KB.15.15

Table 50 Filter types and criteria

Selection criteriaStatic Filter Type

Inbound traffic from a designated, physical source-port will be forwarded or dropped on a

per-port (destination) basis.

Source-port

Inbound traffic having a specified multicast MAC address will be forwarded to outbound ports

(the default) or dropped on a per-port (destination) basis.

Multicast

Inbound traffic having the selected frame (protocol) type will be forwarded or dropped on a

per-port (destination) basis.

Protocol

Source-Port Filters

This filter type enables the switch to forward or drop traffic from all end nodes on the indicated

source-port to specific destination ports.

Figure 329 Source-port filer application

Operating Rules for Source-Port Filters

• You can configure one source-port filter for each physical port and port trunk on the switch.

(See “Defining and configuring named source-port filters” (page 428).)

• You can include all destination ports and trunks in the switch on a single source-port filter.

• Each source-port filter includes:

One source port or port trunk (trk1, trk2, ...trkn)◦

◦ A set of destination ports and/or port trunks that includes all untrunked LAN ports and

port trunks on the switch

◦ An action (forward or drop) for each destination port or port trunk

When you create a source-port filter, the switch automatically sets the filter to forward traffic

from the designated source to all destinations for which you do not specifically configure a

“drop” action. Thus, it is not necessary to configure a source-port filter for traffic you want the

switch to forward unless the filter was previously configured to drop the desired traffic.

• When you create a source port filter, all ports and port trunks (if any) on the switch appear

as destinations on the list for that filter, even if routing is disabled and separate VLANs and/or

subnets exist. Where traffic would normally be allowed between ports and/or trunks, the

switch automatically forwards traffic to the outbound ports and/or trunks you do not specifically

Overview 451