帧中继（FR交换机环境）配置
帧中继 FR交换机 PVC RIPOSPF
·
1、学习目标
- 掌握在存在Frame Relay交换机的情况下，配置FR路由器接口的方法
- 掌握在Hub-and-spoke模式下，RIP的配置方法
- 掌握在Hub-and-spoke模式下，OSPF的配置方法
- 掌握OSPF在配置成Point-to-multipoint模式下的FR接口的配置方法
2、拓扑图和场景说明
场景：公司的总部有一台路由器R1，R2和R3分别是其他两个分部的路路由器。现在需要将总部和分部进行互联。广域网链路上使用帧中继方式进行网络互联，Hub-and-spoke模式。
3、基本配置与IP编址
3.1 配置地址等信息
在配置帧中继封装时，需要关闭Inarp功能，手动定义PVC的DLCI号码与IP地址的映射关系
- R1 路由器配置
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]interface Serial4/0/0
[R1-Serial4/0/0]link-protocol fr
Warning: The encapsulation protocol of the link will be changed. Continue? [Y/N]
:y
Jul 9 2024 14:34:31-08:00 R1 %%01IFNET/4/CHANGE_ENCAP(l)[0]:The user performed
the configuration that will change the encapsulation protocol of the link and th
en selected Y.
[R1-Serial4/0/0]ip address 10.0.123.1 24
[R1-Serial4/0/0]undo fr inarp
[R1-Serial4/0/0]fr map ip 10.0.123.2 102 broadcast
[R1-Serial4/0/0]fr map ip 10.0.123.3 103 broadcast
[R1-Serial4/0/0]
[R1-Serial4/0/0]quit
[R1]interface LoopBack0
[R1-LoopBack0]ip address 10.0.1.1 24
[R1-LoopBack0]
- R2 路由器配置
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R2
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]link-protocol fr
Warning: The encapsulation protocol of the link will be changed. Continue? [Y/N]
:y
Jul 9 2024 14:39:26-08:00 R2 %%01IFNET/4/CHANGE_ENCAP(l)[0]:The user performed
the configuration that will change the encapsulation protocol of the link and th
en selected Y.
[R2-Serial4/0/0]ip address 10.0.123.2 24
[R2-Serial4/0/0]undo fr inarp
[R2-Serial4/0/0]fr map ip 10.0.123.1 201 broadcast
[R2-Serial4/0/0]quit
[R2]interface LoopBack0
[R2-LoopBack0]ip address 10.0.2.2 24
[R2-LoopBack0]
- R3 路由器配置
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R3
[R3]interface Serial4/0/0
[R3-Serial4/0/0]link-protocol fr
Warning: The encapsulation protocol of the link will be changed. Continue? [Y/N]
:y
Jul 9 2024 14:41:32-08:00 R3 %%01IFNET/4/CHANGE_ENCAP(l)[0]:The user performed
the configuration that will change the encapsulation protocol of the link and th
en selected Y.
[R3-Serial4/0/0]
[R3-Serial4/0/0]ip address 10.0.123.3 24
[R3-Serial4/0/0]undo fr inarp
[R3-Serial4/0/0]fr map ip 10.0.123.1 301 broadcast
[R3-Serial4/0/0]quit
[R3]interface LoopBack0
[R3-LoopBack0]ip address 10.0.3.3 24
[R3-LoopBack0]
3.2、测试网络的连通性
<R1>ping 10.0.123.2
PING 10.0.123.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.123.2: bytes=56 Sequence=1 ttl=255 time=20 ms
Reply from 10.0.123.2: bytes=56 Sequence=2 ttl=255 time=30 ms
Reply from 10.0.123.2: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 10.0.123.2: bytes=56 Sequence=4 ttl=255 time=20 ms
Reply from 10.0.123.2: bytes=56 Sequence=5 ttl=255 time=30 ms
--- 10.0.123.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 20/24/30 ms
<R1>ping 10.0.123.3
PING 10.0.123.3: 56 data bytes, press CTRL_C to break
Reply from 10.0.123.3: bytes=56 Sequence=1 ttl=255 time=20 ms
Reply from 10.0.123.3: bytes=56 Sequence=2 ttl=255 time=20 ms
Reply from 10.0.123.3: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 10.0.123.3: bytes=56 Sequence=4 ttl=255 time=20 ms
Reply from 10.0.123.3: bytes=56 Sequence=5 ttl=255 time=10 ms
--- 10.0.123.3 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 10/18/20 ms
<R1>
3.3、查看R1接口帧中继封装信息
[R1]display fr interface Serial 4/0/0
Serial4/0/0, DTE, physical up, protocol up
[R1]display fr map-info interface Serial 4/0/0
Map Statistics for interface Serial4/0/0 (DTE)
DLCI = 102, IP 10.0.123.2, Serial4/0/0
create time = 2024/07/09 14:34:59, status = ACTIVE
encapsulation = ietf, vlink = 1, broadcast
DLCI = 103, IP 10.0.123.3, Serial4/0/0
create time = 2024/07/09 14:35:12, status = ACTIVE
encapsulation = ietf, vlink = 2, broadcast
[R1]
4、帧中继交换机配置
5、配置R1、R2和R3之间运行RIPv2
