486 Configuring and managing security ACLs
NN47250-500 (Version 03.01)

Wildcard masks

When you specify source and destination IP addresses in an ACE, you must also include a mask for each in the
form source-ip-addr mask and destination-ip-addr mask.
The mask is a wildcard mask. The security ACL checks the bits in IP addresses that correspond to any 0s
(zeros) in the mask, but does not check the bits that correspond to 1s (ones) in the mask. Specify the IP address
and wildcard mask in dotted decimal notation. For example, the IP address and wildcard mask 10.0.0.0 and
0.255.255.255 match all IP addresses that begin with 10 in the first octet.

Class of Service

Class-of-service (CoS) assignment determines the priority treatment of packets transmitted by a WSS, corre-
sponding to a forwarding queue on the AP. Table 28 shows the results of CoS priorities you assign in security
ACLs.
17 User Datagram Protocol (UDP)
46 Resource Reservation Protocol (RSVP)
47 Generic Routing Encapsulation (GRE) protocol
50 Encapsulation Security Payload for IPSec (IPSec-ESP)
51 Authentication Header for IPSec (IPSec-AH)
55 IP Mobility (Mobile IP)
88 Enhanced Interior Gateway Routing Protocol (EIGRP)
89 Open Shortest Path First (OSPF) protocol
103 Protocol Independent Multicast (PIM) protocol
112 Virtual Router Redundancy Protocol (VRRP)
115 Layer Two Tunneling Protocol (L2TP)

Table 28: Class-of-Service (CoS) packet

handling

WMM Priority
Desired
CLI CoS Value to
Enter
Background 1 or 2
Best effort 0 or 3
Video 4 or 5
Voice 6 or 7

Table 27: Common IP protocol numbers

Number IP Protocol