Quagga Case 3 - OPSF Adv

http://openmaniak.com/quagga_case3.php

1. CASE PRINCIPLE

We will test in this third example a medium difficulty level environment where two routers (Cisco 3750 & Quagga B) are linked together with two OPSF areas, one OSPF area is tagged as stub area.

The Quagga B router and the Cisco 2651 are located in a stub area. They have OPSF intra(O) and inter-area routes (OIA) in their routing tables but no external OSPF route. To route these external OPSF networks like 10.200.1.1 (see next paragraph), there is a default OSPF route to the border router (Quagga A router) on the routers inside area 1.
Quagga A is a border router because it is in area 0 or backbone area and in area 1.

For the purpose of our case study, the 10.200.1.1 static route is redistributed into OSPF on the Quagga A router to "artificially" create an external OPSF network tagged as OE2. Because of the stub area, this network should not be propagated on the Quagga B router and the Cisco 2651.

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2. PICTURE

Functionalities tested: (click on the web links to have more details about a protocol) Interface settings OSPF - backbone area OSPF - multi area OSPF - stub area Static routing Redistribution - static to OSPF Telnet access

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3. CONFIGURATIONS

You must set your Linux system correctly to launch Quagga successfully. See the Quagga tutorial for help about this.

LINUX CONFIGURATIONS

Check that the zebra and ospfd daemons are activated:

#vim /etc/quagga/daemons

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

If you changed your daemons file, restart the quagga service:

#vim /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.

Set the Quagga A hostname in the /etc/quagga/vtysh.conf file:

#vim /etc/quagga/vtysh.conf

!
! Sample
!
! service integrated-vtysh-config
hostname Quagga_A
username root nopassword
!

Set the Quagga B hostname in the /etc/quagga/vtysh.conf file:

#vim /etc/quagga/vtysh.conf

!
! Sample
!
! service integrated-vtysh-config
hostname Quagga_B
username root nopassword
!

Don't forget to activate the ip forwarding on the Quagga A router!
It is not necessary to activate ip forwarding on the Quagga B router because it has only one network interface.

ROUTERS CONFIGURATIONS

CISCO ROUTER 2651 IOS: 12.2-23a	QUAGGA ROUTER A 0.99.6
interface FastEthernet0/1   ip address 10.1.3.2 255.255.255.0   no shutdown	interface eth0   ip address 10.1.3.1/24   link-detect
interface FastEthernet0/0   ip address 10.1.4.2 255.255.255.0   no shutdown	interface eth1   ip address 10.1.1.1/24   link-detect
interface Loopback 1   ip address 10.200.1.3 255.255.255.255	interface lo   ip address 10.200.1.2/32   link-detect
hostname Cisco-2651
	ip route 10.200.1.1/32 10.1.1.2
router ospf 1   area 1 stub   network 10.1.3.0 0.0.0.255 area 1   network 10.1.4.0 0.0.0.255 area 1   network 10.200.1.3 0.0.0.0 area 1	router ospf   area 1 stub   network 10.1.3.0/24 area 1   network 10.1.1.0/24 area 0   network 10.200.1.2/32 area 0
line vty 0 4   no login	line vty   no login
enable secret password	enable password password
CISCO SWITCH L3 3750 IOS: 12.2-25.SEE2	QUAGGA ROUTER B 0.99.6
interface vlan 1   ip address 10.1.1.2 255.255.255.0   no shutdown	interface eth0   ip address 10.1.4.1/24   link-detect
interface Loopback 1   ip address 10.200.1.1 255.255.255.255	interface lo   ip address 10.200.1.4/32   link-detect
hostname 3750_L3
router ospf 1     network 10.1.1.0 0.0.0.255 area 0	router ospf   area 1 stub   network 10.1.4.0/24 area 1   network 10.200.1.4/32 area 1
line vty 0 4   no login	line vty 0 4   no login
enable secret password	enable password password
ip routing ip multicast-routing distributed

SEE THE ENTIRE CONFIGURATION OF THE DEVICES:

