1、实验拓扑图
2、实验目标
全网配置部署运行ospf路由协议，在关键节点上配置frr（fast reroute），当AR2节点或链路出现故障后，迅速切换到AR4，链路中没有数据丢失
3、实验配置
R1
<r1>display current-configuration
[V200R003C00]
#
sysname r1
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
bfd
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 10.1.1.1 255.255.255.0
ospf cost 5
#
interface GigabitEthernet0/0/1
ip address 30.1.1.1 255.255.255.0
ospf cost 10
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
#
ospf 100 router-id 1.1.1.1
bfd all-interfaces enable
bfd all-interfaces min-tx-interval 100 min-rx-interval 100
frr
loop-free-alternate
area 0.0.0.0
network 10.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
idle-timeout 0 0
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r1>
R2
<r2>display current-configuration
[V200R003C00]
#
sysname r2
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
bfd
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 10.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 20.1.1.1 255.255.255.0
ospf cost 5
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
ospf 100 router-id 2.2.2.2
bfd all-interfaces enable
bfd all-interfaces min-tx-interval 100 min-rx-interval 100
area 0.0.0.0
network 10.1.1.0 0.0.0.255
network 20.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
idle-timeout 0 0
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r2>
R3
<r3>display current-configuration
[V200R003C00]
#
sysname r3
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
bfd
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 20.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 40.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 3.3.3.3 255.255.255.255
#
ospf 100 router-id 3.3.3.3
bfd all-interfaces enable
bfd all-interfaces min-tx-interval 100 min-rx-interval 100
area 0.0.0.0
network 3.3.3.3 0.0.0.0
network 20.1.1.0 0.0.0.255
network 40.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
idle-timeout 0 0
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r3>
R4
<r4>display current-configuration
[V200R003C00]
#
sysname r4
#
snmp-agent local-engineid 800007DB03000000000000
snmp-agent
#
clock timezone China-Standard-Time minus 08:00:00
#
portal local-server load portalpage.zip
#
drop illegal-mac alarm
#
set cpu-usage threshold 80 restore 75
#
bfd
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$
local-user admin service-type http
#
firewall zone Local
priority 15
#
interface GigabitEthernet0/0/0
ip address 30.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 40.1.1.1 255.255.255.0
ospf cost 5
#
interface GigabitEthernet0/0/2
#
interface NULL0
#
interface LoopBack0
ip address 4.4.4.4 255.255.255.255
#
ospf 100 router-id 4.4.4.4
bfd all-interfaces enable
bfd all-interfaces min-tx-interval 100 min-rx-interval 100
area 0.0.0.0
network 30.1.1.0 0.0.0.255
network 40.1.1.0 0.0.0.255
#
user-interface con 0
authentication-mode password
idle-timeout 0 0
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return
<r4>
4、结果验证
