1、華為路由器IS-IS基本配置實例組網需求如圖1所示： · S-switch-A、S-switch-B、S-switch-C和S-switch-D屬于同一自治系統，要求他們之間通過IS-IS協議達到IP網絡互連的目的。· S-switch-A、S-switch-B和S-switch-C的區域號是10，S-switch-D的區域號是20。· S-switch-A和S-switch-B是Level-1設備，S-switch-C是Level-1-2設備，S-switch-D是Level-2設備。圖1 IS-IS基本配置組網圖 S-switch接口對應的VLANIFIP地址

2、S-switch-AGE 0/0/1VLANIF 1010.1.1.2/24S-switch-BGE 0/0/1VLANIF 2010.1.2.2/24S-switch-CGE 0/0/1VLANIF 1010.1.1.1/24S-switch-CGE 0/0/2VLANIF 2010.1.2.1/24S-switch-CGE 0/0/3VLANIF 30192.168.0.1/24S-switch-DGE 0/0/1VLANIF 30192.168.0.2/24S-switch-DGE 0/0/2VLANIF 40172.16.1.1/24配置思路采用如下的思路配置IS-IS的基本功能： 1

3、. 配置各物理接口所屬的VLAN。2. 配置各VLANIF接口的IP地址。3. 在各S-switch上運行IS-IS進程，指定網絡實體，配置level級別。4. 查看各S-switch的IS-IS數據庫信息及路由表信息。數據準備為完成此配置例，需準備如下的數據： · 各接口所屬的VLAN ID，具體數據如圖1所示。· 各VLANIF接口的IP地址，具體數據如圖1所示。· 四臺S-switch的system id、級別和所屬區域號。 § S-switch-A的system id 0000.0000.0001，區域號Area10，為Level-1設備。

4、67; S-switch-B的system id 0000.0000.0002，區域號Area10，為Level-1設備。§ S-switch-C的system id 0000.0000.0003，區域號Area10，為Level-1-2設備。§ S-switch-D的system id 0000.0000.0004，區域號Area20，為Level-2設備。配置步驟1. 配置各接口所屬的VLAN ID（略）2. 配置各VLANIF接口的IP地址（略）3. 在各S-switch上運行IS-IS進程，指定網絡實體，配置level級別# 配置S-switch-A。S-switc

5、h-A isis 1S-switch-A-isis-1 is-level level-1S-switch-A-isis-1 network-entity 10.0000.0000.0001.00S-switch-A-isis-1 quit# 配置S-switch-B。S-switch-B isis 1S-switch-B-isis-1 is-level level-1S-switch-B-isis-1 network-entity 10.0000.0000.0002.00S-switch-B-isis-1 quit# 配置S-switch-C。S-switch-C isis 1S-switch

6、-C-isis-1 network-entity 10.0000.0000.0003.00S-switch-C-isis-1 quit# 配置S-switch-D。S-switch-D isis 1S-switch-D-isis-1 is-level level-2S-switch-D-isis-1 network-entity 20.0000.0000.0004.00S-switch-D-isis-1 quit4. 在各接口上使能IS-IS進程，使能IS-IS small-hello。# 配置S-switch-A。S-switch-A interface vlanif 10S-switch-

7、A-Vlanif10 isis enable 1S-switch-A-Vlanif10 quit# 配置S-switch-B。S-switch-B interface vlanif 20S-switch-B-Vlanif20 isis enable 1S-switch-B-Vlanif20 quit# 配置S-switch-C。S-switch-C interface vlanif 10S-switch-C-Vlanif10 isis enable 1S-switch-C-Vlanif10 quitS-switch-C interface vlanif 20S-switch-C-Vlanif2

8、0 isis enable 1S-switch-C-Vlanif20 quitS-switch-C interface vlanif 30S-switch-C-Vlanif30 isis enable 1S-switch-C-Vlanif30 quit# 配置S-switch-D。S-switch-D interface vlanif 30S-switch-D-Vlanif30 isis enable 1S-switch-D-Vlanif30 quitS-switch-D interface vlanif 40S-switch-D-Vlanif40 isis enable 1S-switch-

9、D-Vlanif40 quit5. 驗證配置結果# 查看各S-switch的IS-IS LSDB信息。S-switch-A display isis lsdb Database information for ISIS(1) - Level-1 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL-0000.0000.0001.00-00* 0x00000006 0xbf7d 649 68 0/0/00000.0000.0002.00-00 0x00000003 0xef4d 545 68 0/0/00000.0

10、000.0003.00-00 0x00000008 0x3340 582 111 1/0/00000.0000.0003.01-00 0x00000004 0xa7dd 582 55 0/0/00000.0000.0003.02-00 0x00000002 0xc0c4 524 55 0/0/0 *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-OverloadS-switch-B display isis lsdb Database inform