5.1、配置RIP协议，使用Version 2，所有网段都在RIP区域。
默认配置，不定义静态邻居。另外需要关闭自动汇总。同时需要注意的是，由于帧中继网络的特殊性，默认情况下，帧中继接口RIP的水平分割功能被关闭。实验中，不对水平分割进行修改。
[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 10.0.0.0
[R1-rip-1]undo summary
[R1-rip-1]
[R2]rip 1
[R2-rip-1]version 2
[R2-rip-1]network 10.0.0.0
[R2-rip-1]undo summary
[R2-rip-1]
[R3]rip 1
[R3-rip-1]version 2
[R3-rip-1]network 10.0.0.0
[R3-rip-1]undo summary
[R3-rip-1]
5.2、在R1、R2、R3上分别查看路由表，确认路由信息学习的结果
[R1]display ip routing-table protocol rip
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : RIP
Destinations : 2 Routes : 2
RIP routing table status : <Active>
Destinations : 2 Routes : 2
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.2.0/24 RIP 100 1 D 10.0.123.2 Serial4/0/0
10.0.3.0/24 RIP 100 1 D 10.0.123.3 Serial4/0/0
RIP routing table status : <Inactive>
Destinations : 0 Routes : 0
[R1]
[R2]display ip routing-table protocol rip
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : RIP
Destinations : 2 Routes : 2
RIP routing table status : <Active>
Destinations : 2 Routes : 2
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.123.1 Serial4/0/0
10.0.3.0/24 RIP 100 2 D 10.0.123.1 Serial4/0/0
RIP routing table status : <Inactive>
Destinations : 0 Routes : 0
[R2]
[R3]display ip routing-table protocol rip
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : RIP
Destinations : 2 Routes : 2
RIP routing table status : <Active>
Destinations : 2 Routes : 2
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.123.1 Serial4/0/0
10.0.2.0/24 RIP 100 2 D 10.0.123.1 Serial4/0/0
RIP routing table status : <Inactive>
Destinations : 0 Routes : 0
[R3]
5.3、在R3上连通性测试
[R3]ping 10.0.1.1
PING 10.0.1.1: 56 data bytes, press CTRL_C to break
Reply from 10.0.1.1: bytes=56 Sequence=1 ttl=255 time=20 ms
Reply from 10.0.1.1: bytes=56 Sequence=2 ttl=255 time=30 ms
Reply from 10.0.1.1: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 10.0.1.1: bytes=56 Sequence=4 ttl=255 time=30 ms
Reply from 10.0.1.1: bytes=56 Sequence=5 ttl=255 time=30 ms
--- 10.0.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 20/26/30 ms
[R3]ping 10.0.2.2
PING 10.0.2.2: 56 data bytes, press CTRL_C to break
Request time out
Request time out
Request time out
Request time out
Request time out
--- 10.0.2.2 ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
[R3]
5.4、确定R3不能与R2通讯的原因
5.4.1、观察R3路由表，查看是否有达到10.0.2.2地址的路由（有路由）
[R3]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 13 Routes : 13
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.123.1 Serial4/0/0
10.0.2.0/24 RIP 100 2 D 10.0.123.1 Serial4/0/0
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.123.0/24 Direct 0 0 D 10.0.123.3 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.3/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R3]
5.4.2、查看该路由下一跳是哪个IP地址，该地址R3是否可达，是否存在对应的三层IP地址和二层PVC的对应关系（可达，存在对应关系）
[R3]display fr map-info interface Serial 4/0/0
Map Statistics for interface Serial4/0/0 (DTE)
DLCI = 301, IP 10.0.123.1, Serial4/0/0
create time = 2024/07/09 14:41:56, status = ACTIVE
encapsulation = ietf, vlink = 1, broadcast
[R3]
5.4.3、查看沿路设备，是否有可达10.0.2.2地址的路由以及路由的下一跳是否可达，是否存在三层IP地址和二层PVC的对应关系（可达，存在对应关系）
[R1]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.123.2 Serial4/0/0
10.0.3.0/24 RIP 100 1 D 10.0.123.3 Serial4/0/0
10.0.123.0/24 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.2/32 Direct 0 0 D 10.0.123.2 Serial4/0/0
10.0.123.3/32 Direct 0 0 D 10.0.123.3 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R1]
[R1]display fr map-info interface Serial 4/0/0
Map Statistics for interface Serial4/0/0 (DTE)
DLCI = 102, IP 10.0.123.2, Serial4/0/0
create time = 2024/07/09 14:34:59, status = ACTIVE
encapsulation = ietf, vlink = 1, broadcast
DLCI = 103, IP 10.0.123.3, Serial4/0/0
create time = 2024/07/09 14:35:12, status = ACTIVE
