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Quagga Etude 2 - OSPF Simple
Dernière modif: Dec 06 2007

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Tool
Installation
Ergonomie
Forum


Détails Quagga, c'est quoi?
Prérequis & Installation
Comment utiliser Quagga
Comparaison des fonctionnalités de routeurs
Étude de cas 1 - routes statiques
Étude de cas 2 - OSPF simple
Étude de cas 3 - OSPF avancé
Étude de cas 4 - BGP

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1. PRINCIPE

2. SCHÉMA

3. CONFIGURATIONS

4. COMMANDES SHOW

Voir un scénario similaire avec le routeur Vyatta.

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1. PRINCIPE

Dans cette deuxième étude, nous allons voir un exemple où deux postes de travail sont reliés entre eux par l'intermédiaire de deux routeurs, un routeur Cisco 2651 et un routeur Vyatta.
Les routeurs utilisent le protocole de routage dynamique OSPF pour annoncer les réseaux IP.

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2. SCHÉMA

Fonctionnalités testées: (cliquez sur les liens internet pour avoir plus de détails sur un protocole) Paramétrage interfaces OSPF - backbone area Accès Telnet

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3. CONFIGURATIONS

Vous devez configurer votre système Linux correctement pour pouvoir lancer Quagga avec succès. Référez-vous au tutorial Quagga pour de l'assistance.

LINUX CONFIGURATIONS

Vérifiez que les démons ospfd et zebra sont activés:

#vim /etc/quagga/daemons

zebra=yes
bgpd=no
ospfd=yes
ospf6d=no
ripd=no
ripngd=no
isisd=no

Si vous avez effectués des changements dans votre fichiers daemon, redémarrez le service quagga:

#/etc/init.d/quagga restart

Stopping Quagga daemons (prio:0): ospfd zebra (bgpd) (ripd) (ripngd) (ospf6= d) (isisd).
Removing all routes made by zebra.
Nothing to flush.
Loading capability module if not yet done.
Starting Quagga daemons (prio:10): zebra ospfd.

Configurez le nom d'hôte (hostname) de Quagga dans le fichier /etc/quagga/vtysh.conf:

#vim /etc/quagga/vtysh.conf

!
! Sample
!
! service integrated-vtysh-config
hostname quagga-router
username root nopassword
!

N'oubliez pas d'activer la redirection IP (IP forwarding) sur le routeur Quagga!

CONFIGURATIONS DES ROUTEURS

ROUTEUR CISCO IOS: 122-23a	ROUTEUR QUAGGA 0.99.6
interface FastEthernet0/0   description link to Vyatta router   ip address 200.0.0.2 255.255.255.0	interface eth0   description link to Cisco router   ip address 200.0.0.1/24   link-detect
interface FastEthernet0/1   description link to Desktop A   ip address 10.1.0.2 255.255.255.0	interface eth1   description link to Desktop B   ip address 10.2.0.1/24   link-detect
interface Loopback1   ip address 10.200.1.1 255.255.255.255	interface lo   ip address 10.200.1.2/32   link-detect
router ospf 1   network 10.1.0.0 0.0.0.255 area 0   network 10.200.1.1 0.0.0.0 area 0   network 200.0.0.0 0.0.0.255 area 0	router ospf   network 10.2.0.0/24 area 0   network 10.200.1.2/32 area 0   network 200.0.0.0/24 area 0
hostname cisco	hostname quagga-router
line vty 0 4   no login	line vty   no login
enable secret password	enable password password

Poste de travail A		Poste de travail B
ip address: subnet mask: gateway:	10.1.0.3 255.255.255.0 10.1.0.2 Capture d'écran	ip address: subnet mask: gateway:	10.2.0.3 255.255.255.0 10.2.0.2 Capture d'écran

VOIR LA CONFIGURATION COMPLÈTE DES ÉQUIPEMENTS:

Routeur 2651 Cisco
Routeur Quagga

Vous pouvez utiliser un Switch Cisco L3 à la place du routeur Cisco 2651:
Switch L3 Cisco 3750

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4. COMMANDES SHOW

TABLE DE ROUTAGE

quagga-router#show ip route

Codes:		K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
		I - ISIS, B - BGP, > - selected route, * - FIB route
C>*	200.0.0.0/24 is directly connected, eth0
C>*	10.2.0.0/24 is directly connected, eth1
C>*	127.0.0.0/8 is directly connected, lo
C>*	10.200.1.2/32 is directly connected, lo
O	10.2.0.0/24 [110/10] is directly connected, eth0, 05:45:59
O	200.0.0.0/24 [110/10] is directly connected, eth0, 05:53:20
O	10.200.1.2/32 [110/10] is directly connected, lo, 05:43:00
O>*	10.1.0.0/24 [110/11] via 200.0.0.2, eth0, 00:16:27
O>*	10.200.1.1/32 [110/11] via 200.0.0.2, eth0, 05:53:10

