A.代理驗(yàn)證 B.強(qiáng)制CHAP驗(yàn)證 C.IPCP重協(xié)商 D.LCP重協(xié)商
A.tunnel protocol gre B.tunnel gre C.tunnel-protocol gre D.protocol gre
A.keepalive 103 B.keepalive 3 10 C.keepalive-interval 10 D.keepalive-times 3
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