I have an OC3 ATM WAN link that connect two LANs, but there are two
identical subnets /30 on either side of the WAN link. Has any one ever had
that type of setup and how is that possible with two identical public IP /30
subnets on either side of WAN connection?
Here are the interfaces on either side of the wan
AAAV7204#sh int fastEthernet 1/0
FastEthernet1/0 is up, line protocol is up
Hardware is DEC21140A, address is 0003.6cce.f01c (bia 0003.6cce.f01c)
Description: FE from PM to WDGB
Internet address is 205.109.29.10/30
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:21, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/4/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 814000 bits/sec, 113 packets/sec
5 minute output rate 81000 bits/sec, 79 packets/sec
441800484 packets input, 1055724299 bytes
Received 713 broadcasts, 0 runts, 0 giants, 2 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
349363988 packets output, 1452170449 bytes, 0 underruns
AAAV7206#sh ip int fastEthernet 1/0
FastEthernet1/0 is up, line protocol is up
Internet address is 205.109.29.9/30
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is enabled
IP Fast switching turbo vecto
Thank you,
Randy
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