quagga-router (Linux level)#route -n

Destination	Gateway	Genmask	Flags	Metric	Ref	Use	Iface
10.200.1.1	200.0.0.2	255.255.255.255	UGH	11	0	0	eth0
10.2.0.0	0.0.0.0	255.255.255.0	U	0	0	0	eth1
10.1.0.0	200.0.0.2	255.255.255.0	UG	11	0	0	eth0
200.0.0.0	0.0.0.0	255.255.255.0	U	0	0	0	eth0

cisco#show ip route

Codes:		C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
		D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
		N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
		E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
		i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
		ia - IS-IS inter area, * - candidate default, U - per-user static route
		o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
C	200.0.0.0/24 is directly connected, FastEthernet0/0
	10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O		10.2.0.0/24 [110/11] via 200.0.0.1, 00:29:39, FastEthernet0/0
C		10.1.0.0/24 is directly connected, FastEthernet0/1
O		10.200.1.2/32 [110/11] via 200.0.0.1, 00:29:39, FastEthernet0/0
C		10.200.1.1/32 is directly connected, Loopback1

VOISINS OSPF (OPSF NEIGHBORS)

quagga-routershow ip opsf neighbor

Neighbor ID	Pri	State	Dead Time	Address	Interface	RXmtL	RqstL	DBsmL
10.200.1.1	1	Full/DR	36.591s	200.0.0.2	eth0:200.0.0.1	0	0	0

cisco#show ip ospf neighbor

Neighbor ID	Pri	State	Dead Time	Address	Interface
200.0.0.1	1	FULL/BDR	00:00:38	200.0.0.1	FastEthernet0/0

BASE DE DONNÉES OSPF (OSPF DATABASE)

quagga-router#show ip ospf database

	OSPF Router with ID (10.200.1.1) (Process ID 1)
		Router Link States (Area 0)
Link ID		ADV Router	Age	Seq#	Checksum	Link count
10.200.1.1		10.200.1.1	1821	0x80000017	0x009B40	3
200.0.0.1		200.0.0.1	1615	0x80000010	0x00B349	3
		Net Link States (Area 0)
Link ID		ADV Router	Age	Seq#	Checksum
200.0.0.2		10.200.1.1	48	0x8000000C	0x00E30D

quagga-router#show ip ospf database

	OSPF Router with ID (10.200.1.2)
		Router Link States (Area 0.0.0.0)
Link ID		ADV Router	Age	Seq#	CkSum	Link count
10.200.1.1		10.200.1.1	1328	0x80000006	0xbd2f	3
10.200.1.2		10.200.1.2	1119	0x80000007	0x9756	3
		Net Link States (Area 0.0.0.0)
Link ID		ADV Router	Age	Seq#	CkSum	Link count
200.0.0.2		10.200.1.1	1549	0x80000004	0x46a6

cisco#show ip ospf route

============ OSPF network routing table ============
N	10.1.0.0/24	[11] area: 0.0.0.0
		via 200.0.0.2, eth0
N	10.2.0.0/24	[10] area: 0.0.0.0
		directly attached to eth0
N	10.200.1.1/32	[11] area: 0.0.0.0
		via 200.0.0.2, eth0
N	10.200.1.2/32	[10] area: 0.0.0.0
		directly attached to lo
N	200.0.0.0/24	[10] area: 0.0.0.0
		directly attached to eth0
============ OSPF router routing table =============
============ OSPF external routing table ===========

STATISTIQUES OSPF

quagga-router#show ip ospf interface

eth0 is up    ifindex 2, MTU 1500 bytes, BW 0 Kbit    Internet Address 200.0.0.1/24, Broadcast 200.0.0.255, Area 0.0.0.0    MTU mismatch detection:enabled    Router ID 10.200.1.2, Network Type BROADCAST, Cost: 10    Transmit Delay is 1 sec, State Backup, Priority 1    Designated Router (ID) 10.200.1.1, Interface Address 200.0.0.2    Backup Designated Router (ID) 10.200.1.2, Interface Address 200.0.0.1    Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters    Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5       Hello due in 9.469s    Neighbor Count is 1, Adjacent neighbor count is 1 eth1 is up    ifindex 3, MTU 1500 bytes, BW 0 Kbit    Internet Address 10.2.0.2/24, Broadcast 10.2.0.255, Area 0.0.0.0    MTU mismatch detection:enabled    Router ID 10.200.1.2, Network Type BROADCAST, Cost: 10    Transmit Delay is 1 sec, State DR, Priority 1    Designated Router (ID) 10.200.1.2, Interface Address 10.2.0.2    No backup designated router on this network    Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters    Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5       Hello due in 0.051s    Neighbor Count is 0, Adjacent neighbor count is 0 lo is up    ifindex 1, MTU 16436 bytes, BW 0 Kbit    Internet Address 10.200.1.2/32, Area 0.0.0.0    MTU mismatch detection:enabled    Router ID 10.200.1.2, Network Type LOOPBACK, Cost: 10    Transmit Delay is 1 sec, State Loopback, Priority 1    No designated router on this network    No backup designated router on this network    Multicast group memberships:    Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5       Hello due in inactive    Neighbor Count is 0, Adjacent neighbor count is 0

