Internet -----------+--- | 192.168.1.0/24 ---+---+----------------- | | 192.168.1.254 +--------+ | RT100i | +--------+ : 0xxx-11-1111/yamaha : : 0xxx-22-2222:cisco +--------+ | Cisco | +--------+ | 192.168.2.254 | ---+--------------------- 192.168.2.0/24[RT100i] isdn local address 0xxx111111/yamaha ip lan address 192.168.1.254/24 pp select 1 isdn remote address 0xxx222222/cisco 0xxx222222 ip pp route add net 192.168.2.0/24 2 pp enable 1 [Cisco] isdn switch-type ntt ! interface Ethernet0 ip address 192.168.2.254 255.255.255.0 ! interface BRI0 ip unnumbered Ethernet0 encapsulation ppp no keepalive dialer map ip 192.168.1.254 0xxx111111:yamaha dialer map ip 192.168.1.254 0xxx111111 dialer hold-queue 10 dialer-group 1 isdn caller 0xxx111111 isdn answer 0xxx222222:cisco ← ダイヤルインを契約している回線の場合 isdn answer :cisco ← ダイヤルインを契約していない回線の場合 ! ip classless ip route 192.168.1.254 255.255.255.255 BRI0 ip route 0.0.0.0 0.0.0.0 192.168.1.254 dialer-list 1 protocol ip permit