11、ation for ISIS(1) - Level-1 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL-0000.0000.0001.00-00 0x00000006 0xbf7d 642 68 0/0/00000.0000.0002.00-00* 0x00000003 0xef4d 538 68 0/0/00000.0000.0003.00-00 0x00000008 0x3340 574 111 1/0/00000.0000.0003.01-00 0x00000004 0xa7dd 582 55 0/0

12、/00000.0000.0003.02-00 0x00000002 0xc0c4 524 55 0/0/0 *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-OverloadS-switch-C display isis lsdb Database information for ISIS(1) - Level-1 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL

13、-0000.0000.0001.00-00 0x00000006 0xbf7d 638 68 0/0/00000.0000.0002.00-00 0x00000003 0xef4d 533 68 0/0/00000.0000.0003.00-00* 0x00000008 0x3340 569 111 1/0/00000.0000.0003.01-00* 0x00000005 0xa7dd 569 55 0/0/00000.0000.0003.02-00* 0x00000003 0xc0c4 569 55 0/0/0 *(In TLV)-Leaking Route, *(By LSPID)-Se

14、lf LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload Level-2 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL-0000.0000.0003.00-00* 0x00000008 0x55bb 650 100 0/0/00000.0000.0003.03-00* 0x00000003 0xef91 650 55 0/0/00000.0000.0004.00-00 0x00000005 0x651 629 84 0/0/0

15、 *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload S-switch-D display isis lsdb Database information for ISIS(1) - Level-2 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL-0000.0000.0003.00-00 0x00000008 0x55bb 644 100 0/0/

16、00000.0000.0003.03-00 0x00000003 0xef91 644 55 0/0/00000.0000.0004.00-00* 0x00000005 0x651 624 84 0/0/0 *(In TLV)-Leaking Route, *(By LSPID)-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload# 查看各S-switch的IS-IS路由信息。Level-1設備的路由表中應該有一條缺省路由，且下一跳為Level-1-2設備，Level-2設備應該有所有Level-1和Le

17、vel-2的路由。S-switch-A display isis route Route information for ISIS(1) - ISIS(1) Level-1 Forwarding Table - IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags-0.0.0.0/0 10 NULL Vlanif10 10.1.1.1 A/-/-/- 10.1.1.0/24 10 NULL Vlanif10 Direct D/-/L/- 10.1.2.0/24 20 NULL Vlanif10 10.1.1.1 A/-/-/-

18、 192.168.0.0/24 20 NULL Vlanif10 10.1.1.1 A/-/-/- Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut, U-Up/Down Bit SetS-switch-C display isis route Route information for ISIS(1) - ISIS(1) Level-1 Forwarding Table - IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags- 10.

19、1.1.0/24 10 NULL Vlanif10 Direct D/-/L/- 10.1.2.0/24 10 NULL Vlanif20 Direct D/-/L/- 192.168.0.0/24 10 NULL Vlanif30 Direct D/-/L/- Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut, U-Up/Down Bit Set ISIS(1) Level-2 Forwarding Table - IPV4 Destination IntCost ExtCost ExitInterfa

20、ce NextHop Flags- 10.1.1.0/24 10 NULL Vlanif10 Direct D/-/L/- 10.1.2.0/24 10 NULL Vlanif20 Direct D/-/L/- 192.168.0.0/24 10 NULL Vlanif30 Direct D/-/L/- 172.16.0.0/16 20 NULL Vlanif40 192.168.0.2 A/-/-/- Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut, U-Up/Down Bit Set S-switc

21、h-D display isis route Route information for ISIS(1) - ISIS(1) Level-2 Forwarding Table - IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags- 192.168.0.0/24 10 NULL Vlanif30 Direct D/-/L/- 10.1.1.0/24 20 NULL Vlanif30 192.168.0.1 A/-/-/- 10.1.2.0/24 20 NULL Vlanif30 192.168.0.1 A/-/-/- 172

22、.16.0.0/16 10 NULL Vlanif40 Direct A/-/-/- Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut, U-Up/Down Bit Set配置文件· S-switch-A的配置文件# sysname S-switch-A# vlan batch 10#isis 1 is-level level-1network-entity 10.0000.0000.0001.00#interface Vlanif10 ip address 10.1.1.2 255.255.2

23、55.0 isis enable 1#interface GigabitEthernet0/0/1 port trunk allow-pass vlan 10#return· S-switch-B的配置文件# sysname S-switch-B# vlan batch 20#isis 1 is-level level-1network-entity 10.0000.0000.0002.00#interface Vlanif20 ip address 10.1.2.2 255.255.255.0 isis enable 1#interface GigabitEthernet0/0/1 port trunk allow-pass vlan 20#return· S-switch-C的配置文件# sysname S-switch-C# vlan batch 10 20 30#isis 1network-entity 10.0000.0000.0003