Enterasys 6000 User Guide
Example, Effects of Aging Time on Dynamic Egress
Network Tools Screens
12-37
12.3 EXAMPLE, EFFECTS OF AGING TIME ON DYNAMIC EGRESS
This section provides an example of how aging time affects the dynamic recognition of frames
from a user device on a port.
from a user device on a port.
In this example, assume that a rule set on Port 1 of the switch module classifies all IP frames to a
Red VLAN. Once Port 1 receives a frame from a user device, the frame is classified to the
Red VLAN and added to the dynamic Port VLAN List of Port 1.
Red VLAN. Once Port 1 receives a frame from a user device, the frame is classified to the
Red VLAN and added to the dynamic Port VLAN List of Port 1.
If after 300 seconds another IP frame is not received on Port 1 (by any station), the Red VLAN is
removed from the dynamic Port VLAN List for Port 1. When Port 1 receives another frame, the
Red VLAN is added again to the dynamic Port VLAN List of Port 1 and the process continues.
removed from the dynamic Port VLAN List for Port 1. When Port 1 receives another frame, the
Red VLAN is added again to the dynamic Port VLAN List of Port 1 and the process continues.
The dynamic Port VLAN List is a temporary list used in the dynamic egress function to keep track
of the VLANs and the associated users that reside off a dynamic-egress enabled port.
of the VLANs and the associated users that reside off a dynamic-egress enabled port.
12.4 EXAMPLE, USING DYNAMIC EGRESS TO CONTROL TRAFFIC
In this simple example (
), assume that there are four ports on the switch module
attached to PCs supporting both protocols AppleTalk (809B and 80F3) and IP. Two PCs support IP
only. The AppleTalk frame traffic is to be contained so only the users running the AppleTalk
protocol can communicate with each other and not flood the network with AppleTalk frames.
However, all users are to have access to a web server connected to Port 7.
only. The AppleTalk frame traffic is to be contained so only the users running the AppleTalk
protocol can communicate with each other and not flood the network with AppleTalk frames.
However, all users are to have access to a web server connected to Port 7.
Figure 12-2 Example, Dynamic Egress Application
3069_106
S1
Web
Server
AppleTalk
IP
AppleTalk
IP
AppleTalk
IP
AppleTalk
IP
IP
IP
7
1 2 3 4 5 6
PCs