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CAPWAP Editors Report (PowerPoint)

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					July 2007




            CAPWAP Protocol
            DHCP Extensions
                  July 2007

              pcalhoun@cisco.com
 July 2007


                           History
CAPWAP base specification defined a DHCP option
The DHCP option was identified as being inconsistent with other
    DHCP options
With the guidance of the DHC WG Chair, we agreed to create a
    separate Internet-Draft (available as draft-calhoun-dhc-
    capwap-ac-option-00.txt)
The DHC WG Chair stated the current spec is acceptable.
The CAPWAP Chairs recently decided the document should be a
    CAPWAP WG item (will be renamed to draft-ietf-capwap-
    dhc-ac-option-00.txt)
  July 2007


     CAPWAP AC DHCPv4 Option
0                   1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| option-code | option-length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                               |
+      AC IPv4 Address          +
|                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|            ...                |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

A CAPWAP WTP, acting as a DHCPv4 client, SHOULD request the CAPWAP AC DHCPv4
     Option in a Parameter Request List.
If configured with a (list of) CAPWAP AC address(es), a DHCPv4 server SHOULD send the
     client the CAPWAP AC DHCPv4 option, even if this option is not explicitly requested by the
     client.
A CAPWAP WTP, acting as a DHCPv4 client, receiving the CAPWAP AC DHCPv4 option
     MAY use the (list of) IP address(es) to locate AC. The CAPWAP protocol provides guidance
     on the WTP's discovery process.
  July 2007


     CAPWAP AC DHCPv6 Option
0                   1                   2                   3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|          option-code          |         option-length         |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
+                                                               +
|                                                               |
+                       AC IPv6 Address                         +
|                                                               |
+                                                               +
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                              ...                              |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

A CAPWAP WTP, acting as a DHCPv6 client, SHOULD request the CAPWAP AC DHCPv6
     Option in a Parameter Request List.
If configured with a (list of) CAPWAP AC address(es), a DHCPv6 server SHOULD send the
     client the CAPWAP AC DHCPv6 option, even if this option is not explicitly requested by the
     client.
A CAPWAP WTP, acting as a DHCPv6 client, receiving the CAPWAP AC DHCPv6 option
     MAY use the (list of) IP address(es) to locate AC. The CAPWAP protocol [5] provides
     guidance on the WTP's discovery process.
    July 2007


                      Next Steps

•       Re-submit the spec as a WG work item once
        the windows opens
•       WG Last Call

				
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