Cisco Systems 78-11741-02 Wireless Office Headset User Manual


 
Configuring IP Addressing
Configuring Address Resolution Methods
IPC-18
Cisco IOS IP Configuration Guide
Configuring HP Probe Proxy Name Requests
HP Probe Proxy support allows the Cisco IOS software to respond to HP Probe Proxy name requests.
These requests are typically used at sites that have HP equipment and are already using HP Probe Proxy.
Tasks associated with HP Probe Proxy are shown in the following two tables.
To configure HP Probe Proxy, use the following command in interface configuration mode:
To configure HP Probe Proxy, use the following command in global configuration mode:
See the “HP Hosts on a Network Segment Example” section at the end of this chapter for an example of
configuring HP hosts on a network segment.
Configuring the Next Hop Resolution Protocol
Routers, access servers, and hosts can use Next Hop Resolution Protocol (NHRP) to discover the
addresses of other routers and hosts connected to a nonbroadcast multiaccess (NBMA) network.
Partially meshed NBMA networks are typically configured with multiple logical networks to provide
full network layer connectivity. In such configurations, packets might make several hops over the NBMA
network before arriving at the exit router (the router nearest the destination network). In addition, such
NBMA networks (whether partially or fully meshed) typically require tedious static configurations.
These static configurations provide the mapping between network layer addresses (such as IP) and
NBMA addresses (such as E.164 addresses for SMDS).
NHRP provides an ARP-like solution that alleviates these NBMA network problems. With NHRP,
systems attached to an NBMA network dynamically learn the NBMA address of the other systems that
are part of that network, allowing these systems to directly communicate without requiring traffic to use
an intermediate hop.
The NBMA network is considered nonbroadcast either because it technically does not support
broadcasting (for example, an X.25 network) or because broadcasting is too expensive (for example, an
SMDS broadcast group that would otherwise be too large).
The Cisco Implementation of NHRP
The Cisco implementation of NHRP supports the IETF draft version 11 of NBMA Next Hop Resolution
Protocol (NHRP).
The Cisco implementation of NHRP supports IP Version 4, Internet Packet Exchange (IPX) network
layers, and, at the link layer, ATM, Ethernet, SMDS, and multipoint tunnel networks. Although NHRP
is available on Ethernet, NHRP need not be implemented over Ethernet media because Ethernet is
capable of broadcasting. Ethernet support is unnecessary (and not provided) for IPX.
Command Purpose
Router(config-if)# ip probe proxy
Allows the Cisco IOS software to respond to HP Probe Proxy name
requests.
Command Purpose
Router(config)# ip hp-host hostname ip-address
Enters the host name of an HP host (for which the router is acting as
a proxy) into the host table.