GL-41
Cisco Router and Security Device Manager 2.5 User’s Guide
OL-4015-12
Glossary
WFQ Weighted Fair Queuing. A flow-based queuing algorithm that does two things
simultaneously: It schedules interactive traffic to the front of the queue to reduce
response time, and it fairly shares the remaining bandwidth between high
bandwidth flows.
wildcard mask A bit mask used in access rules, IPSec rules, and NAT rules to specify which
portions of the packet’s IP address must match the IP address in the rule. A
wildcard mask contains 32 bits, the same number of bits in an IP address. A
wildcard bit value of 0 specifies that the bit in that same position of the packet’s
IP address must match the bit in the IP address in the rule. A value of 1 specifies
that the corresponding bit in the packet’s IP address can be either 1 or 0, that is,
that the rule “doesn’t care” what the value of the bit is. A wildcard mask of
0.0.0.0 specifies that all 32 bits in the packet’s IP address must match the IP
address in the rule. A wildcard mask of 0.0.255.0 specifies that the first 16 bits,
and the last 8 bits must match, but that the third octet can be any value. If the IP
address in a rule is 10.28.15.0, and the mask is 0.0.255.0, t he IP address
10.28.88.0 would match the IP address in the rule, and the IP address
10.28.15.55 would not match.
WINS Windows Internet Naming Service. A Windows system that determines the IP
address associated with a particular network computer.
WMM Wi-Fi Multimedia. An IEEE 802.11e Quality of Service (QoS) draft standard.
WMM compliant equipment is designed to improve the user experience for
audio, video, and voice applications over a Wi-Fi wireless connection.
WRED Weighted Random Early Detection. A queueing method that ensures that
high-precedence traffic has lower loss rates than other traffic during times of
congestion.
X
X.509 A digital certificate standard, specifying certificate structure. Main fields are ID,
subject field, validity dates, public key, and CA signature.
X.509 certificate A digital certificate that is structured according to the X.509 guidelines.