I have a remote CentOS7 server that has two network cards. Each card has four ports and port one of card one was defined with the IP address assigned to the server. So far, so good and it's been working for over a year. We have now got cables sorted out so there are four paths... (4 Replies)
Our lpars is currently running on 2 different vlans (20, 30). Now we have a requirement that vlan 30 needs to be change to vlan 31 at the same subnet. I'm not sure on what is the best approach for this or what change is involve on the AIX side.
This is our setup.
Network switch -... (5 Replies)
Hi. my english is not so good. sorry.
i have some problem. My isp give me second ip from subnet. One network is working, but secong don't.
fxp0 - my network
dc0 - network isp (that working)
re0 - network isp (don't working)
i try use ng_one2many, but it's don't working
ngctl mkpeer... (0 Replies)
I am new to this forum so please bare with me. I did search for this answer prior to posting but no luck.
Running an AIX NIM Master at 5.3TL9SP4, with about 100 clients. The subnet of one of the networks defined in the NIM env has changed. When I go to Manage Networks, Change/Show... (0 Replies)
I have a task to edit the subnet mask in almost 100+ solaris servers.Few of the servers are configured with IPMP.There will be no change of IP address or default gateway.If its a single IP we can bring NIC down,change the subnet mask in /etc/netmasks,then bring the NIC back to normal.But... (3 Replies)
I have Digital UNIX V4.0B (Rev. 564) on alpha machine.
I'm trying to acces network in subnet (192.168.1.x).
Ip on Alpha comp. is from 192.168.3.X subnet. My default gateway on this network is 192.168.3.1 and it working OK from other machines. This machine is visible from same subnet... (2 Replies)
Hi, I'm new to unix and have absolutely no experience with it. I am trying to change the network setting on the only computer on our network with SCO Unix. We switched ISP's and now have a new set of IP's. I can't for the life of me figure out how to go in and change these settings, please help.... (12 Replies)
I have about 30 computers for users with subnet mask x.x.x.0, and 25 computers for workers with s.m. x.x.x.128. My server has a s.m. x.x.x.128 so with workers computers I can see my server and all the computers in that s.m., but I can't see the server from the users computers and I need to see... (7 Replies)
netmasks(4) File Formats netmasks(4)NAME
netmasks - network mask database
The netmasks file contains network masks used to implement IP subnetting. It supports both standard subnetting as specified in RFC-950 and
variable length subnetting as specified in RFC-1519. When using standard subnetting there should be a single line for each network that is
subnetted in this file with the network number, any number of SPACE or TAB characters, and the network mask to use on that network. Network
numbers and masks may be specified in the conventional IP `.' (dot) notation (like IP host addresses, but with zeroes for the host part).
can be used to specify that the Class B network 188.8.131.52 should have eight bits of subnet field and eight bits of host field, in addition
to the standard sixteen bits in the network field.
When using variable length subnetting, the format is identical. However, there should be a line for each subnet with the first field being
the subnet and the second field being the netmask that applies to that subnet. The users of the database, such as ifconfig(1M), perform a
lookup to find the longest possible matching mask. It is possible to combine the RFC-950 and RFC-1519 form of subnet masks in the net-
masks file. For example,
can be used to specify different netmasks in different parts of the 184.108.40.206 Class B network number. Addresses 220.127.116.11 through
18.104.22.168 have a subnet mask with 28 bits in the combined network and subnet fields (often referred to as the subnet field) and 4 bits
in the host field. Furthermore, addresses 22.214.171.124 through 126.96.36.199 have a 26 bits in the subnet field. Finally, all other
addresses in the range 188.8.131.52 through 184.108.40.206 have a 24 bit subnet field.
Invalid entries are ignored.
SEE ALSO ifconfig(1M), inet(7P)
Postel, Jon, and Mogul, Jeff, Internet Standard Subnetting Procedure, RFC 950, Network Information Center, SRI International, Menlo Park,
Calif., August 1985.
V. Fuller, T. Li, J. Yu, K. Varadhan, Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy, RFC 1519,
Network Information Center, SRI International, Menlo Park, Calif., September 1993.
T. Pummill, B. Manning, Variable Length Subnet Table For IPv4, RFC 1878, Network Information Center, SRI International, Menlo Park, Calif.,
/etc/inet/netmasks is the official SVr4 name of the netmasks file. The symbolic link /etc/netmasks exists for BSD compatibility.
SunOS 5.10 7 Jan 1997 netmasks(4)