cisco#show ip ospf brief

FastEthernet0/0 is up, line protocol is up    Internet Address 200.0.0.2/24, Area 0    Process ID 1, Router ID 10.200.1.1, Network Type BROADCAST, Cost: 1    Transmit Delay is 1 sec, State DR, Priority 1    Designated Router (ID) 10.200.1.1, Interface address 200.0.0.2    Backup Designated router (ID) 200.0.0.1, Interface address 200.0.0.1    Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5       Hello due in 00:00:05    Index 3/3, flood queue length 0    Next 0x0(0)/0x0(0)    Last flood scan length is 1, maximum is 2    Last flood scan time is 0 msec, maximum is 0 msec    Neighbor Count is 1, Adjacent neighbor count is 1       Adjacent with neighbor 200.0.0.1 (Backup Designated Router)    Suppress hello for 0 neighbor(s) Loopback1 is up, line protocol is up    Internet Address 10.200.1.1/32, Area 0    Process ID 1, Router ID 10.200.1.1, Network Type LOOPBACK, Cost: 1    Loopback interface is treated as a stub Host FastEthernet0/1 is up, line protocol is up    Internet Address 10.1.0.2/24, Area 0    Process ID 1, Router ID 10.200.1.1, Network Type BROADCAST, Cost: 1    Transmit Delay is 1 sec, State DR, Priority 1    Designated Router (ID) 10.200.1.1, Interface address 10.1.0.2    No backup designated router on this network    Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5       Hello due in 00:00:05    Index 1/1, flood queue length 0    Next 0x0(0)/0x0(0)    Last flood scan length is 0, maximum is 0    Last flood scan time is 0 msec, maximum is 0 msec    Neighbor Count is 0, Adjacent neighbor count is 0    Suppress hello for 0 neighbor(s)

STATISTIQUES DES INTERFACES (COURT)

quagga-router#show interface description

Interface	Status	Protocol	Description
eth0	up	up	link to Cisco router
eth1	up	up	link to Desktop B
lo	up	up

cisco#show ip int brief

Interface	Interface IP-Address	OK?	Method	Status	Protocol
FastEthernet0/0	200.0.0.2	YES	NVRAM	up	up
FastEthernet0/1	10.1.0.2	YES	NVRAM	up	up
Loopback1	10.200.1.1	YES	NVRAM	up	up

STATISTIQUES DES INTERFACES (COMPLET)

quagga-router#show interface eth0

Interface eth0 is up, line protocol detection is disabled    Description: link to Cisco router    index 2 metric 1 mtu 1500    flags:    HWaddr: 00:02:55:33:22:11    inet 200.0.0.1/24 broadcast 200.0.0.255    inet6 fe80::202:55ff:4433:2211/64       10477 input packets (0 multicast), 8758628 bytes, 0 dropped       0 input errors, 0 length, 0 overrun, 0 CRC, 0 frame       0 fifo, 0 missed       7848 output packets, 608483 bytes, 0 dropped       0 output errors, 0 aborted, 0 carrier, 0 fifo, 0 heartbeat       0 window, 0 collisions

cisco#show interfaces FastEthernet 0/0

FastEthernet0/0 is up, line protocol is up    Hardware is AmdFE, address is 0009.1122.3344 (bia 0009.1122.3344)    Description: link to Quagga router    Internet address is 200.0.0.2/24    MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,       reliability 255/255, txload 1/255, rxload 1/255    Encapsulation ARPA, loopback not set    Keepalive set (10 sec)    Full-duplex, 100Mb/s, 100BaseTX/FX    ARP type: ARPA, ARP Timeout 04:00:00    Last input 00:00:00, output 00:00:01, output hang never    Last clearing of "show interface" counters never    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0    Queueing strategy: fifo    Output queue: 0/40 (size/max)    5 minute input rate 0 bits/sec, 0 packets/sec    5 minute output rate 0 bits/sec, 0 packets/sec       1847 packets input, 154310 bytes       Received 1637 broadcasts, 0 runts, 0 giants, 0 throttles       0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored       0 watchdog       0 input packets with dribble condition detected       3755 packets output, 337765 bytes, 0 underruns       0 output errors, 0 collisions, 5 interface resets       0 babbles, 0 late collision, 0 deferred       0 lost carrier, 0 no carrier       0 output buffer failures, 0 output buffers swapped out

VÉRIFICATION DE LA CONNECTIVITE DE BOUT EN BOUT:

Depuis le poste de travail A
C:\>tracert 10.2.0.3


Depuis le poste de travail B
C:\>tracert 10.1.0.3


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