TCP/IPv6 Configuration and Management Manual (G06.24+)
SCF Reference for NonStop TCP/IPv6
HP NonStop TCP/IPv6 Configuration and Management Manual—524523-008
8-41
ADD SUBNET Command for TCP6MAN
•
When a SUBNET is added, a corresponding route to this SUBNET is added 
automatically. Both the SUBNET and the route are placed in the STOPPED state. 
To initiate the operation of the object, you must start it with the START command.
•
When adding a SLSA SUBNET type, the DEVICENAME does not begin with a 
dollar sign ($) character.
•
SUBNETs from the conventional TCP/IP and NonStop TCP/IPv6 environments 
cannot share a LIF.
•
When using LNP in a DUAL-mode environment, if you want to use tunneling, you 
should use configured tunneling rather than automatic tunneling because the 
automatic tunnel associates itself with the first available DUAL-mode SUBNET and 
is not available to applications in LNPs that differ from the LNP of that SUBNET. To 
use tunneling in an LNP environment, add a configured tunnel to each LNP that 
needs tunneling. The configured tunnel is associated with the LNP by the IPTSRC 
attribute; the LNPTPLIST attribute is not valid for the configured-tunnel type 
SUBNET. 
•
An IPv6 SUBNET is ready for data transfer as soon as you add and start it. But if 
you want to enable the tunnels on the IPv6 SUBNET, you have to alter the 
SUBNET and specify FAMILY INET6, IPV6 UP.
•
To start the loopback SUBNET, you have to do an ALTER SUBNET command as 
follows (the first example is for INET mode and the second one is for INET6 
mode):
These are some guidelines to use when configuring Ethernet failover:
•
The ALTER SUBNET command is required with the ADD SUBNET command to 
link the two LIFs for failover.
•
When selecting the LIF pair for the failover SUBNET pair, you should select LIFs 
on different adapters.
•
When using Fast Ethernet adapters or Gigabit Ethernet adapters connected 
directly to Ethernet switches, failover recovery time might be impacted by the 
spanning tree feature used in a switch.
•
You cannot mix adapter types in an Ethernet failover pair.
•
When using multiple failover pairs on the same network SUBNET and adding static 
routes, it’s best to add a copy of each route to one SUBNET in each failover pair. 
->ASSUME PROCESS $ZZTCP
->ABORT SUBNET LOOP0
->ALTER SUBNET LOOP0, IPADDRESS 127.1
->ASSUME PROCESS $ZZTCP
->ABORT SUBNET LOOP0
->ALTER SUBNET LOOP0, IPADDRESS 127.1
->ALTER SUBNET LOOP0, FAMILY INET6, IPV6 UP










