Using 31-Bit Prefixes ...

From: Farhan Anwar (farhan.anwar@gmail.com)
Date: Sat Jan 19 2008 - 11:07:26 ARST


Hi Guys,
Just an off topic,
On my way to exploring DocCD in the final days, every-time i read 31-Bit
Prefixes in IP Addressing Section i got curious to lab it up and see how
they work, finally i have tested them in 2 min scenario. There is no room
for directed broadcasts as you can see only 2 addresses are there.

R4 IP: 150.1.1.0/31
R5 IP: 150.1.1.1/31

Rack1R4#sh run inter s1/1
Building configuration...

Current configuration : 107 bytes
!
interface Serial1/1
 ip address 150.1.1.0 255.255.255.254
 serial restart-delay 0
 clock rate 64000
end
---------------------------------------

Rack1R5#sh run inter s1/1
Building configuration...

Current configuration : 89 bytes
!
interface Serial1/1
 ip address 150.1.1.1 255.255.255.254
 serial restart-delay 0
end

---------------------------------------

Rack1R5#ping 150.1.1.0

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 150.1.1.0, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/34/64 ms
Rack1R5#

-- 
Farhan Anwar
www.farhananwar.com


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