>>На linux:
>>
>>ip tunnel add ipip1 mode ipip local 91.144.150.13 remote 91.144.149.70
>>ifconfig ipip1 172.20.1.1 netmask 255.255.255.0 mtu 1400
>>
>>На cisco:
>>
>>interface Tunnel0
>>ip address 172.20.1.2 255.255.255.0
>>ip mtu 1400
>>tunnel source Loopback0
>>tunnel destination 91.144.150.13
>>tunnel mode ipip
>>
>>
>>Смотрим:
>>
>>Tunnel0 is up, line protocol is up
>>Hardware is Tunnel
>>Internet address is 172.20.1.2/24
>>MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
>>reliability 255/255, txload 1/255, rxload 1/255
>>Encapsulation TUNNEL, loopback not set
>>Keepalive not set
>>Tunnel source 91.144.148.70 (Loopback0), destination 91.144.150.13
>>Tunnel protocol/transport IP/IP
>>Tunnel TTL 255
>>Fast tunneling enabled
>>
>>Пингуем:
>>
>>ping 172.20.1.1
>>Type escape sequence to abort.
>>Sending 5, 100-byte ICMP Echos to 172.20.1.1, timeout is 2 seconds:
>>!!!!!
>>Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
>>
>>Радуемся жизни.
>
>На линуксе:
>ip tunnel add ipip1 mode ipip local 192.168.2.1 remote 192.168.1.1
>ifconfig ipip1 192.168.3.2 netmask 255.255.255.0 mtu 1514
>
>eth0 Link encap:Ethernet HWaddr 00:0C:F1:6B:61:CE
> inet addr:192.168.2.1
> Bcast:192.168.2.255 Mask:255.255.255.0
> inet6 addr:
>fe80::20c:f1ff:fe6b:61ce/64 Scope:Link
> UP BROADCAST
>RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:2051
>errors:0 dropped:0 overruns:0 frame:0
> TX packets:86
>errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
>
> RX bytes:199589
>(194.9 Kb) TX bytes:11870 (11.5 Kb)
> Interrupt:20
>
>ipip1 Link encap:IPIP Tunnel HWaddr
> inet addr:192.168.3.2
> P-t-P:192.168.3.2 Mask:255.255.255.0
> UP POINTOPOINT
>RUNNING NOARP MTU:1514 Metric:1
> RX packets:262
>errors:0 dropped:0 overruns:0 frame:0
> TX packets:262
>errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
>
> RX bytes:22008
>(21.4 Kb) TX bytes:27248 (26.6 Kb)
>
>На циске:
>interface Tunnel0
> ip address 192.168.3.1 255.255.255.0
> ip mtu 1514
> tunnel source 192.168.1.1
> tunnel destination 192.168.2.1
> tunnel mode ipip
>
>#show interfaces tunnel0
>Tunnel0 is up, line protocol is down
> Hardware is Tunnel
> Internet address is 192.168.3.1/24
> MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation TUNNEL, loopback not set
> Keepalive not set
> Tunnel source 192.168.1.1, destination 192.168.2.1
> Tunnel protocol/transport IP/IP
> Tunnel TTL 255
>
>
>
>и совсем не радуемся жизни :(
>тоже самое если маска /30
Глупы
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