如图：实现 要求：
1、当流量正常时PC1---LSW1----FW1----LSP_CNCC(lo0)；PC2---LSW1----FW1----LSP_CMCC(lo0)

2、当LSP_CNCC(lo0)挂掉时；PC1与CP2流量全部切换至LSP_CMCC(lo0)反之当LSP_CMCC(lo0)挂掉时；PC1与CP2流量全部切换至LSP_CNCC(lo0)

3、注意配置ACL中deny意思为当实行内部网段通信时不匹配策略，如匹配策略的话，就会进行NAT导致内部通信中断！

4、实际案例中根据实际情况去绑定检测机制如NQA，BFD等实现更快去检测链路故障实现流量的切换保证流量可达性！

华为USG双出口冗余_第1张图片

FW1配置：
dis current-configuration
23:04:18 2017/07/12
#
stp region-configuration
region-name e81582044529
active region-configuration
#
acl number 3000
rule 2 deny ip destination 192.168.20.0 0.0.0.255 //实现内部通信，不让其匹配策略！
rule 5 permit ip source 192.168.10.0 0.0.0.255
rule 10 deny ip
#
acl number 3001
rule 2 deny ip destination 192.168.10.0 0.0.0.255
rule 5 permit ip source 192.168.20.0 0.0.0.255
rule 10 deny ip
#
interface GigabitEthernet0/0/0
alias GE0/MGMT
ip address 192.168.0.1 255.255.255.0
dhcp select interface
dhcp server gateway-list 192.168.0.1
#
interface GigabitEthernet0/0/1
ip address 210.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 220.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/3
#
interface GigabitEthernet0/0/4
#
interface GigabitEthernet0/0/5
#
interface GigabitEthernet0/0/6
#
interface GigabitEthernet0/0/7
#
interface GigabitEthernet0/0/8
#
interface GigabitEthernet0/0/8.10
vlan-type dot1q 10
alias GigabitEthernet0/0/8.10
ip address 192.168.10.254 255.255.255.0
ip policy-based-route 10
#
interface GigabitEthernet0/0/8.20
vlan-type dot1q 20
alias GigabitEthernet0/0/8.20
ip address 192.168.20.254 255.255.255.0
ip policy-based-route 10
#
interface NULL0
alias NULL0
#
firewall zone local
set priority 100
#
firewall zone trust
set priority 85
add interface GigabitEthernet0/0/0
add interface GigabitEthernet0/0/8
add interface GigabitEthernet0/0/8.10
add interface GigabitEthernet0/0/8.20
#
firewall zone untrust
set priority 5
#
firewall zone dmz
set priority 50
#
firewall zone name cncc
set priority 10
add interface GigabitEthernet0/0/1
#
firewall zone name cmcc
set priority 15
add interface GigabitEthernet0/0/2
#
aaa
local-user admin password cipher %$%$q4o'Iu\Qr<9uB!;*(9\WYvmd%$%$
local-user admin service-type web terminal telnet
local-user admin level 15
authentication-scheme default
#
authorization-scheme default
#
accounting-scheme default
#
domain default
#
#
nqa-jitter tag-version 1

#
ip route-static 0.0.0.0 0.0.0.0 210.1.1.2
ip route-static 0.0.0.0 0.0.0.0 220.1.1.2
#
banner enable
#
user-interface con 0
authentication-mode none
user-interface vty 0 4
authentication-mode none
protocol inbound all
#
policy-based-route 10 permit node 10 //配置两个网段的流量走向！
if-match acl 3000
apply ip-address next-hop 210.1.1.2
policy-based-route 10 permit node 20
if-match acl 3001
apply ip-address next-hop 220.1.1.2
#
slb
#
right-manager server-group
#
sysname SRG
#
domain suffix-separator @
#
firewall packet-filter default permit interzone local trust direction inbound
firewall packet-filter default permit interzone local trust direction outbound
firewall packet-filter default permit interzone local untrust direction outbound
firewall packet-filter default permit interzone local dmz direction outbound
firewall packet-filter default permit interzone local cncc direction outbound
firewall packet-filter default permit interzone local cmcc direction outbound
#
ip df-unreachables enable
#
firewall ipv6 session link-state check
firewall ipv6 statistic system enable
#
dns resolve
#
firewall statistic system enable
#
pki ocsp response cache refresh interval 0
pki ocsp response cache number 0
#
undo dns proxy
#
license-server domain lic.huawei.com
#
web-manager enable
#
policy interzone trust cncc outbound //放行流量从CNCC出去！
policy 0
action permit
policy source 192.168.10.0 mask 24
policy source 192.168.20.0 mask 24
#
policy interzone trust cmcc outbound //放行流量从CMCC出去！
policy 0
action permit
policy source 192.168.10.0 mask 24
policy source 192.168.20.0 mask 24
#
nat-policy interzone trust cncc outbound //做cncc端的地址转换
policy 0
action source-nat
policy source 192.168.10.0 mask 24
policy source 192.168.20.0 mask 24
easy-ip GigabitEthernet0/0/1
#
nat-policy interzone trust cmcc outbound //做cmcc端的地址转换
policy 0
description isthis
action source-nat
policy source 192.168.10.0 mask 24
policy source 192.168.20.0 mask 24
easy-ip GigabitEthernet0/0/2
#
return

SW1配置：
dis current-configuration
#
sysname SW1
#
vlan batch 10 20
#
interface Ethernet0/0/1
port link-type access
port default vlan 10
#
interface Ethernet0/0/2
port link-type access
port default vlan 20
#
interface Ethernet0/0/3
description sithos
port link-type trunk
port trunk allow-pass vlan 2 to 4094

LSP_CNCC配置：

dis current-configuration
[V200R003C00]
#
sysname CNCC
#
interface GigabitEthernet0/0/0
#
interface GigabitEthernet0/0/1
ip address 210.1.1.2 255.255.255.0
#
interface NULL0
#
interface LoopBack0
ip address 100.100.100.100 255.255.255.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return

LSP_CMCC配置：
dis current-configuration
[V200R003C00]
#
sysname cmcc
#
interface GigabitEthernet0/0/1
ip address 220.1.1.2 255.255.255.0
#
interface NULL0
#
interface LoopBack0
ip address 100.100.100.100 255.255.255.255
#
user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20
#
wlan ac
#
return

验证流量走向是否正确？

PC1流量走向 （正确）

华为USG双出口冗余_第2张图片

PC2流量走向（正确）

华为USG双出口冗余_第3张图片

当LSP_CNCC挂时；关掉USG g0/0/1（流量实现切换；地址已由210--220）
华为USG双出口冗余_第4张图片