Question

problem setting alternate netmask in Solaris 10

Asked by: con2007

For Solaris 10 (11/06) we are trying to create a netmask of 255.255.240.0 but cannot seem to get it to work.  Here is what is configured so far:

root@03# cat netmasks
#
# The netmasks file associates Internet Protocol (IP) address
# masks with IP network numbers.
#
#       network-number  netmask
#
# The term network-number refers to a number obtained from the Internet Network
# Information Center.
#
# Both the network-number and the netmasks are specified in
# "decimal dot" notation, e.g:
#
#               128.32.0.0 255.255.255.0
#
172.17.20.0     255.255.252.0
# Private
172.16.40.0     255.255.240.0
root@03#


e1000g5: flags=69040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4,NOFAILOVER,STANDBY,INACTIVE> mtu 1500 index 5
        inet 172.16.40.11 netmask ffff0000 broadcast 172.16.255.255
        groupname grpports35
        ether 0:15:17:35:a3:1b
root@02#
root@02# cat /etc/hostname.e1000g5
172.16.40.11 netmask + broadcast + deprecated \
group grpports35 -failover standby up
root@02#


We've gone into the /etc/hostname.e1000g5 and modified the line to read:

172.16.40.11 netmask 255.255.240.0 broadcast + deprecated \
group grpports35 -failover standby up

and that worked, but this is not a supported method.  Changing it in netmasks should have done this - is there another file in Solaris 10 that we are not including?

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Asked On
2007-06-28 at 11:46:33ID22665077
Tags

solaris

,

netmask

,

10

Topics

Unix Setup

,

Unix Networking

,

Sun Solaris

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: Jim_CoynePosted on 2007-06-28 at 12:03:32ID: 19383584

bash# ifconfig eri0 172.16.40.11 netmask 255.255.240.0 up

or

edit the file /etc/hostname and /etc/netmasks (reboot)

 

by: con2007Posted on 2007-06-28 at 12:05:58ID: 19383608

we've modified the /etc/hostname and /etc/netmasks, but it will not take on reboot

 

by: Jim_CoynePosted on 2007-06-28 at 12:21:18ID: 19383786

The /etc/netmasks should say:   172.16.32.0 255.255.240.0

172.16.32.0 is the subnet ID and valid host range is 172.16.32.1 - 172.16.47.254

 

by: con2007Posted on 2007-06-29 at 08:10:05ID: 19390397

turns out our networking department gave us the wrong subnet and masks and the calculations were not computing correctly.  This was why Solaris was not accepting the settings.  Jim - although your response didn't solve our problem, you did give correct advice so I will award you the points!

thanks for your speedy reply!

20120131-EE-VQP-002

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