Quagga A
Quagga B
Cisco 2651
Cisco 3750 L3

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4. SHOW COMMANDS

CISCO 3750 L3

QUAGGA A ROUTER

CISCO 2651

QUAGGA B ROUTER

CISCO 3750 LAYER 3

3750_L3##show interface vlan 1

Vlan1 is up, line protocol is up
	Hardware is EtherSVI, address is 0011.2233.4444 (bia 0011.2233.4444)
	Internet address is 10.1.1.2/24
	MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
		reliability 255/255, txload 1/255, rxload 1/255
	Encapsulation ARPA, loopback not set ARP type: ARPA, ARP Timeout 04:00:00
	Last input 00:00:00, output 00:00:00, 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
		2120 packets input, 159981 bytes, 0 no buffer
		Received 0 broadcasts (57 IP multicast)
		0 runts, 0 giants, 0 throttles
		0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
		1425 packets output, 139335 bytes, 0 underruns
		0 output errors, 0 interface resets
		0 output buffer failures, 0 output buffers swapped out

3750_L3#show ip route

Codes:		C - connected, S - static, 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
	10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks
C		10.200.1.1/32 is directly connected, Loopback1
C		10.1.1.0/24 is directly connected, Vlan1
O		10.200.1.2/32 [110/11] via 10.1.1.1, 01:40:19, Vlan1
O IA		10.1.3.0/24 [110/11] via 10.1.1.1, 01:40:19, Vlan1
O IA		10.1.4.0/24 [110/12] via 10.1.1.1, 01:40:19, Vlan1
O IA		10.200.1.3/32 [110/12] via 10.1.1.1, 01:40:19, Vlan1
O IA		10.200.1.4/32 [110/22] via 10.1.1.1, 01:40:19, Vlan1

3750_L3#show ip ospf interface

Vlan1 is up, line protocol is up
	Internet Address 10.1.1.2/24, Area 0
	Process ID 1, Router ID 10.200.1.1, Network Type BROADCAST, Cost: 1
	Transmit Delay is 1 sec, State BDR, Priority 1
	Designated Router (ID) 10.200.1.2, Interface address 10.1.1.1
	Backup Designated router (ID) 10.200.1.1, Interface address 10.1.1.2
	Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
		oob-resync timeout 40
		Hello due in 00:00:07
	Supports Link-local Signaling (LLS)
	Index 1/1, flood queue length 0
	Next 0x0(0)/0x0(0)
	Last flood scan length is 1, maximum is 1
	Last flood scan time is 0 msec, maximum is 0 msec
	Neighbor Count is 1, Adjacent neighbor count is 1
		Adjacent with neighbor 10.200.1.2 (Designated Router)
	Suppress hello for 0 neighbor(s)

3750_L3#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	117	0x8000001D	0x000A48	1
10.200.1.2		10.200.1.2	731	0x8000001D	0x000A48	2
		Net Link States (Area 0)
Link ID		ADV Router	Age	Seq#	Checksum
10.1.1.1		10.200.1.2	731	0x80000004	0x00C009
		Summary Net Link States (Area 0)
Link ID		ADV Router	Age	Seq#	Checksum
10.1.3.0		10.200.1.2	1543	0x80000008	0x005E0A
10.1.4.0		10.200.1.2	743	0x80000009	0x005B0A
10.200.1.3		10.200.1.2	623	0x80000009	0x00019C
10.200.1.4		10.200.1.2	923	0x8000000A	0x005938
		Type-5 AS External Link States
Link ID		ADV Router	Age	Seq#	Checksum	Tag
10.200.1.1		10.200.1.2	773	0x8000000	0x008A73	0

3750_L3#show ip ospf neighbor

Neighbor ID	Pri	State	Dead Time	Address	Interface
10.200.1.2	1	FULL/DR	00:00:34	10.1.1.1	Vlan1

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QUAGGA A ROUTER

Quagga_A#show interface description

Interface	Status	Protocol	Description
eth0	up	up
eth1	up	up
lo	up	up

Quagga_A#show interface eth0

Interface eth0 is up, line protocol is up
	index 2 metric 1 mtu 1500
	flags: <UP,BROADCAST,RUNNING,MULTICAST>
	HWaddr: 00:02:11:22:33:99
	inet 10.1.3.1/24 broadcast 10.1.3.255
	inet6 fe80::201:66ff:1122:3399/64
		2598 input packets (0 multicast), 213456 bytes, 0 dropped
		0 input errors, 0 length, 0 overrun, 0 CRC, 0 frame
		0 fifo, 0 missed
		2491 output packets, 229815 bytes, 0 dropped
		0 output errors, 0 aborted, 0 carrier, 0 fifo, 0 heartbeat
		0 window, 0 collisions

