readme.quagga-mpls.txt

实现了MPLS中的标签分发协议（LDP 3036 )的基本功能

What is this?
-------------
quagga-mpls.diff is a quagga<->ldp-portable porting layer.

What is "quagga"?
----------------
Quagga is a set of open source routing daemons which implement the
common routing protocols (RIP, OSPF, BGP).  Each protocol runs as a seperate
dameon, and they are all syncronized via a managment daemon (zebra).  If you
have never used quagga, go to http://quagga.net/ download the source for
0.96.4, compile it and learn how to setup up a small OSPF network using
quagga.  Once you have that running then you are ready try and use this patch.

What does this patch include?
-----------------------------
It includes a 'router-id' implementation so that each protocol chooses the same
address as it's router-id. (very important for implementing more
advanced MPLS services)

In includes a 'sum-of-checksums' implementation for OSPF so you can easily
verify that all of your OSPF speakers in an area have the same version of the
database (their sum-of-checksums will match).

It handles MPLS labels as part of the quagga nexthop and correct
handling of MPLS labels as part of a recursive nexthop.

It implements a CLI for creating static LSPs (in the zebra daemon).

It implements a porting layer for the ldp-portable library so that LDP
interact seemlessly with the rest of the quagga routing software (in the ldpd
daemon).

How do I use this patch?
-----------------------
Apply quagga-mpls.diff to the quagga source distribution. (0.96.4)
Go into the quagga/ldpd directory and modify 'create-links' to point to
your ldp-portable source distribution.  Then execute 'create-links' .
Go back to the top of the quagga source tree and configure and compile
quagga according to it's directions.  If you are not running on a mpls-linux
enabled kernel, modify quagga/zebra/Makefile.am and change mpls-linux.o to
mpls_null.o.  If you have issues compiling and you are running a
mpls-linux-1.1x kernel most likely it can't find your
linux/include/linux/mpls.h file.   Go read the file 'README.1st.really'
in the mpls-linux-1.1 distrubution.

After you have finished compling, you will have a ldpd binary that has
the same command line syntax as the rest of the quagga binaries.

'ldpd' supports LDP, zebra supports staic LSPs.

(if you are not familiar with quagga hit the '?' key and it will provide
you context sensitive help.  Also look at 'mpls' at the interface level.
There are also 'show' commands availble from the operations more.  Look at
'show ldp ?' and 'show mpls ?' for a list of commands.)

The environment I use is:

zebra -f /etc/zebra.conf -P 1024 -d
ospdd -f /etc/ospfd.conf -P 1025 -d
ldpd -f /etc/ldpd.conf -P 1026

NOTE: 'ldpd' still has a lot of tracing messages which only go to standard
output.  If you use the -d option on 'ldpd' you will loose this useful
debugging output.

Look at quagga/ldpd/ldpd.conf.sample or the sample configs I have included
below, for a basic configuration example.

I have done most of my testing with unsolicited mode, liberal retention, label
merging, ordered control.  If you have success or failures with other modes
let me know.

Please post questions to the mpls-linux mailing list:

http://sourceforge.net/mail/?group_id=15443

Here is a version of each of the quagga related config files that I use
for testing.

NOTE:  The usage of the dummy interface with a /32 address is important!

--------------------------- zebra config ------------------------------
hostname uml-2
password root
enable password root
service advanced-vty
!
mpls labelspace 0
 label-map gen 16 pop
 label-map gen 17 swap gen 18 nexthop eth2 11.0.2.3
!
interface lo
 description Loopback 
!
interface dummy0
 ip address 192.168.0.2/32
!
interface eth0
!
interface eth1
 mpls labelspace 0
 ip address 11.0.1.2/24
!
interface eth2
 mpls labelspace 0
 ip address 11.0.2.2/24
!
interface eth3
 mpls labelspace 0
 ip address 11.0.3.2/24
!
interface teql0
!
ip route 10.0.0.0/8 gen 19 nexthop eth2 11.0.2.3
!
line vty
 exec-timeout 0 0

--------------------------- ospfd config ------------------------------

hostname uml-2-ospf
password root
enable password root
!
!
!
interface lo
!
interface teql0
!
interface eth0
!
interface eth1
!
interface eth2
!
interface eth3
!
interface dummy0
!
router ospf
 passive-interface lo
 network 11.0.0.0/8 area 0
 network 192.168.0.2/32 area 0
!
line vty
 exec-timeout 0 0

--------------------------- mplsd config ------------------------------

hostname uml-2-mpls
password root
enable password root
!
mpls ip
!
interface lo
!
interface eth0
!
interface eth1
 mpls ip
!
interface eth2
 mpls ip
!
interface eth3
 mpls ip
!
interface dummy0
!
line vty
 exec-timeout 0 0