![linux router configuration linux router configuration](https://linuxconfig.org/wp-content/uploads/2015/07/01-how-to-turn-on-off-ip-forwarding-in-linux.png)
- #Linux router configuration how to
- #Linux router configuration manual
- #Linux router configuration Patch
All solid lines are Ethernet connections.But with an MPLS core network, we can easily satisfy both customers. If we use the traditional IP core network, we will be at least losing one customer. One day 2 customers (the “customer1” and the “customer2”) purchased our transit service but their LAN IP address ranges are the same. Say we are a regional small ISP and provide a service to connect customer sites located in 2 cities. Here’s a classic topology to demonstrate MPLS’s capability to provide transit to customers with overlapping IP addresses.
#Linux router configuration how to
Here I’m going to demonstrate how to configure all the steps under Linux using a minimal lab environment.
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Ethernet), or a non-layer-2 tunnel that explicitly supports MPLS (via RFC2547bis, for example, GRE or L2TP). For MPLS to work, all your core routers need to be connected via either a layer 2 link (e.g. MPLS is a “layer 2.5” protocol, which means it runs on a layer 2 link.
#Linux router configuration manual
![linux router configuration linux router configuration](https://www.tecmint.com/wp-content/uploads/2015/01/Check-Linux-Route-Table.png)
Eliminate the need for core routers to store and process all the routes from customers, greatly lowering memory requirements for the core routers.Relieve core routers from IP route lookup they only need to do MPLS label swapping, so better performance can be achieved.Allow different customers to use overlapped IP address ranges.Use one set of routers to provide different kinds of service to different customers.MPLS (元VPN) is like VLAN trunking but for layer 3: you put an interface of a router into a VRF instance (like a VLAN) every router can have multiple routing tables, one for every VRF (like ARP tables for VLANs) when core routers routing packets, these packets will be prefixed by MPLS labels (like VLAN tags) so different packets from different routing tables do not interfere. Those IP routing guys without the experience of large-scale carrier network may be unfamiliar with the MPLS technology. This article is a write-up for my lab setup. Recently, after digging into all kinds of codes and documentation, I had a standard MPLS core network up and running in my lab. 3 years later, a thorough documentation of MPLS configuration on Linux is still largely missing. Linux finally got native, working MPLS (元VPN) and VRF support. Cumulus contributed its VRF implementation to mainline Linux.
#Linux router configuration Patch