Datasheet

54
Release Notes for Catalyst 4500 Series Software Release 7.x
OL-1983-28
Usage Guidelines, Restrictions, and Troubleshooting
• Do not plug an Ethernet cable into a serial port, because you will misconfigure your switch.
• These restrictions apply when configuring port security:
– You cannot configure dynamic, static, or permanent CAM entries on a secure port.
– When you enable port security on a port, any static or dynamic CAM entries associated with the
port are cleared; any currently configured permanent CAM entries are treated as secure.
• If you configure a secure port to restrictive mode and a station is connected to the port whose MAC
address is already configured as a secure MAC address on another port on the switch, the port in
restrictive mode will shut down rather than restrict traffic from that station. For example, if you
configure MAC-1 as the secure MAC address on port 2/1 and MAC-2 as the secure MAC address on
port 2/2, and you then connect the station with MAC-1 to port 2/2 when port 2/2 is configured for
restrictive mode, port 2/2 will shut down instead of restricting traffic from MAC-1.
• Do not enable protocol filtering on the switch if you have configured port security on any ports and
set the violation mode to restrict. There is no restriction if the violation mode is set to shutdown;
you can enable protocol filtering on the switch.
• When you connect a Catalyst 4500 series port that is set to autonegotiate an end station or another
networking device, make sure that the other device also is configured for autonegotiation. If the
other device is not set to autonegotiate, the Catalyst 4500 series autonegotiating port will remain in
half-duplex mode, which can cause a duplex mismatch, resulting in packet loss, late collisions, and
line errors on the link.
• Some ports on the Catalyst 4500 series oversubscribed Gigabit Ethernet modules do not reliably
autonegotiate Ethernet operational modes with some Sun Gigabit Ethernet NICs. The 18-port server
switching 1000BASE-X (GBIC) Gigabit Ethernet module (WS-X4418-GB) is affected.
These Sun Gigabit Ethernet NICs are affected:
– X1140A Sun Gigabit Ethernet Sbus Adapter 2.0
– X1141A PCI Gigabit Ethernet PCI Adapter 2.0
Workaround: Use this configuration:
Catalyst 4500 series Ports Sun Gigabit Ethernet NIC
Configuration Command Configuration Command
Autonegotiation
disabled
set port negotiation
mod_num/port_num disable
Autonegotiation
disabled
ndd -set /dev/ge
adv_1000autoneg_cap 0
– – Half duplex off ndd -set /dev/ge
adv_1000hdx_cap 0
Send flow
control on
1
1. Default setting
(CSCdm38405)
set port flowcontrol
mod_num/port_num send on
Send flow control
off
ndd -set /dev/ge
adv_pauseTX 0
Receive flow
control desired
1
set port flowcontrol
mod_num/port_num receive
desired
Receive flow
control on
ndd -set /dev/gs
adv_pauseRX 1