策略路由
拓扑
技术部走电信宽带，商务部走联通宽带。LSW1做核心，充当网关，若此处只有二层交换机，用路由器当网关（路由器当网关看上一篇）。
LSW2
#
vlan batch 10 20
#
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 10 20
#
interface GigabitEthernet0/0/2
port link-type access
port default vlan 10
#
interface GigabitEthernet0/0/3
port link-type access
port default vlan 20
#
LSW1
#
vlan batch 10 20 30
#
interface Vlanif10
ip address 192.168.10.254 255.255.255.0
dhcp select interface
dhcp server dns-list 223.5.5.5
#
interface Vlanif20
ip address 192.168.20.254 255.255.255.0
dhcp select interface
dhcp server dns-list 223.5.5.5
#
interface Vlanif30
ip address 192.168.30.254 255.255.255.0
#
interface MEth0/0/1
#
interface GigabitEthernet0/0/1
port link-type access
port default vlan 30
#
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10 20
#
ip route-static 0.0.0.0 0.0.0.0 192.168.30.1
#
R1
#
acl number 2000
rule 5 permit source 192.168.10.0 0.0.0.255
rule 10 permit source 192.168.20.0 0.0.0.255
#
acl number 2100
rule 5 permit source 192.168.10.0 0.0.0.255
#
acl number 2200
rule 5 permit source 192.168.20.0 0.0.0.255
#
interface GigabitEthernet0/0/0
ip address 192.168.30.1 255.255.255.0
ip policy-based-route liantong
#
interface GigabitEthernet0/0/1
ip address 1.1.1.2 255.255.255.0
nat outbound 2000
#
interface GigabitEthernet0/0/2
ip address 2.1.1.2 255.255.255.0
nat outbound 2000
#
ip route-static 100.1.1.0 255.255.255.0 1.1.1.1
ip route-static 100.1.1.0 255.255.255.0 2.1.1.1
ip route-static 192.168.0.0 255.255.0.0 192.168.30.254
#
policy-based-route dianxin permit node 10
if-match acl 2100
apply ip-address next-hop 1.1.1.1
policy-based-route liantong permit node 10
if-match acl 2200
apply ip-address next-hop 2.1.1.1
#
R2
#
interface GigabitEthernet0/0/0
ip address 1.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
ip address 2.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
ip address 100.1.1.254 255.255.255.0
#
interface GigabitEthernet0/0/3
#
ip route-static 0.0.0.0 0.0.0.0 2.1.1.2
ip route-static 0.0.0.0 0.0.0.0 1.1.1.2
#
过程中遇到的问题
类似本实验如果有两条宽带出口，可以写两条指向外网的缺省静态路由，只需要把其中一条的优先级改一下（默认优先级60，越小越优先），默认就先走高优先级线路（具体表现在路由表默认路由变成一条）。
配置策略路由前
配置策略路由后
MQC
流分类
[router]traffic classifier jishu
[router-classifier-jishu]if-match acl 2100
[router-classifier-jishu]quit
[router]traffic classifier shangwu
[router-classifier-shangwu]if-match acl 2200
[router-classifier-shangwu]quit
流行为
[router]traffic behavior dianxin
[router-behavior-dianxin]redirect ip-nexthop 1.1.1.1
[router-behavior-dianxin]quit
[router]traffic behavior liantong
[router-behavior-liantong]redirect ip-nexthop 2.1.1.1
[router-behavior-liantong]quit
流策略
把流分类和流行为绑定
[router]traffic policy policy_1
[router-trafficpolicy-policy_1]classifier jishu behavior dianxin
[router-trafficpolicy-policy_1]classifier shangwu behavior liantong
[router-trafficpolicy-policy_1]quit
在入接口应用
[router]int g0/0/0
[router-GigabitEthernet0/0/0]traffic-policy policy_1 inbound
