Specifications

SET/DEFINE/CHANGE Commands
4-62
PORT PPP IPCP ADDRESS
Syntax
Description
Specifies whether the access server should attempt to negotiate the IP address for
both ends of this link. This command accepts a port-list or ALL as a parameter for
the PORT keyword.
If enabled, the access server always attempts to negotiate using IPCP option
number 3, ADDRESS, first. This is the preferred method. If the attached device
does not support option number 3, the access server falls back and attempts to
negotiate using option number 1, ADDRESSES.
The access server always proposes the access server IP address as its local
address. If the port has an IP address assigned to it, the access server requires that
the attached device use that address. If no address has been assigned to the port,
the attached device may inform the access server of its IP address via negotiation.
If the peer’s proposed address is acceptable, (that is, it is part of the access server
subnet and not currently held by another port on the access server) the access
server allows the peer to use this address. Otherwise, the peer’s proposed address
is rejected.
If these address negotiations fail, it is possible the link will come up. However,
each peer may have inconsistent knowledge about the system with which it is
exchanging IP datagrams.
If the link is open, the access server assumes that the peer has the address
currently set up on the port. IP datagrams for that IP address will be forwarded. If
there is no address associated with the port, the access server does not forward IP
datagrams.
Restrictions
• The DEFINE and CHANGE commands require privileged status. The SET
command requires secure status.
• You must be a privileged user to change a port other than your own.