HP-UX Mobile IPv4 A.03.01 Administrator's Guide

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Chapter 10
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— B: indicates the Foreign Agent is busy and cannot accept Registration
Requests from additional Mobile Nodes.
— H: the agent offers Home Agent services on the link used to send this
advertisement.
— F: the agent offers Foreign Agent services on the link used to send this
advertisement.
— T: the agent support Reverse Tunneling. This flag is always set.
— CARE-OF ADDRESSES: The number of Care-of Addresses advertised, followed by a
list of Care-of Addresses.
For more information on the above fields, refer to RFC 3344, IP Mobility Support for
IPv4.
•Any PREFIX-LENGTH EXTENSION fields. If the ICMP Router Advertisement contained
router addresses, the Agent Advertisement may include a Prefix-length Extension
with entries that correspond to the router addresses. The prefix length indicates the
number of leading bits that define the network prefix for the router address. The
fields are:
— Type: ICMP type code that indicates a prefix-length extension. This value is
always 19.
— Number of Prefix-Lengths: the number of prefix lengths. This should match
the number of router addresses in the Router Advertisement.
— PREFIX-LENGTHS: the prefix lengths, in bits. The order of the prefix lengths
matches the order of the corresponding router address in the Router
Advertisement.
For more information on the above fields, refer to RFC 3344, IP Mobility Support for
IPv4.
•An ADVERTISEMENT CHALLENGE EXTENSION. This extension is only present on
Foreign Agents configured for AAA. The fields are:
— Type: type code that indicates an Advertisement Challenge Extension. This
value is always 24.
— Length: length of the challenge, in bytes. This value is always 4.
— Challenge: the current challenge value, in hexadecimal.
For more information on the above fields, refer to RFC 3012, Mobile IP
Challenge/Response Extensions.
Example
mipadmin> -adv -v
_________________________ ROUTER ADVERTISEMENT ON lan1 _________________
ICMP Packet Type: 9 ICMP Code: 16
Checksum: 0x9075 Number of Routers: 2
Router Address Size: 2 Advertisement Lifetime (secs): 60
ROUTERS (2)
10.10.10.2 1 10.10.10.3 2