TCP/IP Configuration and Management Manual

Overview of NonStop TCP/IP
TCP/IP Configuration and Management Manual—427132-004
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Hardware and Software Requirements

Path MTU Discovery is not supported on UDP-type sockets.

PVCs must be added specifying the IP address of the other endpoint.

MIB is not supported.

ARP table entries associated with PVCs are not aged.

The retry-timeout value for connection attempts to an ATMARP server is 10
seconds. Maximum retry count is 5 before attempting another server if more than
one is configured.

Only 20 octet (40 digit) NSAP addressing is supported. ATM Subaddresses are not
supported.

The ATM subsystem does not negotiate the AAL CPCS-SDU size using the ATM
signalling protocol.
The TCP/IP process supports both SVCs and PVCs. (NonStop TCP/IP does not
support a PVC connection to an ARP server.) Each ATM type SUBNET can be
configured to operate as an ATMARP server.
The TCP/IP process is compatible with IP over ATM networks that are based on the
older RFC-1577 document. When used as an ATMARP server, clients that are RFC-
1577 based are also supported.
Hardware and Software Requirements
The ATM SUBNET requires that the system be configured with the ATM ServerNet
Access Platform software and hardware.
The TCP/IP SCF product module version G06.00 or later is required to add and
manage SUBNETs of type ATM.
To use ATM on the Integrity NonStop NS-series server, you must connect to an IOMF2
CRU in a NonStop S-series I/O enclosure. For more information, see the Introduction
to Networking for HP Integrity NS-Series Servers.
Viewing ARP and ATMARP Tables
The ARP and ATMARP tables can be viewed and changed using SCF. The ENTRY
object allows you to view the ATMARP tables. ARP and ATMARP table entries added
using SCF are named (such as #arp1); whereas, table entries added dynamically by
the TCP/IP process are not named. In cases of unnamed table entries, you can enter
the IP address of the entry to view or delete the individual entry. For more information
about the SCF commands for viewing and altering the ARP and ATMARP tables, see
Section 4, SCF Reference.