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Questions tagged [interface]

333 questions
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CentOS 6.5 not bringing up network interface automatically after reboot [ifup eth0]

I am having this issue with many of my CentOS servers where after a reboot the network interface fails to come up automatically. This is a big problem for me since I need to drive to the datacenter every time when this happens as a result from a…
Rudolph
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Junos: find out each interface's ip

Sorry if my explanation is confusing. I need to get all the ip addresses of a Juniper Switch and Router (different models). On Cisco IOS I can get that with show ip interface brief | exclude unassigned: cisco_device>show ip interface brief |…
Megaslav
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Set source address to use tun device does not work (Debian Squeeze)

There have been similar questions on StackExchange but none of the answers helped me, so I'll try a question of my own. I have a VPN connection via OpenVPN. By default, all traffic is redirected through the tunnel using OpenVPN's "two more specific…
A. Donda
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rpcbind - is there really no way to make the tcp ports bind to a specific interface / can nfs be ran without rpcbind?

We would like to move away from sshfs to nfs. The last thing holding us back is the fact that rpcbind (which I assume is required for nfs to work) does not allow you to specify the TCP (not UDP) IP that it binds to. There is the -h flag, but this is…
anonymous-one
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What is the Microsoft Loopback Adapter used for?

Why is Microsoft Loopback interface called _loopback_ inteface? RFC3330 states that a loopback interface is an interface with an IP address in the 127.0.0.0/8 address range. Yet, when I enter the 127.x.x.x address in Microsoft Loopback TCP/IP…
colemik
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How do I route between interfaces in PFsense?

I have a PFsense router which divides a single WAN connection into three NAT networks on three interfaces: LAN, OPT1 and OPT2. This allows me to segregate my network so that computers on the OPT1 and OPT2 networks can't reach servers on the LAN…
Josh
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What is a Cisco BVI interface? What is it used for?

I have been Google'd and searched for the answer to these questions, but I cannot find a simple answer. So my questions are about BVI interfaces. What are they? Why do you use them? In what scenario are they useful? I've searched through CCNA books,…
Inf.S
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Round robin through multiple interfaces

I'd like to alternative between networking interfaces to a particular ip. For example: Request to 192.168.1.5 // uses interface 1 Request to 192.168.1.5 // uses interface 2 Request to 192.168.1.5 // uses interface 1 Request to 192.168.1.5 // uses…
Keith Pitt
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Traceroute time is too long

I m using RHEL 6.5 and eth0 interaface Interface Ip is 100.x.x.x and when i traceroute to 100.x.x.x it showing one hop that too ip address of interface itself. For eg traceroute to 100.65.111.14 from 100.66.28.75 gives 100.66.28.75 3000ms 3214ms…
bgv
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Debian - static ip, /etc/network/interfaces

I tried to set a static IP on my Debian 8.1 (in VirtualBox), so I edited the /etc/network/interface file : # The loopback network interface auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.1.51 netmask…
kolm3
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Fedora 21: Firewalld (firewall-cmd) won't PERMANENTLY assign interfaces to zones?

I installed Fedora on this one machine which is EXCLUSIVELY a gateway / firewall system. Following installation, I ran 'yum upgrade', and so it should be up to the very latest Fedora 21 - I'm a little behind on purpose (not Fedora 22) specifically…
Richard T
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How to disable NIC transmitter or receiver in Linux

Is it possible to disable either the tx or the rx in a NIC? I am setting up a network monitoring machine and I would like to be sure that no packet will be introduced by this machine at the network. One approach would be use some sort of netfilter…
Vinicius Tinti
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Does the network need to be restarted after editing /etc/network/interfaces?

On Debian - Say I have a network card eth0 on my /etc/network/interfaces file, and I want to add a new interface to it (that uses dhcp). Is it necessary to restart the networking service (/usr/sbin/service networking) when I do this in order to…
smcg
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Strange ifup/ifdown behaviour on Debian Lenny

First of all, here is my /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.10.4.142 netmask 255.255.255.0 gateway 10.10.4.1 auto eth1 iface eth1 inet static address 10.10.4.138 netmask…
ohe
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Alternative to /etc/network/interfaces on Ubuntu 18.04

In ubuntu 18.04, I found that there is one more requirement for the /etc/network/interfaces configuration to work. I got information that I could fix it by adding the ifupdown setting to the /etc/NetworkManager/NetworkManager.conf file, but it did…
user115930
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