Black Box LRA005A-R2 - Manual (Page 175)

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER REFERENCE MANUAL
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ppp i&g_iface ipxcp {local | remote} compress [cipx [slots [flag]] | none | allow [on | off]]
ppp i&g_iface ipxcp {local | remote} network [on | off | allow [on | off]]
ppp i&g_iface ipxcp {local | remote} node [on | off | allow [on | off]]
ppp i&g_iface ipxcp {local | remote} default
Authentication of users
ppp i&g_iface chap user username [password]
ppp i&g_iface pap user username [password]
Description
The Router uses industry-standard PPP as defined by RFC 1661 to transfer data over WAN interfaces, for
example, modemX and syncX.
When a point-to-point connection is established between Router routers and/or other routers, or
peers, several layers of negotiation must occur between local and remote ends. This negotiation process
defines a mutually acceptable configuration for data to transfer between peer_local and peer_remote.
Negotiation layers defined for each interface are:
• Link control protocol (LCP)
• IP control protocol (IPCP) see RFC 1332
• IPX control protocol (IPXCP) see RFC 1552
• Password authentication protocol (PAP) see RFC 1334
• Challenge handshake authentication protocol (CHAP) see RFC 1334
The ppp command configures a specific interface’s layers of negotiation. It also displays the current
configuration of a specific interface.
NOTE
The ppp command is inherently complex because of its wide variety of negotiation
options. Unless you have detailed knowledge of PPP, we recommend you consult with
Technical Support before changing default PPP configurations. Defaults are configured
when you first install the Router.
The most common reason a Router user may issue the ppp command is to disable CHAP
authentication so the Router can communicate with another vendor’s router. Other variations of ppp
require more detailed knowledge of the PPP protocol. Refer to the PPP RFC 1661 for more information.
Before the negotiation process can take place between peer_local and peer_remote, the following events
must occur:
• first a physical connection must be established—a phone call, leased line, or ISDN call
• once the physical connection is established, each end (peer_local and peer_remote) must exchange LCP
packets to configure and test their connection