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RFC 2002bis

RFC 2002bis

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RFC 2002bis

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  1. RFC 2002bis Charles E. Perkins http://www.iprg.nokia.com/~charliep

  2. Changes from RFC 2002 • Foreign agents SHOULD support Reverse Tunneling • Advertisements MAY be issued more often than once per second • SPI number MUST be included as part of authentication calculation

  3. New appendices • Added new appendix with existing and proposed number assignments • Added new appendix with change information • Added new appendix with overall packet format examples for advertisement and registration messages

  4. ARP limitations • Mobile node MUST NOT use ARP when away from home • Mobility agents SHOULD NOT advertise other default routers • Foreign agent MUST NOT broadcast ARP for mobile node’s IP address

  5. Bits • Home agent MUST ignore ‘V’ bit • Home agent MUST ignore ‘B’ bit if it does not support broadcast (instead of rejecting the registration) • Registrations with unknown care-of address and ‘D’ bit zero MUST be rejected • Mobile node MUST ignore reserved bits in advertisements

  6. More changes • Mobile node MAY use care-of address with multicast • Mobile node MAY use source IP address of advertisement as default router • Foreign agent MAY limit number of pending registrations (typically 5?)