NAME

  Test v6LC.2.3.16 - Redirect  Transmit (Routers Only)
  Part B: Send Redirect to Alternate Router


Purpose

   Verify that a router properly handles transmission of Redirect messages.


References

  * [ND]  Sections 8.2


Resource Requirements

  * Packet generator
  * Monitor to capture packets


Test Setup

  Common Setup 1.1 is performed at the beginning of each test part. The Common Test
  Cleanup Procedure is performed after each part.
                    i. TN2 is an on-link neighbor on Link B to TN1 (instead of residing on Link A
                       depicted in Common Topology).
                   ii. RUT advertises prefix X on Link B.


Procedure

  Part B: Send Redirect to Alternate Router
   3. Configure TN2 to be an off-link neighbor residing on Link A as depicted in the Common
      Topology.
   4. TN1 transmits an Echo Request to TN2's unicast global address and a first hop through the RUT.
   5. Observe the packets transmitted by the RUT.


Observable Results

  Part B
   Step 5: The RUT should transmit a Redirect message with the following values:
       IPv6 Hop Limit          255
       IPv6 Source             Link-Local address of RUT
       IPv6 Destination        TN1's address (used in Echo Request's Source Address)
       Target                  TR1's link-local address
       Destination             TN2's unicast global address
       TLL Option              TR1's link-layer address if known
       Redirected Header       TN1's Echo Request without total packet exceeding 1280
                               bytes.


Possible Problems

  * The RUT may not support the generation of Redirect messages.