Enabling/Disabling Flow Control For The Ethernet Port; Permitting/Forbidding Jumbo Frame To Pass The Ethernet Port - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide
Restore the default type of the cable
connected to the Ethernet port
Note that, the settings only take effect on 10/100 Mbps and 10/100/1000 Mbps
electrical ports.
By default, the cable type is auto (auto-recognized). That is, the system can
automatically recognize the type of cable connecting to the port.

6.2.7 Enabling/Disabling Flow Control for the Ethernet Port

After enabling flow control in both the local and the peer switch, if congestion occurs in
the local switch, the switch will inform its peer to pause packet sending. Once the peer
switch receives this message, it will pause packet sending, and vice versa. In this way,
packet loss is reduced effectively. The flow control function of the Ethernet port can be
enabled or disabled through the following command.
Perform the following configuration in Ethernet port view.
Table 6-7 Enable/disable flow control for the Ethernet port
Enable Ethernet port flow control
Disable Ethernet port flow control
By default, Ethernet port flow control is disabled.

6.2.8 Permitting/Forbidding Jumbo Frame to Pass the Ethernet Port

The Ethernet port may encounter the jumbo frame exceeding the standard frame
length, when switching large throughput data like transmitting files. This command can
forbid or permit the jumbo frame to pass the Ethernet port.
Perform the following configuration in Ethernet port view.
Table 6-8 Permit/forbid jumbo frame to pass the Ethernet port
Permit jumbo frame to pass the Ethernet port
Forbid jumbo frame to pass the Ethernet port
By default, the jumbo frame is permitted to pass the Ethernet port.
Operation
Operation
Operation
6-4
Chapter 6 Ethernet Port Configuration
Command
undo mdi
Command
flow-control
undo flow-control
Command
jumboframe
[ jumboframe-value ]
undo jumboframe enable
enable