cisco ppp认证方式(pap、chap认证)
R1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter ar
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-I
ia - IS-IS inter area, * - candidate default, U - per-user s
o - ODR, P - periodic downloaded static route
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