encapsulation = ietf, vlink = 2, broadcast
[R1]
5.4.4、查看目标设备，是否有达到回应的数据包目标地址的路由，以及下一跳是否可达（不可达，回应数据包的目标地址是10.0.123.3，R2上存在达到该地址的路由，但是不存在对应的三层IP地址和二层PVC的对应关系）
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 13 Routes : 13
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.123.1 Serial4/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.0/24 RIP 100 2 D 10.0.123.1 Serial4/0/0
10.0.123.0/24 Direct 0 0 D 10.0.123.2 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.2/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R2]display fr map-info interface Serial 4/0/0
Map Statistics for interface Serial4/0/0 (DTE)
DLCI = 201, IP 10.0.123.1, Serial4/0/0
create time = 2024/07/09 14:39:53, status = ACTIVE
encapsulation = ietf, vlink = 1, broadcast
[R2]
故障定位在R2和R3的帧中继接口之间缺少虚电路。
6、调整网络参数，实现R2和R3的连通性
6.1、配置IP地址和PVC的对应关系，使R2和R3帧中继接口之间的通讯通过R1来实现。
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]fr map ip 10.0.123.3 201 broadcast
[R2-Serial4/0/0]
[R3]interface Serial 4/0/0
[R3-Serial4/0/0]fr map ip 10.0.123.2 301 broadcast
[R3-Serial4/0/0]
6.2、完成后查看R2和R3上IP和PVC的映射关系表，并测试网络连通性
[R3]display fr map-info interface Serial 4/0/0
Map Statistics for interface Serial4/0/0 (DTE)
DLCI = 301, IP 10.0.123.1, Serial4/0/0
create time = 2024/07/09 14:41:56, status = ACTIVE
encapsulation = ietf, vlink = 1, broadcast
DLCI = 301, IP 10.0.123.2, Serial4/0/0
create time = 2024/07/10 09:02:51, status = ACTIVE
encapsulation = ietf, vlink = 2, broadcast
[R3]ping 10.0.2.2
PING 10.0.2.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.2.2: bytes=56 Sequence=1 ttl=254 time=20 ms
Reply from 10.0.2.2: bytes=56 Sequence=2 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=3 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=4 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=5 ttl=254 time=30 ms
--- 10.0.2.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 20/28/30 ms
[R3]
7、配置R1与R2之间的运行OSPF
7.1、删除RIP的配置，删除R2和R3在步骤三建立的IP与PVC的映射关系
[R1]undo rip 1
Warning: The RIP process will be deleted. Continue?[Y/N]y
[R1]
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]undo fr map ip 10.0.123.3 201
[R2-Serial4/0/0]quit
[R2]undo rip 1
Warning: The RIP process will be deleted. Continue?[Y/N]y
[R2]
[R3]interface Serial 4/0/0
[R3-Serial4/0/0]undo fr map ip 10.0.123.2 301
[R3-Serial4/0/0]quit
[R3]undo rip 1
Warning: The RIP process will be deleted. Continue?[Y/N]y
[R3]
7.2、在R1、R2和R3上配置单区域OSPF
[R1]ospf 1 router-id 10.0.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.255
[R1-ospf-1-area-0.0.0.0]
[R2]ospf 1 router-id 10.0.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.255
[R2-ospf-1-area-0.0.0.0]
[R3]ospf 1 router-id 10.0.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]
7.3、基本配置完成后，OSPF无法建立邻居关系，原因是OSPF认为帧中继网络默认认为是NBMA网络，不支持广播，不自动发现邻居
[R3]display ospf interface Serial 4/0/0 verbose
OSPF Process 1 with Router ID 10.0.3.3
Interfaces
Interface: 10.0.123.3 (Serial4/0/0)
Cost: 48 State: DR Type: NBMA MTU: 1500
Priority: 1
Designated Router: 10.0.123.3
Backup Designated Router: 0.0.0.0
Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1
IO Statistics
Type Input Output
Hello 0 0
DB Description 0 0
Link-State Req 0 0
Link-State Update 0 0
Link-State Ack 0 0
OpaqueId: 0 PrevState: Waiting
Effective cost: 48, enabled by OSPF Protocol
[R3]
对于帧中继网络上运行OSPF，有多种解决方法，本次实验中介绍将接口的OSPF网络类型定义为Point-to-multipoint的方法来实现。
8、配置接口的OSPF网络类型为Point-to-multipoint
8.1、配置接口的OSPF网络类型为point-to-multipoint
[R1]interface Serial 4/0/0
[R1-Serial4/0/0]ospf network-type p2mp
[R1-Serial4/0/0]
[R2]interface Serial 4/0/0
[R2-Serial4/0/0]ospf network-type p2mp
[R2-Serial4/0/0]
[R3]interface Serial 4/0/0
[R3-Serial4/0/0]ospf network-type p2mp
[R3-Serial4/0/0]
8.2、配置完成后，稍等片刻，待邻居关系建立。查看邻居关系及路由信息
