Osi Data Communications; Clnp - Nortel Optical Multiservice Edge 6130 Planning Manual

10-16 Appendix A: Data communications planning
For more information about ARP, see
Proxy ARP implementation rules
You must observe the following rules when you implement proxy ARP. At
gateway network elements, you must:
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OSI data communications

The Data Communications Network Planning Guide, NTR710AM provides
information on DCN planning for some OSI-based Nortel products. This guide
includes general information on OSI data communications and addressing and
can be used as a reference for OSI data communications information.

CLNP

OSI Connectionless Network Protocol (CLNP) is a network layer 3 protocol
which provides services to the upper transport layer, similar to the Internet
Protocol (IP) in the a TCP/IP environment. CLNP is often referred to as
ISO-IP. CLNP uses NSAP addresses to identify network devices. The
OME6130 supports CLNP protocol as specified in ISO/IEC 8473-1.
The OME6130 provides the ability to tunnel IP communications over OSI. The
OME6130 will route (forward) only IP packets and OSI (CLNP) PDUs
(support of reassembly of segmented DPDUs).
In order to communicate to the OME6130 NE in an OSI network, the
OME6130 can use iISIS routing protocol with auto-tunneling to allow the OSI
route to the OME6130 NE to be learnt through the OSI network. Once iISIS
routing is provisioned, static (SGRE) or dynamic (AGRE) IP over OSI tunnels
can be provisioned on the network element.
In order to provide communications through the OSI network, the following
items need to be performed:
Optical Multiservice Edge 6130
assign a subnet on the DCN router port that connects to the LAN port of
the gateway network element that is large enough to support the LAN port
and the router ID address of every network element for which the gateway
network element will proxy ARP
provision the IP addresses of the proxy ARP neighbours for which the
gateway network element will respond for. The IP addresses should be of
the hosts, not the network.
provision a maximum of 14 proxy ARP neighbours
ensure that the DCN router interfaces connected to the LAN interface will
ARP for the specified ARP neighbours
provision a static route to the DCN network. At the remote/neighbouring
NEs, static routes do not need to be provisioned to the router
Note: OME6130 supports a maximum CLNP packet size of 512 bytes.
NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
ARP on page 10-96.