HP 200 Series Services And Applications page 11

Features of HP Routers
Routing Services and Protocols
HP routers support AppleTalk Phase 2 routing over Ethernet links or
synchronous WAN links. LocalTalk links to HP routers are not available.
AppleTalk Phase 1 routing is not supported; however, it can be relayed using
the bridging function of the router. For more information, refer to the
"AppleTalk Phase 2 Routing Service" note in this manual.
DECnet Phase IV
The DECnet routing service for HP routers supports the DECnet Phase IV
routing standard. As specified by this standard, large networks are
subdivided into "areas". Typically, areas are composed of one or more
geographically separate LANs. Each router is part of one of these areas;
there can be multiple routers within an area. Routing within an area is called
level 1 routing and routing between areas is called level 2 routing. HP
routers support both level 1 and level 2 routing.
HP routers can interoperate over Ethernet with routers from DEC; however,
direct interoperability over serial links (WAN links) is not supported. For
more information, refer to the "DECnet Routing Service" note in this manual.
N o t e
The DECnet routing service does not support routing on token ring
(IEEE 802.5) networks.
Xerox XNS
The XNS (Xerox Network Systems) routing service on HP routers is defined
by the Xerox Graybook standard for the XNS protocol stack. Routing is
based on the Internet Datagram Protocol (IDP). The Routing Information
Protocol (RIP), Error Protocol, and Echo Protocol used in XNS are also
supported.
Proprietary adaptations of XNS used by vendors such as 3Com and
Ungermann-Bass are not currently supported. Apollo Domain routing,
which is also based on Xerox XNS, is not currently supported.
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