HCIP2--ISIS

ospf的网络类型：
首先明确Router LSA中的链路类型（p2p、transnet、stub、virtual-link）不是一个概念，但是有关联。
网络类型分类：
p2p p2p 指的是一种从一个接口只能通过介质只能到达另一个唯一接口的网络，其链路类型是p2p，常见的线路一般是广域网的串型线路
二层协议是PPP和HDLC都是P2P线路
p2mp 没有一种线路默认是P2MP，这种线路是人工强制指定的一种线路，一般用于改造默认为NBMA的线路或者hub-spoke类型的线路
MA BMA
NBMA
点到多点P2MP是点到点P2P的集合
P2MP的由来：spoke访问spoke时需经过hub，拓扑结构连通性与实际连通性冲突，实际结构spoke无法直接访问spoke；MA网段中生成的下一跳与实际不符
LSA5/LSA7携带外部路由的TAG信息

ISIS协议（intermediate system）：一种运行在路由器之间的路由协议，基于链路状态并使用最短路径优先算法进行路由计算的IGP协议，属于TCP/IP体系

ISIS适合骨干网：扁平结构、收敛极快、承载庞大
特点：简便性、扩展性强

路由计算过程：建邻—同步LSDB—执行SPF路由计算（最短路径树）

路由器分类：
level-1—普通区域路由器
level-2—骨干区域路由器
level-1-2—既有骨干也有非骨干的区域，类似ABR的角色，路由器默认角色

OSPF：先骨干再区域 ISIS：先区域再骨干
邻居hello报文：点到点P2P、广播broadcast

OSPF:ABR发送LSA使其余路由器同步
ISIS:其余路由器指向level-1-2，收到一条ATT为1的LSP

The device is running!

sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sy r1
[r1]int loo0
[r1-LoopBack0]ip add 1.1.1.1 32
[r1-LoopBack0]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 10.1.123.1 24
Mar 26 2021 11:06:50-08:00 r1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[r1-GigabitEthernet0/0/0]q
[r1]isis 100
[r1-isis-100]net
[r1-isis-100]network-entity 49.0001.0000.0000.0001.00
Mar 26 2021 11:10:27-08:00 r1 %%01ISIS/4/START_ENABLE_ISIS(l)[1]:ISIS 25600 enab
led all ISIS modules.
[r1-isis-100]
[r1-isis-100]isis le
[r1-isis-100]isis
[r1-isis-100]i
[r1-isis-100]import-route
[r1-isis-100]ipv6
[r1-isis-100]is-level
[r1-isis-100]is-name
[r1-isis-100]import-route
[r1-isis-100]ipv6
[r1-isis-100]is-level le
[r1-isis-100]is-level level-1
Mar 26 2021 11:10:49-08:00 r1 %%01ISIS/4/START_DISABLE_ISIS(l)[2]:ISIS 25600 dis
abled all ISIS modules.
Info: IS Level Changed, Resetting ISIS…
[r1-isis-100]
[r1-isis-100]
Mar 26 2021 11:10:49-08:00 r1 %%01ISIS/4/START_ENABLE_ISIS(l)[3]:ISIS 25600 enab
led all ISIS modules.
[r1-isis-100]int g0/0/0
[r1-GigabitEthernet0/0/0]isis en
[r1-GigabitEthernet0/0/0]isis enable 100
[r1-GigabitEthernet0/0/0]isis di
[r1-GigabitEthernet0/0/0]isis dis-name
[r1-GigabitEthernet0/0/0]isis dis-priority 120 le
[r1-GigabitEthernet0/0/0]isis dis-priority 120 level-1
[r1-GigabitEthernet0/0/0]
Mar 26 2021 11:12:27-08:00 r1 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[4]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0002, InterfaceName=G
E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1)
[r1-GigabitEthernet0/0/0]
Mar 26 2021 11:13:20-08:00 r1 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[5]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0003, InterfaceName=G
E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1)
[r1-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

The device is running!

