Information Technology Reference
In-Depth Information
database_svc 100016
rexd 100017 rex
alis 100018
sched 100019
llockmgr 100020
nlockmgr 100021
TCP/IP Initialization During System Boot
The TCP/IP configuration is initialized during system boot as follows:
1.
The kernel runs
/sbin/init
.
2.
The
/sbin/init
program executes the
/sbin/rcS
script to bring the sys-
tem up to single user by executing the “S” scripts in
/etc/rcS.d
directory.
3.
The
/etc/rcS.d/S30network.sh
script runs to configure all IPv4 and
IPv6 network interfaces as defined by the
/etc/
files (
nodename
,
hostname.
interface
, and so on). This provides the basic networking
support for diskless clients and AutoClients.
4.
The
/etc/rcS.d/S30rootusr.sh
script runs to perform some cleanup
and mount the
/usr
file system.
5.
Once the system is ready to change state to run level 2, the
/sbin/init
program executes the
/sbin/rc2
script, which in turn executes the “S”
scripts in
/etc/rc2.d
directory. Those that relate to networking are:
S60inet
—Set up routing, IPv4, and IPv6 tunnels
➤
S71ldap.client
—LDAP Cache Manager
➤
S71rpc
—Start RPC services along with the NIS server and the
NIS+ server, if applicable
➤
S72inetsvc
—Start the
inetd
process and the Domain Name System
(DNS) server
➤
S73nfs.client
—Start the NFS client
➤
S74autofs
—Start the automount daemon (
automountd
)
➤
6.
Once the system is ready to change state to run level 3, the
/sbin/init
program executes the
/sbin/rc3
script, which in turn executes the “S”
scripts in
/etc/rc3.d
directory. Those that relate to networking are as
follows:
S15nfs.server
—Start the NFS server
➤
S16boot.server
—Start the Boot Parameter Daemon
(
rpc.bootparamd
)
➤
