怎么設置Cisco路由多鏈路負載均衡
思科公司已成為公認的全世界網絡互聯解決方案的領先廠商，其公司出產的一系列路由器更是引領世界，那么你知道怎么設置Cisco路由多鏈路負載均衡嗎?下面是學習啦小編整理的一些關于怎么設置Cisco路由多鏈路負載均衡的相關資料，供你參考。
設置Cisco路由多鏈路負載均衡的方法
基于策略的路由允許應用一個策略控制數據包應如何走而非基于路由表選路。IP路由基于目標地，而PBR允許基于源的路由，即來自何處而應到哪去，從而根據需要走一條特殊的路徑。
在網絡中實施基于策略的路由有以下優(yōu)點
1、基于源的供應商選擇：通過策略路由使源于不同用戶組的數據流選擇經過不同的Internet連接。
2、服務質量：可以通過在網絡邊緣路由器上設置IP數據包包頭中的優(yōu)先級或TOS值，并利用隊列機制在網絡核心或主干中為數據流劃分不同的優(yōu)先級，來為不同的數據流提供不同級別的QoS。
3、負載均衡：網絡管理員可以通過策略路由在多條路徑上分發(fā)數據流。
4、網絡管理更加靈活。
雙出口配置實例
(一)實驗拓樸
(二)實驗要求
1、R1連接本地子網，R2為邊緣策略路由器，R3模擬雙ISP接入的Internet環(huán)境。
2、要求R1所連接的局域網部分流量走R2-R3間上條鏈路(ISP1鏈路)，部分流量走R2-R3間下條鏈路(ISP2鏈路)從而實現基于源的供應商鏈路選擇和網絡負載均衡。
(三)各路由器配置如下
R1#sh run //路由器R1的配置
……
interface Loopback0 //模擬子網一：192.168.1.0/24
ip address 192.168.1.1 255.255.255.0 //模擬子網中第一臺主機
ip address 192.168.1.2 255.255.255.0 secondary //模擬子網中第二臺主機
!
interface Loopback2 //模擬子網二：192.168.2.0/24
ip address 192.168.2.1 255.255.255.0
ip address 192.168.2.2 255.255.255.0 secondary
!
interface FastEthernet0/0
ip address 12.0.0.1 255.255.255.0
duplex half
!
……
!
router rip //通過RIP協(xié)議配置網絡的連通性
version 2
network 192.168.1.0
network 192.168.1.0
network 12.0.0.0
……
end
-----------------------------
R3#sh run //路由器R3的配置
Building configuration...
……
interface Loopback0 //模擬一個連接目標
description to internet
ip address 100.100.100.100 255.255.255.0
!
interface Serial1/1 //模擬ISP1的接入端口
ip address 123.0.0.3 255.255.255.0
serial restart-delay 0
!
……
interface Serial1/3 //模擬ISP2的接入端口
ip address 223.0.0.3 255.255.255.0
serial restart-delay 0
!
router rip
version 2
network 100.0.0.0
network 123.0.0.0
network 223.0.0.0
no auto-summary
!
……
end
---------------------------------------------------------------------------------
R2#sh run //策略路由器R2的配置
Building configuration...
……
interface FastEthernet0/0
ip address 12.0.0.2 255.255.255.0
ip policy route-map isp-test //在接口上啟用策略路由isp-test進行流量控制
duplex half
!
……
interface Serial1/1
ip address 123.0.0.1 255.255.255.0
serial restart-delay 0
!
interface Serial1/3
ip address 223.0.0.1 255.255.255.0
serial restart-delay 0
……
router rip
version 2
network 12.0.0.0
network 123.0.0.0
network 223.0.0.0
no auto-summary
……
logging alarm informational
access-list 101 permit ip 192.168.1.0 0.0.0.255 host 100.100.100.100 //訪問控制列表101，用于過濾原地址，允許子網192.168.1.0流量通過 */
access-list 102 permit ip 192.168.2.0 0.0.0.255 host 100.100.100.100 //訪問控制列表102，用于過濾原地址，允許子網192.168.2.0流量通過 */
!
route-map isp-test permit 10 //定義route-map，取名為isp-test，序列為10
match ip address 101 //檢查源地址，匹配acl 101
set ip default next-hop 123.0.0.3 //指定下一跳地址
!
route-map isp-test permit 20 //定義isp-test的第二條語句，序列號為20
match ip address 102 //檢查源地下，匹配acl102
set ip default next-hop 223.0.0.3
!
route-map isp-test permit 30 //定義isp-test的第三條語句，序列號為30
set default interface Null0 //丟棄不匹配規(guī)定標準的包
……
end
---------------------------------------------------------------------------------
(四)調試
R2#sh ip policy //顯示應用的策略
Interface Route map
Fa0/0 isp-acc
R2#sh route-map isp-test //顯示配置的路由映射圖
route-map isp-test, permit, sequence 10
Match clauses:
ip address (access-lists): 101
Set clauses:
ip default next-hop 123.0.0.3
Policy routing matches: 0 packets, 0 bytes
route-map isp-test, permit, sequence 20
Match clauses:
ip address (access-lists): 102
Set clauses:
ip default next-hop 223.0.0.3
Policy routing matches: 0 packets, 0 bytes
route-map isp-test, permit, sequence 30
Match clauses:
Set clauses:
default interface Null0
Policy routing matches: 0 packets, 0 bytes
========================================================================
R1#traceroute //路由跟蹤
Protocol [ip]: //ip流量
Target IP address: 100.100.100.100 //目標地
Source address: 192.168.1.1 //源地址為子網一的第一臺主機
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 100.100.100.100
1 12.0.0.2 72 msec 216 msec 276 msec
2 123.0.0.3 288 msec 360 msec * //ISP1入口
-------------------------------------------------------------------------------
R1# traceroute
Protocol [ip]:
Target IP address: 100.100.100.100
Source address: 192.168.1.2 //源地址為子網一的第二臺主機
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 100.100.100.100
1 12.0.0.2 92 msec 188 msec 52 msec
2 123.0.0.3 416 msec 436 msec * //ISP1入口
----------------------------------------------------------------------------------
R1#traceroute
Protocol [ip]:
Target IP address: 100.100.100.100
Source address: 192.168.2.1 //源地址為子網二的第一臺主機
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 100.100.100.100
1 12.0.0.2 136 msec 40 msec 144 msec
2 223.0.0.3 356 msec * 132 msec //ISP2入口
---------------------------------------------------------
R1#traceroute
Protocol [ip]:
Target IP address: 100.100.100.100
Source address: 192.168.2.2 //源地址為子網二中第二臺主機
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 100.100.100.100
1 12.0.0.2 28 msec 104 msec 200 msec
2 223.0.0.3 300 msec * 196 msec //ISP2入口
-----------------------------------------------------
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