Quagga_A (Linux level)#route -n

Kernel IP routing table
Destination	Gateway	Genmask	Indic	Metric	Ref	Use	Iface
10.200.1.1	10.1.1.2	255.255.255.255	UGH	0	0	0	eth1
10.200.1.3	10.1.3.2	255.255.255.255	UGH	11	0	0	eth0
10.200.1.4	10.1.3.2	255.255.255.255	UGH	21	0	0	eth0
10.1.4.0	10.1.3.2	255.255.255.0	UG	11	0	0	eth0
10.1.1.0	0.0.0.0	255.255.255.0	U	0	0	0	eth1
10.1.3.0	0.0.0.0	255.255.255.0	U	0	0	0	eth0

Quagga_A#show ip route

Codes:		K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
		I - ISIS, B - BGP, > - selected route, * - FIB route
C>*	127.0.0.0/8 is directly connected, lo
C>*	10.200.1.2/32 is directly connected, lo
C>*	10.1.3.0/24 is directly connected, eth0
C>*	10.1.1.0/24 is directly connected, eth1
S>*	10.200.1.1/32 [1/0] via 10.1.1.2, eth1
O	10.1.1.0/24 [110/10] is directly connected, eth1, 03:30:30
O	10.1.3.0/24 [110/10] is directly connected, eth0, 03:30:39
O	10.200.1.2/32 [110/10] is directly connected, lo, 03:30:39
O>*	10.1.4.0/24 [110/11] via 10.1.3.2, eth0, 03:30:29
O>*	10.200.1.3/32 [110/11] via 10.1.3.2, eth0, 03:30:29
O>*	10.200.1.4/32 [110/21] via 10.1.3.2, eth0, 03:30:29

Quagga_A#show ip ospf interface

eth0 is up
	ifindex 2, MTU 1500 bytes, BW 0 Kbit <UP,BROADCAST,RUNNING,MULTICAST>
	Internet Address 10.1.3.1/24, Broadcast 10.1.3.255, Area 0.0.0.1 [Stub]
	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) 10.1.4.2, Interface Address 10.1.3.2
	Backup Designated Router (ID) 10.200.1.2, Interface Address 10.1.3.1
	Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
	Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
		Hello due in 6.220s
	Neighbor Count is 1, Adjacent neighbor count is 1
eth1 is up
	ifindex 3, MTU 1500 bytes, BW 0 Kbit <UP,BROADCAST,RUNNING,MULTICAST>
	Internet Address 10.1.1.1/24, Broadcast 10.1.1.255, 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 10.1.1.1
	Backup Designated Router (ID) 10.200.1.1, Interface Address 10.1.1.2
	Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
	Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
		Hello due in 5.460s
	Neighbor Count is 1, Adjacent neighbor count is 1
lo is up
	ifindex 1, MTU 16436 bytes, BW 0 Kbit <UP,LOOPBACK,RUNNING>
	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: <None>
	Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
		Hello due in inactive
	Neighbor Count is 0, Adjacent neighbor count is 0

Quagga_A#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	1496	0x8000001c	0x0c47	1
10.200.1.2		10.200.1.2	67	0x80000010	0xdfa2	2
		Net Link States (Area 0.0.0.0)
Link ID		ADV Router	Age	Seq#	CkSum
10.1.1.1		10.200.1.2	67	0x80000004	0xc009
		Summary Link States (Area 0.0.0.0)
Link ID		ADV Router	Age	Seq#	CkSum	Route
10.1.3.0		10.200.1.2	909	0x80000008	0x5e0a	10.1.3.0/24
10.1.4.0		10.200.1.2	79	0x80000009	0x5b0a	10.1.4.0/24
10.200.1.3		10.200.1.2	1790	0x80000008	0x039b	10.200.1.3/32
10.200.1.4		10.200.1.2	259	0x8000000a	0x5938	10.200.1.4/32
		Router Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum	Link count
10.1.4.2		10.1.4.2	736	0x80000010	0x8742	3
10.200.1.2		10.200.1.2	59	0x8000000c	0xe98b	1
10.200.1.4		10.200.1.4	470	0x8000000a	0x5927	2
		Net Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum
10.1.3.2		10.1.4.2	736	0x80000007	0xea43
10.1.4.2		10.1.4.2	736	0x80000008	0xf930
		Summary Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum	Route
0.0.0.0		10.200.1.2	179	0x80000009	0xcfb0	0.0.0.0/0
10.1.1.0		10.200.1.2	1309	0x80000007	0x94d8	10.1.1.0/24
10.200.1.2		10.200.1.2	309	0x80000009	0x1f82	10.200.1.2/32
		AS External Link States
10.200.1.1		10.200.1.2	109	0x80000009	0x8a73	E2 10.200.1.1/32 [0x0]

