NAT負(fù)載均衡的設(shè)定驗(yàn)證
在負(fù)載均衡技術(shù)中，有一種叫做NAT負(fù)載均衡，也就是地址轉(zhuǎn)換負(fù)載均衡技術(shù)。其實(shí)，這個(gè)地址轉(zhuǎn)換我們?cè)趯W(xué)習(xí)路由和交換機(jī)的時(shí)候就應(yīng)該有所接觸，所以，概念方面的東西，在這里我們就不多說(shuō)了，還是直接把配置命令拿出來(lái)和大家一起看看。
雙WAN口NAT負(fù)載均衡
之前想實(shí)現(xiàn)同一子網(wǎng)雙WAN口NAT,意思就是所有IP都隨機(jī)從兩個(gè)端口出去還要實(shí)現(xiàn)NAT負(fù)載均衡,結(jié)果沒(méi)有成功(定義轉(zhuǎn)換關(guān)系上的問(wèn)題),這次分兩個(gè)網(wǎng)段,一個(gè)網(wǎng)段走一個(gè)WAN口,開(kāi)始不用route-map,如果不行就用route-map定義數(shù)據(jù)流｡
R_2
接口啟用NAT
int s2/0
ip nat outside
ip nat enable
int s2/1
ip nat outside
ip nat enable
int s2/2
ip nat inside
ip nat enable
Exit
定義數(shù)據(jù)流
access-list 100 permit ip 192.168.1.0 0.0.0.255 any
access-list 101 permit ip 192.168.2.0 0.0.0.255 any
策略路由部分,把相應(yīng)的數(shù)據(jù)流轉(zhuǎn)到相應(yīng)接口
route-map multi-wan permit 100
match ip address 100
set interface s2/0
exit
route-map multi-wan permit 101
match ip add 101
set interface s2/1
exit
int s2/2
ip policy route-map multi-wan
Exit
下面這些有些故弄玄虛了,寫(xiě)NAT負(fù)載均衡策略圖有點(diǎn)多此一舉
route-map wan-100 permit 100
match ip add 100
exit
route-map wan-101 permit 101
match ip add 101
Exit
把下面兩條命令的route-map wan-100 和wan-101相應(yīng)的換成list 100 和list 101就可以了,事實(shí)證明參考網(wǎng)絡(luò)上的NAT負(fù)載均衡知識(shí)并不是總是最有用的｡
ip nat inside source route-map wan-100 interface s2/0 overload
ip nat inside source route-map wan-101 interface s2/1 overload
