TCP/IP (Parallel Library) Configuration and Management Manual

SCF Reference for Parallel Library TCP/IP
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
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ALTER SUBNET Command for TCPMAN
IRDP
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 must also 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 Parallel Library TCP/IP subsystem
implements IRDP using IP broadcasts rather than IP multicasts.
ADDALIAS ip-addr
allows the addition of the alias IP address to the subnet specified in the ALTER
SUBNET command. The IP alias feature allows a process to be known to the
Internet by different IP addresses.
DELETEALIAS ip-addr
allows the deletion of alias IP addresses that have been added by the ADDALIAS
attribute.
ASSOCIATESUB “subnet-name"
links two adapters together to be a failover-pair configuration. As the result of this
command, an IP alias address is configured for each subnet internally. For a
SHAREDIP configuration, the RESERVEDIP address is configured as an alias
address for both subnets. For a NONSHAREDIP configuration, the subnet IP
address of the first subnet is configured as an alias address of the second subnet
and vice-versa.
RESERVEDIP ip-addr
is a required parameter for the two subnets configured to be failover-enabled and
also share the same subnet IP address. This parameter is not valid for failover
configurations that have two different subnet IP addresses.
Examples
The following examples alter the subnets in all TCPMONs.
-> ALTER SUBNET $ZZTCP.*.SN1, SUBNETMASK 255.255.0.0
-> ALTER SUBNET $ZZTCP.*.SN2, IPADDRESS 172.17.217.234