Quagga_A#show ip border-routers

============ OSPF router routing table =============

Quagga_A#show ip neighbor

Neighbor ID	Pri	State	Dead Time	Address	Interface	RXmtL	RqstL	DBsmL
10.200.1.	1	Full/Backup	32.136s	10.1.1.2	eth1:10.1.1.1	1	0	0
10.1.4.2	1	Full/DR	36.102s	10.1.3.2	eth0:10.1.3.1	0	0	0

Quagga_A#show ip ospf route

============ OSPF network routing table ============
N	10.1.1.0/24	[10] area: 0.0.0.0
		directly attached to eth1
N	10.1.3.0/24	[10] area: 0.0.0.1
		directly attached to eth0
N	10.1.4.0/24	[11] area: 0.0.0.1
		via 10.1.3.2, eth0
N	10.200.1.2/32	[10] area: 0.0.0.0
		directly attached to lo
N	10.200.1.3/32	[11] area: 0.0.0.1
		via 10.1.3.2, eth0
N	10.200.1.4/32	[21] area: 0.0.0.1
		via 10.1.3.2, eth0
============ OSPF router routing table =============
============ OSPF external routing table ===========

Quagga_A#show ip forwarding

IP forwarding is on

See explanation about Linux IP forwarding.

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CISCO 2651

Cisco_2651#show ip interface brief

Interface	IP-Address	OK?	Method	Status	Protocol
FastEthernet0/0	10.1.4.2	YES	NVRAM	up	up
FastEthernet0/1	10.1.3.2	YES	NVRAM	up	up
Loopback1	10.200.1.3	YES	manual	up	up

Cisco-2651#show interface FastEthernet 0/0

FastEthernet0/0 is up, line protocol is up
	Hardware is AmdFE, address is 0011.2211.3345 (bia 0011.2211.3345)
	Internet address is 10.1.4.2/24
	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 00:01:20, output 00:00:09, 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
		477 packets input, 46396 bytes
		Received 303 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
		603 packets output, 58014 bytes, 0 underruns
		0 output errors, 0 collisions, 1 interface resets
		0 babbles, 0 late collision, 0 deferred
		0 lost carrier, 0 no carrier
		0 output buffer failures, 0 output buffers swapped out

Cisco-2651#show ip route

Codes:		C - connected, S - static, 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 10.1.3.1 to network 0.0.0.0
	10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C		10.1.4.0/24 is directly connected, FastEthernet0/0
C		10.1.3.0/24 is directly connected, FastEthernet0/1
C		10.200.1.3/32 is directly connected, Loopback1
O		10.200.1.4/32 [110/11] via 10.1.4.1, 02:06:38, FastEthernet0/0
O IA		10.1.1.0/24 [110/11] via 10.1.3.1, 02:06:38, FastEthernet0/1
O IA		10.200.1.2/32 [110/11] via 10.1.3.1, 02:06:38, FastEthernet0/1
O*IA	0.0.0.0/0 [110/2] via 10.1.3.1, 02:06:40, FastEthernet0/1

Cisco-2651#show ip ospf border-routers

OSPF Process 1 internal Routing Table

Codes: i - Intra-area route, I - Inter-area route

i 10.200.1.2 [1] via 10.1.3.1, FastEthernet0/1, ABR, Area 1, SPF 12

Cisco-2651#show ip ospf database

	OSPF Router with ID (10.1.4.2) (Process ID 1)
		Router Link States (Area 1)
Link ID		ADV Router	Age	Seq#	Checksum	Link count
10.1.4.2		10.1.4.2	1800	0x8000000D	0x008D3F	3
10.200.1.2		10.200.1.2	414	0x80000009	0x00EF88	1
10.200.1.4		10.200.1.4	821	0x80000007	0x005F24	2
		Net Link States (Area 1)
Link ID		ADV Router	Age	Seq#	Checksum
10.1.3.2		10.1.4.2	1800	0x80000004	0x00F040
10.1.4.2		10.1.4.2	1800	0x80000005	0x00FF2D
		Summary Net Link States (Area 1)
Link ID		ADV Router	Age	Seq#	Checksum
0.0.0.0		10.200.1.2	595	0x80000006	0x00D5AD
10.1.1.0		10.200.1.2	79	0x80000004	0x009AD5
10.200.1.2		10.200.1.2	1790	0x80000006	0x00257F

