單項選擇題

用戶有兩個出口,電信和聯(lián)通,G0/1為電信接口,公網(wǎng)IP為202.101.1.2,公網(wǎng)的網(wǎng)關(guān)為202.101.1.1,用戶內(nèi)網(wǎng)有兩個IP段,172.16.1.0/24和172.16.2.0/24,現(xiàn)在用戶已經(jīng)配置好兩條metric值一樣的電信聯(lián)通默認路由,但是用戶希望172.16.1.0/24網(wǎng)段直走電信,只有在電信線路down時,才走其他線路,以下EG的源路由配置正確的是()。

A.ip access-list standard 1010permit 172.16.1.00.0.0.255route-map ruijie permit 10match ip address 10set next-hop 202.101.1.1
B.ip access-list standard 1010permit 172.16.1.00.0.0.255route-map ruijie permit 10match ip address 10set ip default next-hop 202.101.1.1
C.ip access-list standard 1010permit 172.16.1.00.0.0.255route-map ruijie permit 10match ip address 10set ip next-hop 202.101.1.1
D.ip access-list standard 1010permit 172.16.1.00.0.0.255route-map ruijie permit 10match ip address 10set metric 20

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