TCP/IPv6 Configuration and Management Manual (G06.24+)

SCF Reference for NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
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ADD SUBNET Command for TCP6MAN
FAMILY INET
specifies that the socket-family type of the SUBNET as AF_INET (IPv4). The
default value for the FAMILY attribute is INET.
IRDP {ON | OFF}
enables (ON) or disables (OFF) the ICMP Router Discovery Protocol on the
SUBNET interface. IRDP is a mechanism for locating default routers and is
specified in RFC 1256. IRDP also must be enabled on any local LAN routers. If
redundant routers are configured with route hold-down times and advertisement
intervals of approximately 30 seconds, IRDP can be used to provide a “black hole,"
or dead gateway, detection mechanism. The NonStop TCP/IPv6 subsystem
implements IRDP using IP broadcasts rather than IP multicasts. The default is
OFF.
SUBNETMASK mask-val
specifies the part of the IPv4 address that must be masked to borrow bits from the
host portion of the address and use them to designate a SUBNET. Subnet masks
enable you to generate additional subnets from CLASS A, CLASS B and CLASS C
networks. This mask-val is specified as dotted-decimal or hexadecimal notation.
If it is not specified, it defaults to the corresponding network mask of the specified
IP address. A non-contiguous mask value is not supported. Because a non-
contiguous mask value is not supported, netmask values such as 0.255.255.0,
255.0.255.0, 0.0.255.0 are considered invalid.
FAILOVER {SHAREDIP | NONSHAREDIP}
enables the SUBNET to be failover-capable using these configurations:
•
SHAREDIP has the same IP address as the associated SUBNET in the
failover configuration.
•
NONSHAREDIP has a different IP address than the associated SUBNET in the
failover configuration.
MTU size
alters the maximum transfer unit (MTU) for messages that the system transmits on
the link. The minimum value is 512 bytes. The maximum value is 65535 bytes. The
actual maximum value is determined from the interface with SLSA as the PIF's
Max_Frame_Size - 14. The value 14 is subtracted because MTU does not include
the Ethernet header overhead of 14 bytes.
LNPTPLIST "tcp6sam list"
specifies that this SUBNET is part of a logical network partition and specifies the
transport-service provider processes (TCP6SAM processes) that provide access
for this partition. If this attribute is not specified, this SUBNET is part of the default
LNP. The maximum number of TCP6SAM processes for a configured LNP is two.