</p>此时如果关闭R4的F1/1接口:此时R5再pingR4:链路是否正常?9 O# H# V4 _( Q6 f2 }2 C
【不通】:解释:route-map无法区分下一跳是否可达。但是可以结合SLA来实现:
y2 g2 m( B* W& l2 |! E* m( D% K* xip sla monitor 1
: k/ h) p1 `) z% m' ftype echo protocol ipIcmpEcho 1.1.45.4
1 J9 Q/ e, ~ }) y5 ofrequency 10+ w" L, `5 Q9 w9 [
ip sla monitor schedule 1 life forever start-time now
' x# j) r" \3 s" h' Strack 2 rtr 10 m7 O) T9 g/ S" `
route-map AAA permit 10
& t. J" Q6 Y9 b/ L( f; fmatch interface Loopback0
' B' n" n |7 Y5 x$ n# S- Jset ip next-hop verify-availability 1.1.45.4 1 track 2
, a3 V* U, G" i4 @, z/ v) J4 ~1 H8 q& HR5#ping 4.4.4.4 sou lo0 :这里注意:此时如果你关闭R4的F1/1,即使流量匹配了route-map,但是策略还是不会被执行,走正常的路由表:详细见以下debug信息3 g5 s* g+ q+ ~* A
Wan30#debug ip policy7 Y2 K- v0 e9 C- M" |1 Y g
*Dec 3 18:49:42.115: IP: s=5.5.5.5 (local), d=4.4.4.4, len 100, policy match7 ?4 K% C* y/ J; d' q
*Dec 3 18:49:42.115: IP: route map AAA, item 10, permit6 h7 \ S3 T z* c; `( @, T
*Dec 3 18:49:42.115: IP: s=5.5.5.5 (local), d=4.4.4.4, len 100, policy rejected -- normal forwarding8 V$ o; b2 e& q+ _9 j
通过以上配置实验,数据包分流实现。 |