Mar 26 2021 11:05:17-08:00 Huawei %%01IFPDT/4/IF_STATE(l)[0]:Interface GigabitEt hernet0/0/1 has turned into UP state. sys Enter system view, return user view with Ctrl+Z. [Huawei]sy r2 [r2]int loo0 [r2-LoopBack0]ip add 2.2.2.2 32 [r2-LoopBack0]int g0/0/0 [r2-GigabitEthernet0/0/0]ip add 10.1.123.2 24 Mar 26 2021 11:07:20-08:00 r2 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [r2-GigabitEthernet0/0/0]int g0/0/1 [r2-GigabitEthernet0/0/1]ip add 24.1.1.1 24 [r2-GigabitEthernet0/0/1] Mar 26 2021 11:07:31-08:00 r2 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IP on the interface GigabitEthernet0/0/1 has entered the UP state. [r2-GigabitEthernet0/0/1]q [r2]isis 100 [r2-isis-100]net [r2-isis-100]network-entity 49.0001.0000.0000.0002.00 Mar 26 2021 11:12:14-08:00 r2 %%01ISIS/4/START_ENABLE_ISIS(l)[3]:ISIS 25600 enab led all ISIS modules. [r2-isis-100] [r2-isis-100]int g0/0/0 [r2-GigabitEthernet0/0/0]isis en [r2-GigabitEthernet0/0/0]isis enable 100 Mar 26 2021 11:12:26-08:00 r2 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[4]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0001, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1) [r2-GigabitEthernet0/0/0] Mar 26 2021 11:13:20-08:00 r2 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[5]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0003, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1) [r2-GigabitEthernet0/0/0] Mar 26 2021 11:13:20-08:00 r2 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[6]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0003, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L2_ADJ, Level=Level-2) [r2-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

sy
Enter system view, return user view with Ctrl+Z.
[r2]isis 100
[r2-isis-100]net
[r2-isis-100]network-entity 49.0001.0000.0000.0002.00
[r2-isis-100]im
[r2-isis-100]import-route isis le
[r2-isis-100]import-route isis level-1
[r2-isis-100]import-route isis level-1-2
[r2-isis-100]import-route isis level-2 in
[r2-isis-100]import-route isis level-2 into le
[r2-isis-100]import-route isis level-2 into level-1
[r2-isis-100]int g0/01
^
Error: Unrecognized command found at ‘^’ position.
[r2-isis-100]int g0/0/1
[r2-GigabitEthernet0/0/1]isis en
[r2-GigabitEthernet0/0/1]isis enable 100
[r2-GigabitEthernet0/0/1]
The device is running!

Mar 26 2021 11:05:17-08:00 Huawei %%01IFPDT/4/IF_STATE(l)[0]:Interface Serial4/0 /0 has turned into UP state. Mar 26 2021 11:05:20-08:00 Huawei %%01IFNET/4/LINK_STATE(l)[1]:The line protocol PPP on the interface Serial4/0/0 has entered the UP state. sys Enter system view, return user view with Ctrl+Z. [Huawei]sy r3 [r3]int loo0 [r3-LoopBack0]ip add 3.3.3.3 32 [r3-LoopBack0]int g0/0/0 [r3-GigabitEthernet0/0/0]ip add 10.1.123.3 24 Mar 26 2021 11:07:55-08:00 r3 %%01IFNET/4/LINK_STATE(l)[2]:The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [r3-GigabitEthernet0/0/0]int s4/0/0 [r3-Serial4/0/0]ip add 34.1.1.1 24 [r3-Serial4/0/0] Mar 26 2021 11:08:41-08:00 r3 %%01IFNET/4/LINK_STATE(l)[3]:The line protocol PPP IPCP on the interface Serial4/0/0 has entered the UP state. [r3-Serial4/0/0]isis 100 [r3-isis-100]net [r3-isis-100]network-entity 49.0001.0000.0000.0003.00 Mar 26 2021 11:13:10-08:00 r3 %%01ISIS/4/START_ENABLE_ISIS(l)[4]:ISIS 25600 enab led all ISIS modules. [r3-isis-100] [r3-isis-100]int g0/0/0 [r3-GigabitEthernet0/0/0]isis en [r3-GigabitEthernet0/0/0]isis enable 100 Mar 26 2021 11:13:19-08:00 r3 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[5]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0001, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1) [r3-GigabitEthernet0/0/0] Mar 26 2021 11:13:20-08:00 r3 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[6]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0002, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L1_ADJ, Level=Level-1) [r3-GigabitEthernet0/0/0] Mar 26 2021 11:13:20-08:00 r3 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[7]:The neighbor of ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0002, InterfaceName=G E0/0/0, CurrentState=up, ChangeType=NEW_L2_ADJ, Level=Level-2) [r3-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

