Switching
[ Switching > Global ]
146
RM GUI GRS
Release
8.0
09/2019
5 Switching
The menu contains the following dialogs:
5.1
Switching Global
[ Switching > Global ]
This dialog lets you specify the following settings:
Change the Aging time of the address table
Enable the flow control in the device
Enable the VLAN Unaware Mode
If a large number of data packets are received in the priority queue of a port at the same time, then
this can cause the port memory to overflow. This happens, for example, when the device receives
data on a Gigabit port and forwards it to a port with a lower bandwidth. The device discards surplus
data packets.
The flow control mechanism described in standard IEEE 802.3 helps ensure that no data packets
are lost due to a port memory overflowing. Shortly before a port memory is completely full, the
device signals to the connected devices that it is not accepting any more data packets from them.
In full-duplex mode, the device sends a pause data packet.
In half-duplex mode, the device simulates a collision.
Then the connected devices do not send any more data packets for as long as the signaling takes.
On uplink ports, this can possibly cause undesired sending breaks in the higher-level network
segment (“wandering backpressure”).
According to standard IEEE 802.1Q, the device forwards data packets with a VLAN tag in a VLAN
≥1
. However, a small number of applications on connected end devices send or receive data
packets with a VLAN ID=
0
. When the device receives one of these data packets, before forwarding
it the device overwrites the original value in the data packet with the VLAN ID of the receiving port.
If you activate the VLAN Unaware Mode, then this deactivates the VLAN settings in the device. The
device then transparently forwards the data packets and evaluates the priority information
contained only in the data packet.
Configuration
MAC address
Displays the MAC address of the device.
Summary of Contents for GREYHOUND GRS1020
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