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2
votes
3answers
417 views

Linux router with 4 NICs not working

I'm setting up a Linux based router, with 4 NICs, and I can't seem to convince it to work, despite following steps suggested on various web sites. Each interface is on a separate subnet as follows: ...
0
votes
3answers
343 views

Connecting Linux system to switch from 2 interfaces

To get proper redundancy, we've installed 2 switches in our network and connected them to eachother. We now want to hook our servers to both switches. Since all servers have 2 ethernet ports, this ...
12
votes
4answers
3k views

How to identify NICs that are connected to the same switch from a Linux box?

Initial Setup As a Linux administrator you have installed a fresh Linux box with 6 NICs eth0 to eth5. The eth0 interface is correctly configured and all other interfaces are currently up but without ...
4
votes
3answers
32k views

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 ...
0
votes
1answer
2k views

Multiple interface NAT routing

I have multiple internet connections from different ISPs and I need to route certain traffic over a particular ISP link. I am using Debian for this. The setup is as follows; eth0 (IP address is ...
1
vote
1answer
968 views

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 ...
1
vote
2answers
7k views

how to configure modprobe to recognize newly installed driver for eth1 on bootup?

I have a server running Debian 6. My motherboard has two interfaces, eth0 and eth1. Debian does not have a driver for eth1 (e1000e), so I installed the driver provided by Intel (e1000e-1.4.4). ...
1
vote
1answer
5k views

How do I configure multiple IPs on an Ubuntu server with two Ethernet ports?

I am trying to set up four IPs on two Ethernet ports. I figured I will assign one to each and then create aliases for the remaining two. This is what I did with my limited networking knowledge: # ...
0
votes
1answer
116 views

Keep router interfaces isolated

Have a Cisco Router 2811 with a HWIC that gives it an extra port so I have 3 Ethernet ports. Have it configured like this: FA0/0- 192.168.1.1 FA0/1- 192.168.10.1 FA1/0- 10.0.0.1 (outside) All that ...