Remember that IPv6 is composed of 128 bits. This is commonly expressed by 16′s in 8 groups (8 * 16 = 128).
Example IPv6 address: FEC0:0:0:A:125:23FF:FEE2:1F53 (count the “:” it is a group by 8)
Summarization Tidbits:
Example:
Summarize the following addresses:
FEC0:0:0:A:125:23FF:FEE2:1F53 and
FEC0:0:0:E:10A:9FFF:FED7:D3
0000 0000 0000 1010 – A
0000 0000 0000 1110 – E
0000 0000 0000 1000 – 8 – common mask
FEC0 + 0 + 0 = 48 bit position
16 + 16 + 16 = 48,
+ (12 zeros common between A and E, as per above)
48 + 12 = 60
+ (1 bit for the 8 – common mask)
60 + 1 = 61 <—total bit position, this is your MASK.
Answer: FEC0:0:0:8::/61
Gets?
