On Tue, 2011-08-23 at 13:45 +0000, nanog@rhemasound.org wrote:
While I have found some information on a project called linux-mpls I am having a hard time finding any solid VRF framework for Linux.
The Linux kernel as shipped by Linus supports multiple routing tables and allows you to forward traffic from interfaces to differing tables -- that is, can implement VRF. The abstraction is better than on most routers, with policy routing allowing the selection of the routing table (to implement a VRF the policy is a simple "if received on interface X then use realm N"). Searching "realms" or running "man ip" will get you started. The Linus kernel does not have support for MPLS. You could patch the kernel, and then use Quagga as the router to populate the MPLS forwarding table. But personally, if you have a MPLS-speaking router upstream I'd simply bridge each MPLS tunnel into a VLAN to the Linux computer. Then you can use a stock vendor kernel, with its lack of maintenance hassles. -- Glen Turner <http://www.gdt.id.au/~gdt/>