非等价负载均衡
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 目的：
让
让25.0.0.0/24到
因为默认状态下跌幅：R5－R2－R1－R4
第一步：全网互通
R5#traceroute
Protocol [ip]:
Target IP address:
Source address:
Numeric display [n]:
Timeout in seconds [3]:
Probe count [3]:
Minimum Time to Live [1]:
Maximum Time to Live [30]:
Port Number [33434]:
Loose, Strict, Record, Timestamp,
Verbose[none]:
Type escape sequence to abort.
Tracing the route to
1 25.0.0.2 168 msec 216 msec 144 msec
2
3
R5#traceroute
Protocol [ip]:
Target IP address:
Source address: 25.0.0.5
Numeric display [n]:
Timeout in seconds [3]:
Probe count [3]:
Minimum Time to Live [1]:
Maximum Time to Live [30]:
Port Number [33434]:
Loose, Strict, Record, Timestamp,
Verbose[none]:
Type escape sequence to abort.
Tracing the route to
1 25.0.0.2 144 msec
120 msec
2
3
第二步：用route-map在R2上做非等价负载均衡
R2(config)#access-list 1 permit 25.0.0.5
R2(config)#route-map PBR permit 10
R2(config-route-map)#match ip add 1
R2(config-route-map)#set ip next-ho
R2(config)#route-map PBR permit 20
R2(config)#
R2(config)#
R2(config)#int f 0/0
R2(config-if)#ip policy route-map PBR
第三步：在R2是查看配制
R2#sh ip policy
Interface Route map
Fa0/0 PBR
R2#sh access-lists
Standard IP access list 1
10 permit 25.0.0.5
R2#sh route-map
route-map PBR, permit, sequence 10
Match clauses:
ip address (access-lists): 1
Set
clauses:
ip next-ho
Policy routing matches: 0 packets, 0 bytes
route-map PBR, permit, sequence 20
Match clauses:
Set
clauses:
Policy routing matches: 0 packets, 0 bytes
第四步：用traceroute命令进行测试
R5#traceroute
Protocol [ip]:
Target IP address:
Source address:
Numeric display [n]:
Timeout in seconds [3]:
Probe count [3]:
Minimum Time to Live [1]:
Maximum Time to Live [30]:
Port Number [33434]:
Loose, Strict, Record, Timestamp,
Verbose[none]:
Type escape sequence to abort.
Tracing the route to
1 25.0.0.2 136 msec 132 msec 156 msec
2
3
R5#traceroute
Protocol [ip]:
Target IP address:
Source address: 25.0.0.5
Numeric display [n]:
Timeout in seconds [3]:
Probe count [3]:
Minimum Time to Live [1]:
Maximum Time to Live [30]:
Port Number [33434]:
Loose, Strict, Record, Timestamp,
Verbose[none]:
Type escape sequence to abort.
Tracing the route to
1 25.0.0.2 216 msec 144 msec 144 msec
2
3 34.0.0.4 384 msec * 456 msec
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