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ipv6 format

guys which one of the ipv6 address is right or whats the difference between the following

FECO:0:0:E::1/64

FECO:0:0:E:1::/64

2 REPLIES
Silver

Re: ipv6 format

Both are correct but show different values. Prefix wise they are the same.

:: is one or more zeros.

Thanks.

Cisco Employee

Re: ipv6 format

Khan,

These are both valid addresses. Zeroes have been suppressed. If you look at these addresses in the extended format, they would look like this:

FEC0:0000:0000:000E:0000:0000:0000:0001/64

FEC0:0000:0000:000E:0001:0000:0000:0000/64

Note that the network portion is the same for both (FEC0:0000:0000:000E) and only the host portion is different. I guess the difference is easier to see this way.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México 
Paseo de la Reforma 222 Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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