clucas's blog
journal, geek, OpenSource, réseaux et telecom...ven mai 11 14:43:40 CEST 2007
OSPF and Cisco :)
OSPF:
Bon ces derniers jours, j'ai joué avec OSPF.
C'est bien marrant pour éviter de se taper un paquets de routes statiques et
rendre redondant vos liens (si physiquement ils le sont ;) ).
Voici ce que cela peut donner (c'est très rapide comme amusement):
- Test1 OSPF sur Flexrouter -
=================================================
- Christophe Lucas -
$Id: test1.txt,v 1.4 2007/05/11 09:16:01 clucas Exp clucas $
1. Architecture
================
[ A ] <===========> [ B ]
2. Machines
============
2.1 Machine A
~~~~~~~~~~~~
nas-default # ip addr
1: eth0: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:40:63:ec:5a:b0 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.250/24 brd 192.168.1.255 scope global eth0
2: eth1: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:40:63:ec:5a:af brd ff:ff:ff:ff:ff:ff
inet 192.168.10.1/24 brd 192.168.10.255 scope global eth1
inet 192.168.20.1/24 brd 192.168.20.255 scope global eth1
3: lo: mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
nas-default # ip route
192.168.20.0/24 dev eth1 proto kernel scope link src 192.168.20.1
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.250
192.168.10.0/24 dev eth1 proto kernel scope link src 192.168.10.1
224.0.0.0/4 dev eth0 scope link
default via 192.168.1.1 dev eth0
nas-default # cat /usr/local/etc/zebra.conf
hostname default
password 1234
enable password 1234
!
interface eth0
ip address 192.168.1.250/24
multicast
no shutdown
!
interface eth1
ip address 192.168.10.1/24
ip address 192.168.20.1/24
no shutdown
hostname default
password 1234
enable password 1234
log file /var/log/ospfd.log
!
router ospf
network 192.168.1.0/24 area 0
network 192.168.10.0/24 area 1
network 192.168.20.0/24 area 1
!
line vty
!
User Access Verification
Password:
default> ena
Password:
default# sh ip os
default# sh ip ospf route
============ OSPF network routing table ============
N 192.168.1.0/24 [10] area: 0.0.0.0
directly attached to eth0
N 192.168.10.0/24 [10] area: 0.0.0.1
directly attached to eth1
N 192.168.20.0/24 [10] area: 0.0.0.1
directly attached to eth1
============ OSPF router routing table =============
R 192.168.32.242 [10] area: 0.0.0.0, ASBR
via 192.168.1.200, eth0
============ OSPF external routing table ===========
default# sh ip ospf bo
default# sh ip ospf border-routers
============ OSPF router routing table =============
R 192.168.32.242 [10] area: 0.0.0.0, ASBR
via 192.168.1.200, eth0
default#
default# sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
RXmtL RqstL DBsmL
192.168.32.242 1 Full/Backup 00:00:39 192.168.1.200
eth0:192.168.1.250 0 0 0
default#
2.2 Machine B
~~~~~~~~~~~
s-labo # ip addr
1: eth0: mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:40:63:e8:75:46 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.200/24 brd 192.168.1.255 scope global eth0
2: lo: mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
3: eth1: mtu 1500 qdisc pfifo_fast qlen
1000
link/ether 00:50:fc:5f:ca:3f brd ff:ff:ff:ff:ff:ff
inet 192.168.5.1/24 scope global eth1
4: gre0: mtu 1476 qdisc noop
link/gre 0.0.0.0 brd 0.0.0.0
5: infosat@NONE: mtu 1476 qdisc noqueue
link/gre 217.169.242.200 peer 217.169.242.129
inet 192.168.32.242/30 brd 192.168.32.243 scope global infosat
nas-labo # ip route
192.168.32.240/30 dev infosat proto kernel scope link src 192.168.32.242
192.168.5.0/24 dev eth1 proto kernel scope link src 192.168.5.1
192.168.20.0/24 via 192.168.1.250 dev eth0 proto zebra metric 20 equalize
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.200
192.168.10.0/24 via 192.168.1.250 dev eth0 proto zebra metric 20 equalize
default via 192.168.1.1 dev eth0
nas-labo # cat /usr/local/etc/zebra.conf
hostname labo
password 1234
enable password 1234
!
interface eth0
ip address 192.168.1.200/24
multicast
no shutdown
!
interface eth1
ip address 192.168.5.1/24
no shutdown
!
line vty
!
nas-labo # cat /usr/local/etc/ospfd.conf
hostname labo
password 1234
enable password 1234
log file /var/log/ospfd.log
!
router ospf
network 192.168.1.0/24 area 0
network 192.168.5.0/25 area 2
redistribute static
line vty
!
