Cabletron Systems SSR-ATM29-02, Руководство пользователя, Страница: 52 / 386

Chapter 5: Changing System Settings
52 CoreWatch User’s Guide
Negotiate Port Speed and Mode check box. Otherwise, clear the check box to disable auto
negotiation on all Gigabit Ethernet ports.
All Gigabit Ethernet ports use auto negotiation. If auto negotiation is not set on a
Gigabit Ethernet port, that port uses the full-duplex mode and operates at 1000 Mbps.
6. If you want to configure 10/100 Mbps Ethernet ports, do one of the following.
Otherwise, skip to step
step 7 .
– If you want all 10/100 Mbps Ethernet ports to detect and then use the operating
mode or speed of the network segment to which the port is connected, select the
appropriate Autodetect options.
– If you want to set all 10/100 Mbps Ethernet ports’ operating mode or speed to a
specific setting, select the appropriate buttons.
All 10/100 Mbps Ethernet ports use autodetection by default.
The 100 FX ports do not use auto-detection. They always use full-duplex mode and
operate at 100 Mbps.
Note:
If you select an operating mode or speed, the setting disables autodetection
for that parameter on the port. For example, if you set the speed of a segment
to 10 Mbps, that segment no longer uses autodetection for the port speed and
will always attempt to operate at 10 Mbps.
7. Set the Layer 2 hash mode for all ports. The hash mode controls the distribution of
flow entries in Layer-2 and Layer-3 lookup tables. Assuming a MAC address of the
value 0011:2233:4455, the following list describes the various hash modes.
– M0 – 0011:2233:4455
– M1 – 0011:2233:5544
– M2 – 0011:3322:4455 (default hash mode)
– M3 – 1100:2233:4455
Note:
Cabletron has configured the SSR’s hash mode to its optimal setting. It is
recommended you not change the hash mode unless advised to do so by
Cabletron Technical Support.
8. Click OK.
Configuring an Individual Port
Configure an individual port if you want to enable or disable that port or set the port’s
physical characteristics. To configure an individual port:
1. Start Configuration Expert if you have not already done so.
Note:
If you open Configuration Expert by clicking a port in the Front Panel view,
Configuration Expert assumes you want to modify that port in the Active