sy
Enter system view, return user view with Ctrl+Z.
[r3]isis 100
[r3-isis-100]net
[r3-isis-100]network-entity 49.0001.0000.0000.0003.00
[r3-isis-100]im
[r3-isis-100]import-route isis le
[r3-isis-100]import-route isis level-1
[r3-isis-100]import-route isis level-1-2
[r3-isis-100]import-route isis level-2 int
[r3-isis-100]import-route isis level-2 into le
[r3-isis-100]import-route isis level-2 into level-1
[r3-isis-100]int s4/0/0
[r3-Serial4/0/0]isis en
[r3-Serial4/0/0]isis enable 100
[r3-Serial4/0/0]
The device is running!
########
sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sy r4
[r4]int loo0
[r4-LoopBack0]ip add 4.4.4.4 32
[r4-LoopBack0]int g0/0/1
[r4-GigabitEthernet0/0/1]ip add 24.1.1.2 24
[r4-GigabitEthernet0/0/1]
Mar 26 2021 11:08:28-08:00 r4 %%01IFNET/4/LINK_STATE(l)[7]:The line protocol IP
on the interface GigabitEthernet0/0/1 has entered the UP state.
[r4-GigabitEthernet0/0/1]int s4/0/0
[r4-Serial4/0/0]ip add 34.1.1.2 24
[r4-Serial4/0/0]
Mar 26 2021 11:08:42-08:00 r4 %%01IFNET/4/LINK_STATE(l)[8]:The line protocol PPP
IPCP on the interface Serial4/0/0 has entered the UP state.
[r4-Serial4/0/0]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 45.1.1.1 24
Mar 26 2021 11:08:59-08:00 r4 %%01IFNET/4/LINK_STATE(l)[9]:The line protocol IP
on the interface GigabitEthernet0/0/0 has entered the UP state.
[r4-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

sy
Enter system view, return user view with Ctrl+Z.
[r4]isis 100
[r4-isis-100]net
[r4-isis-100]network-entity 49.0002.0000.0000.0004.00
Mar 26 2021 11:15:29-08:00 r4 %%01ISIS/4/START_ENABLE_ISIS(l)[0]:ISIS 25600 enab
led all ISIS modules.
[r4-isis-100]
[r4-isis-100]is
[r4-isis-100]is-level le
[r4-isis-100]is-level level-1-2
[r4-isis-100]is-level level-2
Info: IS Level Changed, Resetting ISIS…
Mar 26 2021 11:15:36-08:00 r4 %%01ISIS/4/START_DISABLE_ISIS(l)[1]:ISIS 25600 dis
abled all ISIS modules.
[r4-isis-100]
[r4-isis-100]
Mar 26 2021 11:15:36-08:00 r4 %%01ISIS/4/START_ENABLE_ISIS(l)[2]:ISIS 25600 enab
led all ISIS modules.
[r4-isis-100]int g0/0/0
[r4-GigabitEthernet0/0/0]isis en
[r4-GigabitEthernet0/0/0]isis enable 100
[r4-GigabitEthernet0/0/0]isis ci
[r4-GigabitEthernet0/0/0]isis circuit-level
[r4-GigabitEthernet0/0/0]isis circuit-type p2p
[r4-GigabitEthernet0/0/0]
Mar 26 2021 11:17:37-08:00 r4 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[3]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0005, InterfaceName=G
E0/0/0, CurrentState=init, ChangeType=NEW_ADJ_CREATE, Level=Unknown)
[r4-GigabitEthernet0/0/0]
Mar 26 2021 11:17:38-08:00 r4 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[4]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0005, InterfaceName=G
E0/0/0, CurrentState=up, ChangeType=3_WAY_UP, Level=Level-2)
[r4-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

