Filter
Top Products
Policies and Filters
Policies
A policy is a set of rules that defines how the device handles packets. Table C.3 lists the types of policies you can
configure on the routing switches and the switch.
Table C.3: Policies
Policy Type Supported on... See page...
Routing
Switch
Switch
Quality-of-Service (QoS) Policies X X 5
Layer 3 Policies 6
Protocol-based VLANs – either forward or drop Layer 3 traffic
based on protocol (or, for IP sub-net VLANs and IPX network
VLANs, sub-net or network address)
X 6
IP access policies – either forward or drop IP packets X 7
Layer 4 Policies 28
TCP/UDP access policies – either forward or drop packets based
on TCP or UDP port
X 9
X
X
Quality-of-Service Policies
The routing switches and switch support Quality-of-Service (QoS) through implementation of 802.1p/q
prioritization. You can configure QoS policies for packets associated with the following items:
• Ports
• VLANs
• Static MAC entries
• Layer 4 sessions
• AppleTalk sockets.
The default queue for all packets is normal (or 0). You can change QoS policy by placing a port, VLAN, static
MAC entry, Layer 4 session, or AppleTalk socket into a higher queue. See “Quality of Service (QoS)” on page 2-
1 for more information about the QoS algorithm.
Actions
QoS policies place packets in the specified queue for forwarding.
Scope
You can apply QoS policies to individual ports, VLANs, static MAC address, Layer 4 sessions, and AppleTalk
sockets. If a port is a member of two or more of these items and has different priorities, the priorities are merged.
However, the resulting priority is never lower than the highest priority.
C - 5