Cisco-2651#show ip ospf interface

Loopback1 is up, line protocol is up
	Internet Address 10.200.1.3/32, Area 1
	Process ID 1, Router ID 10.1.4.2, Network Type LOOPBACK, Cost: 1
	Loopback interface is treated as a stub Host
FastEthernet0/0 is up, line protocol is up
	Internet Address 10.1.4.2/24, Area 1
	Process ID 1, Router ID 10.1.4.2, Network Type BROADCAST, Cost: 1
	Transmit Delay is 1 sec, State DR, Priority 1
	Designated Router (ID) 10.1.4.2, Interface address 10.1.4.2
	Backup Designated router (ID) 10.200.1.4, Interface address 10.1.4.1
	Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
		Hello due in 00:00:02
	Index 2/2, flood queue length 0
	Next 0x0(0)/0x0(0)
	Last flood scan length is 1, maximum is 4
	Last flood scan time is 0 msec, maximum is 0 msec
	Neighbor Count is 1, Adjacent neighbor count is 1
		Adjacent with neighbor 10.200.1.4 (Backup Designated Router)
	Suppress hello for 0 neighbor(s)
FastEthernet0/1 is up, line protocol is up
	Internet Address 10.1.3.2/24, Area 1
	Process ID 1, Router ID 10.1.4.2, Network Type BROADCAST, Cost: 1
	Transmit Delay is 1 sec, State DR, Priority 1
	Designated Router (ID) 10.1.4.2, Interface address 10.1.3.2
	Backup Designated router (ID) 10.200.1.2, Interface address 10.1.3.1
	Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
		Hello due in 00:00:01
	Index 1/1, flood queue length 0
	Next 0x0(0)/0x0(0)
	Last flood scan length is 1, maximum is 3
	Last flood scan time is 0 msec, maximum is 0 msec
	Neighbor Count is 1, Adjacent neighbor count is 1
		Adjacent with neighbor 10.200.1.2 (Backup Designated Router)
	Suppress hello for 0 neighbor(s)

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QUAGGA B ROUTER

Quagga_B#show interface description

Interface	Status	Protocol	Description
eth0	up	up
lo	up	up

Quagga_B#show interface eth0

Interface eth0 is up, line protocol is up
	index 2 metric 1 mtu 1500
	flags: <UP,BROADCAST,RUNNING,MULTICAST>
	HWaddr: 00:02:11:22:88:88
	inet 10.1.4.1/24 broadcast 10.1.4.255
	inet6 fe80::201:66ff:1122:8888/64
		2598 input packets (0 multicast), 213456 bytes, 0 dropped
		0 input errors, 0 length, 0 overrun, 0 CRC, 0 frame
		0 fifo, 0 missed
		2491 output packets, 229815 bytes, 0 dropped
		0 output errors, 0 aborted, 0 carrier, 0 fifo, 0 heartbeat
		0 window, 0 collisions

Quagga_B (Linux level)#route -n

Kernel IP routing table
Destination	Gateway	Genmask	Indic	Metric	Ref	Use	Iface
10.200.1.3	10.1.4.2	255.255.255.255	UGH	11	0	0	eth0
10.200.1.2	10.1.4.2	255.255.255.255	UGH	21	0	0	eth0
10.1.4.0	0.0.0.0	255.255.255.0	U	0	0	0	eth0
10.1.1.0	10.1.4.2	255.255.255.0	UG	21	0	0	eth0
10.1.3.0	10.1.4.2	255.255.255.0	UG	11	0	0	eth0
0.0.0.0	10.1.4.2	0.0.0.0	UG	12	0	0	eth0

Quagga_B#show ip route

Codes:		K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
		I - ISIS, B - BGP, > - selected route, * - FIB route
C>*	10.1.4.0/24 is directly connected, eth0
C>*	10.200.1.4/32 is directly connected, lo
C>*	127.0.0.0/8 is directly connected, lo
O	10.1.4.0/24 [110/10] is directly connected, eth0, 01:04:26
O	10.200.1.4/32 [110/10] is directly connected, lo, 01:04:26
O	10.1.1.0/24 [110/21] via 10.1.4.2, eth0, 00:28:00
O>*	10.1.3.0/24 [110/11] via 10.1.4.2, eth0, 00:52:54
O>*	10.200.1.2/32 [110/21] via 10.1.4.2, eth0, 00:28:04
O>*	10.200.1.3/32 [110/11] via 10.1.4.2, eth0, 01:04:17
O>*	0.0.0.0/0 [110/12] via 10.1.4.2, eth0, 00:28:04

