Настройка маршрута по умолчанию

R1(config)#interface fastethernet0/0
R1(config-if)#ip address 64.100.0.1 255.255.255.0
R1(config-if)#no shutdown

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

R1(config-if)#exit
R1(config)#interface fastethernet0/1
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#no shutdown

%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up

R1(config-if)#exit
R1(config)#ip default-gateway 64.100.0.254
                      ^
% Invalid input detected at '^' marker.

ip route 0.0.0.0 0.0.0.0 64.100.0.254

ip route 0.0.0.0 0.0.0.0 64.100.0.254

ip route 0.0.0.0 0.0.0.0 64.100.0.254

ip default-network

R1#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route

Gateway of last resort is 64.100.0.254 to network 0.0.0.0

     64.0.0.0/24 is subnetted, 1 subnets
C       64.100.0.0 is directly connected, FastEthernet0/0
C    192.168.1.0/24 is directly connected, FastEthernet0/1
S*   0.0.0.0/0 [1/0] via 64.100.0.254
R1#

no ip route 0.0.0.0 0.0.0.0 64.100.0.254

ip default-network 64.100.0.254
ip default-network 64.0.0.0

ip route 0.0.0.0 0.0.0.0 fa0/0