT.
   6. Check the NCE of TN1 on the NUT and observe packets transmitted by the NUT.

Observable Results

  Part A

   Step 2: 
   The NUT should create a Neighbor Cache Entry for TN1 and set the state of the
   Entry to INCOMPLETE. The NUT should send a multicast Neighbor Solicitation to TN1.

   Step 4: 
   After receiving TN1's Neighbor Solicitation, the NUT should send its queued Echo
   Reply to TN1. The NUT should then update the NCE of TN1 to state STALE and update its
   link-layer address for TN1 accordingly. The NUT should reply to Neighbor Solicitation B by
   sending a Neighbor Advertisement.

   Step 6: 
   The NUT should respond to the Echo Request by sending an Echo Reply and set the
   state of the Entry to DELAY. After DELAY_FIRST_PROBE_TIME, the NUT should send
   a Unicast Neighbor Solicitation to TN1.

Possible Problems

  * None.