Quagga_B#show ip ospf border-routers

============ OSPF router routing table =============
R	10.200.1.2	[11] area: 0.0.0.1, ABR
		via 10.1.4.2, eth0

Quagga_B#show ip ospf database

	OSPF Router with ID (10.200.1.4)
		Router Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum	Link count
10.1.4.2		10.1.4.2	1718	0x8000000a	0x933c	3
10.200.1.2		10.200.1.2	1690	0x80000005	0xf784	1
10.200.1.4		10.200.1.4	294	0x80000004	0x6521	2
		Net Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum
10.1.3.2		10.1.4.2	1718	0x80000001	0xf63d
10.1.4.2		10.1.4.2	1887	0x80000002	0x062a
		Summary Link States (Area 0.0.0.1 [Stub])
Link ID		ADV Router	Age	Seq#	CkSum	Route
0.0.0.0		10.200.1.2	163	0x80000003	0xdbaa	0.0.0.0/0
10.1.1.0		10.200.1.2	1715	0x80000001	0xa0d2	10.1.1.0/24
10.200.1.2		10.200.1.2	143	0x80000003	0x2b7c	10.200.1.2/32

Quagga_B#show ip ospf route

============ OSPF network routing table ============
N	IA	0.0.0.0/0	[12] area: 0.0.0.1
			via 10.1.4.2, eth0
N	IA	10.1.1.0/24	[21] area: 0.0.0.1
			via 10.1.4.2, eth0
N		10.1.3.0/24	[11] area: 0.0.0.1
			via 10.1.4.2, eth0
N		10.1.4.0/24	[10] area: 0.0.0.1
			directly attached to eth0
N	IA	10.200.1.2/32	[21] area: 0.0.0.1
			via 10.1.4.2, eth0
N		10.200.1.3/32	[11] area: 0.0.0.1
			via 10.1.4.2, eth0
N		10.200.1.4/32	[10] area: 0.0.0.1
			directly attached to lo
============ OSPF router routing table =============
R		10.200.1.2	[11] area: 0.0.0.1, ABR
			via 10.1.4.2, eth0
============ OSPF external routing table ===========

Quagga_B#show ip ospf neighbor

Neighbor ID	Pri	State	Dead Time	Address	Interface	RXmtL	RqstL	DBsmL
10.1.4.2	1	Full/DR	33.812s	10.1.4.2	eth0:10.1.4.1	0	0	0

Quagga_B#show ip forwarding

IP forwarding is off

See for explanation on Linux IP forwarding.

Quagga_B#show ip ospf interface

eth0 is up
	ifindex 2, MTU 1500 bytes, BW 0 Kbit <UP,BROADCAST,RUNNING,MULTICAST>
	Internet Address 10.1.4.1/24, Broadcast 10.1.4.255, Area 0.0.0.1 [Stub]
	MTU mismatch detection:enabled
	Router ID 10.200.1.4, Network Type BROADCAST, Cost: 10
	Transmit Delay is 1 sec, State Backup, Priority 1
	Designated Router (ID) 10.1.4.2, Interface Address 10.1.4.2
	Backup Designated Router (ID) 10.200.1.4, Interface Address 10.1.4.1
	Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
	Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
		Hello due in 6.517s
	Neighbor Count is 1, Adjacent neighbor count is 1
lo is up
	ifindex 1, MTU 16436 bytes, BW 0 Kbit <UP,LOOPBACK,RUNNING>
	Internet Address 10.200.1.4/32, Area 0.0.0.1 [Stub]
	MTU mismatch detection:enabled
	Router ID 10.200.1.4, 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: <None>
	Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
		Hello due in inactive
	Neighbor Count is 0, Adjacent neighbor count is 0

Quagga_B#traceroute 10.200.1.1

traceroute to 10.200.1.1 (10.200.1.1), 30 hops max, 40 byte packets
	1	10.1.4.2	0.918 ms	0.960 ms	0.951 ms
	2	10.1.3.1	0.416 ms	0.336 ms	0.340 ms
	3	10.1.1.2	0.790 ms	*	0.834 ms

Traceroute must be installed on your operational system to be used under the Quagga router. See the Quagga tutorial for help.