User Access Verification
Password:
labo> ena
Password:
labo# sh ip os
labo# sh ip ospf route
============ OSPF network routing table ============
N 192.168.1.0/24 [10] area: 0.0.0.0
directly attached to eth0
N IA 192.168.10.0/24 [20] area: 0.0.0.0
via 192.168.1.250, eth0
N IA 192.168.20.0/24 [20] area: 0.0.0.0
via 192.168.1.250, eth0
============ OSPF router routing table =============
R 192.168.20.1 [10] area: 0.0.0.0, ABR
via 192.168.1.250, eth0
============ OSPF external routing table ===========
labo# sh ip ospf ne
labo# sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
RXmtL RqstL DBsmL
192.168.20.1 1 Full/DR 00:00:40 192.168.1.250
eth0:192.168.1.200 0 0 0
labo# sh ip ospf border-routers
============ OSPF router routing table =============
R 192.168.20.1 [10] area: 0.0.0.0, ABR
via 192.168.1.250, eth0
Si vous désirez en savoir un peu plus sur OSPF, je vous recommande ces
liens:
- http://www.ospf.org/
- OSPF v2 (RFC)
- http://www.networksorcery.com/enp/protocol/ospf.htm
- http://www.gatoux.com/SECTION3/p9.php
- http://www.linux-france.org/prj/inetdoc/guides/Advanced-routing-Howto/lartc.dynamic-routing.html
Le père Noyel est passé :
Arrivée d'un nouveau joujou :
Router>sh version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-IS-M), Version 12.3(15b), RELEASE SOFTWARE
(fc1)
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Thu 25-Aug-05 19:08 by ssearch
Image text-base: 0x60008AF4, data-base: 0x61CB8000
ROM: System Bootstrap, Version 12.0(19990210:195103) [12.0XE 105],
DEVELOPMENT E
BOOTLDR: 7200 Software (C7200-KBOOT-M), Version 12.3(15b), RELEASE SOFTWARE
(fc)
Router uptime is 4 minutes
System returned to ROM by reload at 10:04:19 UTC Fri May 11 2007
System image file is "disk0:c7200-is-mz.123-15b.bin"
Last reload reason: Reload command
cisco 7204VXR (NPE300) processor (revision D) with 122880K/40960K bytes of
memo.
Processor board ID 30928714
R7000 CPU at 262MHz, Implementation 39, Rev 2.1, 256KB L2 Cache
4 slot VXR midplane, Version 2.7
Last reset from power-on
Bridging software.
X.25 software, Version 3.0.0.
PCI bus mb0_mb1 (Slots 0, 1,
3 and 5) has a capacity of 600 bandwidth
points.
Current configuration on bus mb0_mb1 has a total of 700 bandwidth points.
The set of PA-2FE, PA-POS-2OC3, and I/O-2FE qualify for "half
bandwidth points" consideration, when full bandwidth point counting
results in oversubscription, under the condition that only one of the
two ports is used. With this adjustment, current configuration on bus
mb0_mb1 has a total of 700 bandwidth points.
This configuration has oversubscripted the PCI bus and is not a
supported configuration.
PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 200 bandwidth points
This configuration is within the PCI bus capacity and is supported.
Please refer to the following document "Cisco 7200 Series Port
Adaptor Hardware Configuration Guidelines" on CCO ,
for c7200 bandwidth points oversubscription/usage guidelines.
WARNING: PCI bus mb0_mb1 Exceeds 600 bandwidth points
1 Ethernet/IEEE 802.3 interface(s)
1 FastEthernet/IEEE 802.3 interface(s)
1 Gigabit Ethernet/IEEE 802.3 interface(s)
1 ATM network interface(s)
125K bytes of non-volatile configuration memory.
46976K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102
Miam c'est beau c'est jouet! Qu'il est gentil le père Noyel
!
Vous trouverez plus d'informations ici :
=>http://www.cisco.com/en/US/products/hw/routers/ps341/products_data_sheet09186a008008872b.html
Warriors of the net : ou comment que ca marche TCP/IP
!?!:
Pour ceux qui préfèrent un dessin qu'un long discours, je vous recommande le
visionnage de cette vidéo explicitant comment marche TCP/IP.
Celle-ci provient de :
=>http://www.warriorsofthe.net/
Vous pourrez télécharger la vidéo sur leur site ou ICI
(en français) !
OpenSource: Driver libre pour le chip graphique 965GM Express
Un driver graphique du chip 965M Express d'Intel a été annoncé ce jour. Vous
pourrez retrouvé plus d'information sur : http://intellinuxgraphics.org/