Using CIDR notation to enter the IPv6 ACL prefix length

CIDR (Classless Inter-Domain Routing) notation is used to specify ACL prefix lengths. The switch compares the address bits specified by a prefix length for an SA or DA in an ACE with the corresponding address bits in a packet being filtered by the ACE. If the designated bits in the ACE and in the packet have identical settings, the addresses match.

Table 10: Examples of CIDR notation for prefix lengths
SA or DA used in an ACL with CIDR notation	Resulting prefix length defining an address match	Meaning
2530:0:a03:e102::/64	2530:0:a03:e102	The leftmost 64 bits must match. The remaining 64 bits are wildcards.
2530:0:a03:e102:215::/80	2530:0:a03:e102:215	The leftmost 80 bits must match. The remaining 48 bits are wildcards.
2530:0:a03:e102:215:60ff:fe7a:adc0/128	2530:0:a03:e102:215:60ff:fe7a:adc0	All 128 bits must match. This specifies a single host address.
2001:db8:a03:e102:0:ab4:100::/112	2001:db8:a03:e102:0:ab4:100	The leftmost 112 bits must match. The remaining 16 bits are wildcards.