By default the uplink traffic is going through ISP1 for both Cust A and Cust B networks. I would like to set the traffic coming from network 123.45.67.0/24 is going through ISP2. I have set the local preference to make it going to ISP2 but it seems it doesn’t work in Quagga. In Cisco it works well. To solve this issue, in Linux we can use to set source-based IP routing. Here is the step-by-step: 1.
Add a custom policy routing table in /etc/iproute2/rttables file echo '200 isp2' /etc/iproute2/rttables So the /etc/iproute2/rttables file is like below: # # reserved values # 255 local 254 main 253 default 0 unspec # # local # #1 inr.ruhep 200 isp2 2. Create an IP policy rule for all traffics coming from 123.45.67.0/24 ip rule add from 123.45.67.0/24 lookup isp2 3. Add an ip route to populate the routing table. According to the image above, the ISP2 IP address 34.56.78.1 is reachable via eth1, so we need to add route as below: ip route add default via 34.56.78.1 dev eth1 table isp2 Verify the uplink traffics from 123.45.67.0/24 using ‘traceroute’. To make it active on boot, add the ip rule and ip route above in /etc/rc.local file as below: #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will 'exit 0' on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits.
Ubuntu Install Iproute2
# # By default this script does nothing. # force customer uplink traffic via ISP2 /sbin/ip rule add from 123.45.67.0/24 lookup isp2 /sbin/ip route add default via 34.56.78.1 dev eth1 table isp2 exit 0 Hopefully this post helps you understanding on how to configure source-based IP routing in Linux.
Scray2 - How to setup L2TP VPN macOS Sierra I set my L2TP-VPN up and it worked fine for about 2 months until today. It told me that my vpn password was expired and told me to enter a new one. I entered a new one but when I tried to sign in with it, I am told that authentication failed. I tried entering the old one back in there and still getting the same message about authentication failing. Can someone please tell me what is going on here and why the password would have expired in the first place? Also does anyone know how to reset the vpn password?
Introduction It is essential to have an understanding of basic networking tools when administering and troubleshooting Linux servers. While some tools are made primarily for monitoring, other low-level utilities are used to configure the network connection itself and implement default settings. Traditionally, a group of unrelated tools lumped together under the title of net-tools was used to do this.
They were often packaged together to provide full functionality coverage, but their development and usage strategy varied from tool to tool. Because of inconsistencies, as well as halted maintenance, a collection of tools known under the umbrella moniker iproute2 has been used to replace these separate tools.
They have been developed in tandem to share syntax and operate together efficiently. In this guide, we will discuss how to use the iproute2 tools to configure, manipulate, and gather information about your network. We will be using an Ubuntu 12.04 VPS to demonstrate, but most modern Linux distributions should provide the same level of functionality. Jackson guitar serial numbers. While the querying commands can usually be executed as an unprivileged user, root privileges must be used to modify settings. How To View Network Interfaces, Addresses, and Routes One of the most fundamental responsibilities of the iproute2 suite is to manage actual interfaces. Usually, the interfaces themselves will be named things like eth0, eth1, lo, etc. Traditionally, the ifconfig command was used to configure items in this area.
Under the iproute2 system, the subcommands ip addr and ip link take care of these steps.