D-Link 3250TG Product Manual - Page 56

Setup Port Mirroring window, Parameter, Description

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D-Link DES-3250TG Standalone Layer 2 Switch Figure 6- 12. Setup Port Mirroring window The target port is where information will be duplicated and sent for capture and network analysis. This is the port where a network analyzer would be attached to capture packets duplicated from the source port. It should be noted that a faster port (a 1000 Mbps Gigabit Ethernet port, for example) should not be mirrored to a slower port (one of the 48 100 Mbps Fast Ethernet ports), because many packets will be dropped. The following fields can be set: Parameter Description Source Port None Ingress Egress Both Target Port Status Allows multiple ports to be mirrored. These ports are the sources of the packets to be duplicated and forwarded to the Target port. Selecting this option prevents any packets from either being received or transmitted. Selecting this option mirrors only received packets. Selecting this option mirrors only transmitted packets. Selecting this option mirrors both received and transmitted packets. This port is where information will be duplicated and sent for capture and network analysis. Toggle between Enabled and Disabled. Link Aggregation Link aggregation allows several ports to be grouped together and to act as a single link. This gives a bandwidth that is a multiple of a single link's bandwidth. Link aggregation is most commonly used to link a bandwidth intensive network device or devices - such as a server - to the backbone of a network. The switch allows the creation of up to six link aggregation groups, each group consisting of up to eight links (ports). All of the ports in the group must be members of the same VLAN. Further, the aggregated links must all be of the same speed and should be configured as full duplex. The configuration of the Master Port in the group becomes the configuration for all of the ports in the aggregation group. All configuration options - including the VLAN configuration - that can be applied to the Master Port are applied to the entire link aggregation group. Load balancing is automatically applied to the ports in the aggregated group, and a link failure within the group causes the network traffic to be directed to the remaining links in the group. 48

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D-Link DES-3250TG Standalone Layer 2 Switch
Figure 6- 12.
Setup Port Mirroring window
The target port is where information will be duplicated and sent for capture and network analysis. This
is the port where a network analyzer would be attached to capture packets duplicated from the source
port.
It should be noted that a faster port (a 1000 Mbps Gigabit Ethernet port, for example) should not be
mirrored to a slower port (one of the 48 100 Mbps Fast Ethernet ports), because many packets will be
dropped.
The following fields can be set:
Parameter
Description
Source Port
Allows multiple ports to be mirrored.
These ports are the sources of the
packets
to
be
duplicated
and
forwarded to the Target port.
None
Selecting this option prevents any
packets from either being received or
transmitted.
Ingress
Selecting this option mirrors only
received packets.
Egress
Selecting this option mirrors only
transmitted packets.
Both
Selecting this option mirrors both
received and transmitted packets.
Target Port
This port is where information will be
duplicated and sent for capture and
network analysis.
Status
Toggle
between
Enabled
and
Disabled
.
Link Aggregation
Link aggregation allows several ports to be grouped together and to act as a single link. This gives a
bandwidth that is a multiple of a single link’s bandwidth.
Link aggregation is most commonly used to link a bandwidth intensive network device or devices – such
as a server – to the backbone of a network.
The switch allows the creation of up to six link aggregation groups, each group consisting of up to eight
links (ports). All of the ports in the group must be members of the same VLAN. Further, the aggregated
links must all be of the same speed and should be configured as full duplex.
The configuration of the Master Port in the group becomes the configuration for all of the ports in the
aggregation group. All configuration options – including the VLAN configuration – that can be applied to
the Master Port are applied to the entire link aggregation group.
Load balancing is automatically applied to the ports in the aggregated group, and a link failure within
the group causes the network traffic to be directed to the remaining links in the group.
48