Test v6LC.2.2.16 - Router Advertisement Processing, Neighbor Cache (Hosts Only)
Part G: RA with SLLA unchanged, NCE PROBE
Verify that a host properly updates its Neighbor Cache upon receipt of a Router
Advertisement.
* [ND] Sections 6.3.4 and 7.3.3
* Packet generator
* Monitor to capture packets
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
|
Part G: RA with SLLA unchanged, NCE PROBE
31. Repeat Steps 19 through 30, transmitting Router Advertisement A in Step 28 with the same
Source Link-layer Address.
32. Check the NCE of TR1 on the HUT and observe the packets transmitted by the HUT.
Part G
Step 20:
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 22:
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 25:
The HUT should update the state of TR1's NCE to STALE, send an Echo Reply to
TR1 using the same Link-Layer address and enter state DELAY.
Step 27:
The HUT should update the state of TR1's NCE to PROBE by sending a unicast
Neighbor Solicitation to TR1.
Step 30:
The HUT must not change the state of the TR1's NCE. The HUT must continue to
be in state PROBE and send unicast Neighbor Solicitations to TR1 up to
MAX_UNICAST_SOLICIT times.
* None.