2 / ИСС / Функции коммутаторов D-Link 3-его уровня и примеры их использования_SMM

OSPF

, ,

- Border Routers (BR).

.

IR: ,

« » - Internal Router.

ABR: ,

- Area Border

Router.

ASBR: , ()

- Autonomous System Border Routers (ASBR).

,

•

–

.

–,

.

– LSA . LSA

, - “cost”

cost-TOS.

•

–LSA (routing domain). AS – Autonomous System () AS.

– area_ID

. area_ID

, .

,

•

– , , .

– , , .

•

– .

–

,

.

.

•

–

.

.

Router

Router

						Router
Router
		Router
			Router

• Area 0, “VIRTUAL

LINK” – .

• “Logical Link”

, Area 0. , 46,48

() 11,45 Area 0.

:

(1), .

(2), Area 0.

ABR, , .

OSPF

Router		Router		Router		Router

–

().

ABR –

.

OSPF RIPv2

1. OSPF, 15

, RIP.

2.OSPF IP Multicast

.

3.OSPF , RIP.

4.OSPF .

5.OSPF ,

,

.

6.OSPF .

7.OSPF AS

.

OSPF – : 1/2

!!1 !2 3
192.168.1.x	192.168.2.x	192.168.3.x

DGS-3324SR_1 192.168.1.253 192.168.2.254

192.168.3.254

DGS-3324SR_2

Area 0.0.0.0

!
	!
		1					5
!4
	192.168.1.x					192.168.5.x
				192.168.4.x			192.168.5.254
			192.168.1.254
192.168.4.254
	:		OSPF				,	:
1.	DGS-3324SR_1				(	4	5),	DGS-3324SR_2.
2.	DGS-3324SR_2				(	2	3),	DGS-3324SR_1.
	:

OSPF , OSPF .

.

.

DGS-3324SR_1 ():

1. VLAN- IP-1, 2 3, .

2. OSPF :

enable ospf

config ospf ipif net1 state enabled config ospf all state enabled

( OSPF ) DGS-3324SR_2 ():

• VLAN- IP-1, 4 5, .

• OSPF :

enable ospf

config ospf ipif net1 state enabled config ospf all state enabled

:

1. “show iproute” ,

4 5 OSPF.

2. “show iproute” ,

2 3 OSPF.

3.

.

! 1

192.168.1.x

192.168.1.253

! 2
192.168.2.x
	192.168.2.253

DGS-3324SR_1

DGS-3324SR_2

DGS-3324SR_3

! !3

!1 !2

4

192.168.3.x

192.168.1.x

192.168.2.x

192.168.4.x

192.168.3.254 192.168.1.254 192.168.2.254

192.168.4.254

		Area
	:	0.0.0.0

OSPF , :

1.DGS-3324SR_1 (3 4).

2.DGS-3324SR_2 (2 4).

3.DGS-3324SR_3 (1 3).

:

OSPF – : 1/3

! !1 !2 3
0.0.0.0	192.168.2.x	192.168.3.x
192.168.1.x

192.168.1.253 192.168.2.254

192.168.3.254

1.0.0.0

DGS-3324SR_1

DGS-3324SR_2

2.0.0.0

!
!1
!4 5
192.168.1.x	192.168.5.x
192.168.4.x
192.168.1.254
192.168.4.254 192.168.5.254