- 查看R1路由器
[R1]display ospf peer brief
OSPF Process 1 with Router ID 10.0.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial4/0/0 10.0.2.2 Full
0.0.0.0 Serial4/0/0 10.0.3.3 Full
----------------------------------------------------------------------------
[R1]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.1.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.2/32 OSPF 10 48 D 10.0.123.2 Serial4/0/0
10.0.3.3/32 OSPF 10 48 D 10.0.123.3 Serial4/0/0
10.0.123.0/24 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.2/32 Direct 0 0 D 10.0.123.2 Serial4/0/0
10.0.123.3/32 Direct 0 0 D 10.0.123.3 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R1]
- 查看R2路由器
[R2]display ospf peer brief
OSPF Process 1 with Router ID 10.0.2.2
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial4/0/0 10.0.1.1 Full
----------------------------------------------------------------------------
[R2]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.1/32 OSPF 10 48 D 10.0.123.1 Serial4/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.3/32 OSPF 10 96 D 10.0.123.1 Serial4/0/0
10.0.123.0/24 Direct 0 0 D 10.0.123.2 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.2/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.3/32 OSPF 10 96 D 10.0.123.1 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R2]
- 查看R3路由器
[R3]display ospf peer brief
OSPF Process 1 with Router ID 10.0.3.3
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial4/0/0 10.0.1.1 Full
----------------------------------------------------------------------------
[R3]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.1/32 OSPF 10 48 D 10.0.123.1 Serial4/0/0
10.0.2.2/32 OSPF 10 96 D 10.0.123.1 Serial4/0/0
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.123.0/24 Direct 0 0 D 10.0.123.3 Serial4/0/0
10.0.123.1/32 Direct 0 0 D 10.0.123.1 Serial4/0/0
10.0.123.2/32 OSPF 10 96 D 10.0.123.1 Serial4/0/0
10.0.123.3/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
10.0.123.255/32 Direct 0 0 D 127.0.0.1 Serial4/0/0
127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0
[R3]
8.3、在R3上测试网络连通性
[R3]ping 10.0.1.1
PING 10.0.1.1: 56 data bytes, press CTRL_C to break
Reply from 10.0.1.1: bytes=56 Sequence=1 ttl=255 time=40 ms
Reply from 10.0.1.1: bytes=56 Sequence=2 ttl=255 time=20 ms
Reply from 10.0.1.1: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 10.0.1.1: bytes=56 Sequence=4 ttl=255 time=20 ms
Reply from 10.0.1.1: bytes=56 Sequence=5 ttl=255 time=10 ms
--- 10.0.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 10/22/40 ms
[R3]ping 10.0.2.2
PING 10.0.2.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.2.2: bytes=56 Sequence=1 ttl=254 time=40 ms
Reply from 10.0.2.2: bytes=56 Sequence=2 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=3 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=4 ttl=254 time=30 ms
Reply from 10.0.2.2: bytes=56 Sequence=5 ttl=254 time=30 ms
--- 10.0.2.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/32/40 ms
[R3]ping 10.0.123.2
PING 10.0.123.2: 56 data bytes, press CTRL_C to break
Reply from 10.0.123.2: bytes=56 Sequence=1 ttl=254 time=30 ms
Reply from 10.0.123.2: bytes=56 Sequence=2 ttl=254 time=30 ms
Reply from 10.0.123.2: bytes=56 Sequence=3 ttl=254 time=40 ms
Reply from 10.0.123.2: bytes=56 Sequence=4 ttl=254 time=30 ms
Reply from 10.0.123.2: bytes=56 Sequence=5 ttl=254 time=30 ms
--- 10.0.123.2 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/32/40 ms
[R3]
9、参考文献
《HCDA中文实验手册》
https://developer.aliyun.com/article/604826
https://blog.csdn.net/csdn_763871244/article/details/105642103
https://www.cnblogs.com/gd-hn-mzh/p/16796671.html
https://blog.csdn.net/annita2019/article/details/109207053
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