Access list key compression

摘要

Methods and apparatus for implementing an access list key for accessing information associated with a packet from an access list are disclosed. The packet includes an IP source address field and an IP destination address field, the IP source address field including an IP source address and the IP destination address field including an IP destination address, the IP source address and the IP destination address each having a number of bits (e.g., 128 bits in the case of IPv6). An IP source address is obtained from the IP source address field of the packet and an IP destination address is obtained from the IP destination address field of the packet. A modified IP source address is generated from the obtained IP source address such that the number of bits in the modified IP source address is less than the number of bits in the obtained IP source address. In addition, a modified IP destination address is generated from the obtained IP destination address such that the number of bits in the modified IP destination address is less than the number of bits in the obtained IP destination address. The access list key is then composed from the modified IP source address and the modified IP destination address.

主权项

1. An apparatus, comprising:
a processor; and a memory, at least one of the processor or the memory being adapted for: obtaining a packet, the packet including an IP source address and an IP destination address; composing a compressed access list key, at least in part, from 1) a modified IP source address that has been generated from the IP source address but excludes a subset of bits from the IP source address and that includes a first Zone_ID replacing the subset of bits from the IP source address such that the modified IP source address includes fewer bits than the IP source address and/or from 2) a modified IP destination address that has been generated from the IP destination address but excludes a subset of bits from the IP destination address and that includes a second Zone_ID replacing the subset of bits from the IP destination address such that the modified IP destination address includes fewer bits than the IP destination address; and routing the packet using the compressed access list key.