H3C S3500-EA IPv4 IS-IS基本配置

H3C S3500-EA IPv4 IS-IS基本配置

一、  组网需求：

如下图所示，Switch A、Switch B、Switch C和Switch D属于同一自治系统，要求他们之间通过IS-IS协议达到IP网络互连的目的。

其中，Switch A和Switch B为Level-1交换机，Switch D为Level-2交换机，Switch C作为Level-1-2交换机将两个区域相连。Switch A、Switch B和Switch C的区域号为10，Switch D的区域号为20。

二、  组网图：

 

三、  配置步骤：

(1)    配置各接口的IPv4地址(略)

(2)    配置IS-IS

# 配置Switch A。

<SwitchA> system-view

[SwitchA] isis 1

[SwitchA-isis-1] is-level level-1

[SwitchA-isis-1] network-entity 10.0000.0000.0001.00

[SwitchA-isis-1] quit

[SwitchA] interface vlan-interface 100

[SwitchA-Vlan-interface100] isis enable 1

[SwitchA-Vlan-interface100] quit

# 配置Switch B。

<SwitchB> system-view

[SwitchB] isis 1

[SwitchB-isis-1] is-level level-1

[SwitchB-isis-1] network-entity 10.0000.0000.0002.00

[SwitchB-isis-1] quit

[SwitchB] interface vlan-interface 200

[SwitchB-Vlan-interface200] isis enable 1

[SwitchB-Vlan-interface200] quit

# 配置Switch C。

<SwitchC> system-view

[SwitchC] isis 1

[SwitchC-isis-1] network-entity 10.0000.0000.0003.00

[SwitchC-isis-1] quit

[SwitchC] interface vlan-interface 100

[SwitchC-Vlan-interface100] isis enable 1

[SwitchC-Vlan-interface100] quit

[SwitchC] interface vlan-interface 200

[SwitchC-Vlan-interface200] isis enable 1

[SwitchC-Vlan-interface200] quit

[SwitchC] interface vlan-interface 300

[SwitchC-Vlan-interface300] isis enable 1

[SwitchC-Vlan-interface300] quit

# 配置Switch D。

<SwitchD> system-view

[SwitchD] isis 1

[SwitchD-isis-1] is-level level-2

[SwitchD-isis-1] network-entity 20.0000.0000.0004.00

[SwitchD-isis-1] quit

[SwitchD] interface vlan-interface 100

[SwitchD-Vlan-interface100] isis enable 1

[SwitchD-Vlan-interface100] quit

[SwitchD] interface vlan-interface 300

[SwitchD-Vlan-interface300] isis enable 1

[SwitchD-Vlan-interface300] quit

(3)    验证配置结果

# 显示各交换机的IS-IS LSDB信息，查看LSP是否完整。

[SwitchA] 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* 0x00000004   0xdf5e   1096       68      0/0/0

0000.0000.0002.00-00  0x00000004   0xee4d   1102       68      0/0/0

0000.0000.0002.01-00  0x00000001   0xdaaf   1102       55      0/0/0

0000.0000.0003.00-00  0x00000009   0xcaa3   1161       111     1/0/0

0000.0000.0003.01-00  0x00000001   0xadda   1112       55      0/0/0

    *-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload

[SwitchB] 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   0xdb60   988       68      0/0/0

0000.0000.0002.00-00* 0x00000008   0xe651  1189        68      0/0/0

0000.0000.0002.01-00* 0x00000005   0xd2b3  1188        55      0/0/0

0000.0000.0003.00-00  0x00000014   0x194a  1190        111     1/0/0

0000.0000.0003.01-00  0x00000002   0xabdb  995         55      0/0/0

    *-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload

[SwitchC] 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   0xdb60  847         68      0/0/0

0000.0000.0002.00-00  0x00000008   0xe651  1053        68      0/0/0

0000.0000.0002.01-00  0x00000005   0xd2b3  1052        55      0/0/0

0000.0000.0003.00-00* 0x00000014   0x194a  1051        111     1/0/0

0000.0000.0003.01-00* 0x00000002   0xabdb  854         55      0/0/0

    *-Self 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* 0x00000012   0xc93c  842         100     0/0/0

0000.0000.0004.00-00  0x00000026   0x331   1173        84      0/0/0

0000.0000.0004.01-00  0x00000001   0xee95  668         55      0/0/0

    *-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload

[SwitchD] 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  0x00000013   0xc73d 1003      100     0/0/0

0000.0000.0004.00-00* 0x0000003c   0xd647  1194        84      0/0/0

0000.0000.0004.01-00* 0x00000002   0xec96  1007    55      0/0/0

*-Self LSP, +-Self LSP(Extended), ATT-Attached, P-Partition, OL-Overload

# 显示各交换机的IS-IS路由信息。Level-1交换机的路由表中应该有一条缺省路由，且下一跳为Level-1-2交换机，Level-2交换机的路由表中应该有所有Level-1和Level-2的路由。

[SwitchA] display isis route

                         Route information for ISIS(1)

                         -----------------------------

                     ISIS(1) IPv4 Level-1 Forwarding Table

                     -------------------------------------

 IPV4 Destination IntCost  ExtCost ExitInterface   NextHop      Flags

--------------------------------------------------------------------

 10.1.1.0/24    10        NULL    Vlan100         Direct       D/L/-

 10.1.2.0/24    20        NULL    Vlan100         10.1.1.1     R/-/-

 192.168.0.0/24 20        NULL    Vlan100         10.1.1.1     R/-/-

 0.0.0.0/0      10        NULL    Vlan100         10.1.1.1     R/-/-

 Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

[SwitchC] display isis route

                         Route information for ISIS(1)

                         -----------------------------

                     ISIS(1) IPv4 Level-1 Forwarding Table

                     -------------------------------------

 IPV4 Destination IntCost   ExtCost ExitInterface  NextHop      Flags

--------------------------------------------------------------------

 192.168.0.0/24  10        NULL    Vlan300        Direct       D/L/-

 10.1.1.0/24    10         NULL    Vlan100        Direct       D/L/-

 10.1.2.0/24    10         NULL    Vlan200        Direct       D/L/-

Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

                     ISIS(1) IPv4 Level-2 Forwarding Table

                     -------------------------------------

 IPV4 Destination IntCost  ExtCost ExitInterface   NextHop      Flags

--------------------------------------------------------------------

 192.168.0.0/24   10      NULL    Vlan300         Direct       D/L/-

 10.1.1.0/24    10        NULL    Vlan100         Direct       D/L/-

 10.1.2.0/24    10        NULL    Vlan200         Direct       D/L/-

 172.16.0.0/16  20        NULL    Vlan300         192.168.0.2  R/-/-

 Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

[SwitchD] display isis route

                         Route information for ISIS(1)

                         -----------------------------

                     ISIS(1) IPv4 Level-2 Forwarding Table

                     -------------------------------------

 IPV4 Destination IntCost  ExtCost ExitInterface   NextHop      Flags

--------------------------------------------------------------------

 192.168.0.0/24  10       NULL    Vlan300         Direct       D/L/-

 10.1.1.0/24    20        NULL    Vlan300         192.168.0.1  R/-/-

 10.1.2.0/24    20        NULL    Vlan300         192.168.0.1  R/-/-

 172.16.0.0/16  10        NULL    Vlan100         Direct       D/L/-

Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

四、  配置关键点：

无。