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(wǎng)絡互聯(lián)解決方案的領先廠商，其公司出產(chǎn)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(shù)據(jù)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(jù)需要走一條特殊的路徑。
在網(wǎng)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(shù)據(jù)流選擇經(jīng)過不同的Internet連接。
2、服務質量：可以通過在網(wǎng)絡邊緣路由器上設置IP數(shù)據(jù)包包頭中的優(yōu)先級或TOS值，并利用隊列機制在網(wǎng)絡核心或主干中為數(shù)據(jù)流劃分不同的優(yōu)先級，來為不同的數(shù)據(jù)流提供不同級別的QoS。
3、負載均衡：網(wǎng)絡管理員可以通過策略路由在多條路徑上分發(fā)數(shù)據(jù)流。
4、網(wǎng)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(wǎng)，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(wǎng)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(xiàn)基于源的供應商鏈路選擇和網(wǎng)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(wǎng)一：192.168.1.0/24
ip address 192.168.1.1 255.255.255.0 //模擬子網(wǎng)中第一臺主機
ip address 192.168.1.2 255.255.255.0 secondary //模擬子網(wǎng)中第二臺主機
!
interface Loopback2 //模擬子網(wǎng)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(wǎng)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(wǎng)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(wǎng)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(diào)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(wǎng)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(wǎng)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(wǎng)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(wǎng)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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