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Full Discussion: Confused with entries in /etc/hostname.<interface> file...
Operating Systems Solaris Confused with entries in /etc/hostname.<interface> file... Post 302243310 by Reboot on Saturday 4th of October 2008 04:30:32 PM
Old 10-04-2008
Confused with entries in /etc/hostname.<interface> file...
Hi.. Every one,

I have servers installed with solaris 10.We have configured our servers for IPMP and we have respective entries in /etc/hostname.<interface> for every physical interface.
for example one of the file contains :

Code:
# more /etc/hostname.ce6
super-ce6 netmask + broadcast + group accgrp deprecated -failover up addif super-dummy netmask + broadcast + deprecated up

Can any one explain me what these entries do...????

What is the purpose of " addif " and " -failover " also why two " up "
are used.

Code:
o/p of ifconfig -a :
 
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
ce5: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 3
        inet 10.66.23.112 netmask ffffff00 broadcast 10.66.23.255
        ether 0:14:4f:67:cb:d3
ce6: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 4
        inet 10.66.22.74 netmask ffffff00 broadcast 10.66.22.255
        groupname accgrp
        ether 0:14:4f:69:c2:c8
ce6:1: flags=1040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4> mtu 1500 index 4
        inet 10.66.22.108 netmask ffffff00 broadcast 10.66.22.255
ce6:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
        inet 10.66.22.64 netmask ffffff00 broadcast 10.66.22.255
ce10: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER> mtu 1500 index 2
        inet 10.66.22.84 netmask ffffff00 broadcast 10.66.22.255
        groupname accgrp
        ether 0:14:4f:69:c2:e0

 
o/p of more /etc/hosts:
 
# more /etc/hosts
10.66.22.64     super  loghost 
10.66.22.74     super-ce6
10.66.22.84     super-ce10
10.66.22.108    super-dummy
10.66.23.112    super-ce5

Thanks in Advance.....
Last edited by Reboot; 10-04-2008 at 05:43 PM..
 

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LEARN ABOUT CENTOS

ipcalc

IPCALC(1)						      General Commands Manual							 IPCALC(1)

NAME

       ipcalc - perform simple manipulation of IP addresses

SYNOPSIS

       ipcalc [OPTION]... <IP address>[/prefix] [netmask]

DESCRIPTION

       ipcalc provides a simple way to calculate IP information for a host.  The various options specify what information ipcalc should display on
       standard out. Multiple options may be specified.  An IP address to operate on must always be specified.	Most  operations  also	require  a
       netmask or a CIDR prefix as well.

OPTIONS

       -c, --check
	      Validate the IP address under the specified family.  If no address family is specified, IPv4 is assumed.

       -4, --ipv4
	      Specify IPv4 address family (default).

       -6, --ipv6
	      Specify IPv6 address family.

       -b, --broadcast
	      Display the broadcast address for the given IP address and netmask.

       -h, --hostname
	      Display the hostname for the given IP address.

       -m, --netmask
	      Calculate  the netmask for the given IP address. It assumes that the IP address is in a complete class A, B, or C network. Many net-
	      works do not use the default netmasks, in which case an inappropriate value will be returned.

       -p, --prefix
	      Show the prefix for the given mask/IP address.

       -n, --network
	      Display the network address for the given IP address and netmask.

       -s, --silent
	      Don't ever display error messages.

AUTHORS

       Erik Troan <ewt@redhat.com>
       Preston Brown <pbrown@redhat.com>

       IPv6 supported wedged in by David Cantrell <dcantrell@redhat.com>

REPORTING BUGS

       Report bugs at http://bugzilla.redhat.com/

COPYRIGHT

       Copyright (C) 1997-2008 Red Hat, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

Red Hat, Inc.							   April 30 2001							 IPCALC(1)
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