The device is running!

Mar 26 2021 11:05:18-08:00 Huawei %%01IFPDT/4/IF_STATE(l)[0]:Interface GigabitEt hernet0/0/0 has turned into UP state. sy Enter system view, return user view with Ctrl+Z. [Huawei]sy r5 [r5]int loo0 [r5-LoopBack0]ip add 5.5.5.5 32 [r5-LoopBack0]int g0/0/0 [r5-GigabitEthernet0/0/0]ip add 45.1.1.2 24 Mar 26 2021 11:09:25-08:00 r5 %%01IFNET/4/LINK_STATE(l)[1]:The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [r5-GigabitEthernet0/0/0]

Please check whether system data has been changed, and save data in time

Configuration console time out, please press any key to log on

sy
Enter system view, return user view with Ctrl+Z.
[r5]isis 100
[r5-isis-100]net
[r5-isis-100]network-entity 49.0002.0000.0000.0005.00
Mar 26 2021 11:16:56-08:00 r5 %%01ISIS/4/START_ENABLE_ISIS(l)[0]:ISIS 25600 enab
led all ISIS modules.
[r5-isis-100]
[r5-isis-100]is
[r5-isis-100]is-level le
[r5-isis-100]is-level level-1-2
[r5-isis-100]is-level level-2
Info: IS Level Changed, Resetting ISIS…
Mar 26 2021 11:17:18-08:00 r5 %%01ISIS/4/START_DISABLE_ISIS(l)[1]:ISIS 25600 dis
abled all ISIS modules.
[r5-isis-100]
[r5-isis-100]
Mar 26 2021 11:17:18-08:00 r5 %%01ISIS/4/START_ENABLE_ISIS(l)[2]:ISIS 25600 enab
led all ISIS modules.
[r5-isis-100]int g0/0/0
[r5-GigabitEthernet0/0/0]isis en
[r5-GigabitEthernet0/0/0]isis enable 100
[r5-GigabitEthernet0/0/0]isis cir
[r5-GigabitEthernet0/0/0]isis circuit-level
[r5-GigabitEthernet0/0/0]isis circuit-type p2p
Mar 26 2021 11:17:38-08:00 r5 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[3]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0004, InterfaceName=G
E0/0/0, CurrentState=init, ChangeType=NEW_ADJ_CREATE, Level=Unknown)
[r5-GigabitEthernet0/0/0]
Mar 26 2021 11:17:38-08:00 r5 %%01ISIS/4/ADJ_CHANGE_LEVEL(l)[4]:The neighbor of
ISIS was changed. (IsisProcessId=25600, Neighbor=0000.0000.0004, InterfaceName=G
E0/0/0, CurrentState=up, ChangeType=3_WAY_UP, Level=Level-2)
[r5-GigabitEthernet0/0/0]q
[r5]int loo1
[r5-LoopBack1]ip add 192.168.1.1 24
[r5-LoopBack1]int loo2
[r5-LoopBack2]ip add 192.168.2.1 24
[r5-LoopBack2]int loo3
[r5-LoopBack3]ip add 192.168.3.1 24
[r5-LoopBack3]q
[r5]isis 100
[r5-isis-100]im
[r5-isis-100]import-route di
[r5-isis-100]import-route direct
[r5-isis-100]

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