866
C
HAPTER
80: D
EVICE
M
ANAGEMENT
Diagnosing pluggable transceivers
The system outputs alarm information for you to diagnose and troubleshoot faults
of pluggable transceivers. Optical transceivers customized by 3Com also support
the digital diagnosis function, which enables a transceiver to monitor the main
parameters such as temperature, voltage, laser bias current, TX power, and RX
power. When these parameters are abnormal, you can take corresponding
measures to prevent transceiver faults.
Follow these steps to display pluggable transceiver information:
Configuring Pause
Frame Protection
Mechanism
Pause frames, which can be utilized as packets to attack a network, are used in
traffic controlling. A switch that has pause frame protection mechanism enabled
discards the detected pause frames that are utilized to attack the network it
resides and logs these attacks in the logbuffer. If the switch experiences successive
pause frame attacks, it sends messages to the console to warn users.
c
CAUTION:
Only A type modules support pause frame protection mechanism and
the related commands. A type modules include: 3C16860, 3C16861, LS81FS24A,
3C16858, and 3C16859.
Pause Frame Protection
Mechanism
Configuration Task
The following describes the configuration tasks of Pause Frame protection
mechanism.
Pause Frame Protection
Mechanism
Configuration Example
Network requirements
Enable pause frame protection mechanism on the module in Slot 7 of the switch.
Configuration procedure
1
Enter system view.
<SW7750> system-view
[SW7750]
2
Enable pause frame protection mechanism on the module seated in slot 7.
To do...
Use the command... Remarks
Display the current alarm
information of the pluggable
transceiver(s)
display transceiver alarm
interface
[
interface-type
interface-number
]
Available for all pluggable
transceivers
Display the currently
measured value of the digital
diagnosis parameters of the
anti-spoofing optical
transceiver(s) customized by
3Com
display transceiver
diagnosis interface
[
interface-type
interface-number
]
Available for anti-spoofing
pluggable optical
transceiver(s) customized by
3Com only
Table 685
Configure pause frame protection mechanism
Operation Command Description
Enter system view
system-view
-
Enable pause frame
protection mechanism
pause-protection enable
slot
slot-number
Required
Pause frame protection
mechanism is disabled by
default.
Summary of Contents for Switch 7754
Page 32: ...32 CHAPTER 1 CLI OVERVIEW ...
Page 70: ...70 CHAPTER 5 LOGGING IN USING MODEM ...
Page 76: ...76 CHAPTER 7 LOGGING IN THROUGH NMS ...
Page 86: ...86 CHAPTER 9 CONFIGURATION FILE MANAGEMENT ...
Page 120: ...120 CHAPTER 13 ISOLATE USER VLAN CONFIGURATION ...
Page 126: ...126 CHAPTER 14 SUPER VLAN ...
Page 136: ...136 CHAPTER 16 IP PERFORMANCE CONFIGURATION ...
Page 152: ...152 CHAPTER 17 IPX CONFIGURATION ...
Page 164: ...164 CHAPTER 19 QINQ CONFIGURATION ...
Page 172: ...172 CHAPTER 21 SHARED VLAN CONFIGURATION ...
Page 182: ...182 CHAPTER 22 PORT BASIC CONFIGURATION ...
Page 198: ...198 CHAPTER 24 PORT ISOLATION CONFIGURATION ...
Page 208: ...208 CHAPTER 25 PORT SECURITY CONFIGURATION ...
Page 224: ...224 CHAPTER 27 DLDP CONFIGURATION ...
Page 232: ...232 CHAPTER 28 MAC ADDRESS TABLE MANAGEMENT ...
Page 240: ...240 CHAPTER 29 CENTRALIZED MAC ADDRESS AUTHENTICATION CONFIGURATION ...
Page 280: ...280 CHAPTER 30 MSTP CONFIGURATION ...
Page 348: ...348 CHAPTER 35 IS IS CONFIGURATION ...
Page 408: ...408 CHAPTER 39 802 1X CONFIGURATION ...
Page 412: ...412 CHAPTER 40 HABP CONFIGURATION ...
Page 422: ...422 CHAPTER 41 MULTICAST OVERVIEW ...
Page 426: ...426 CHAPTER 42 GMRP CONFIGURATION ...
Page 480: ...480 CHAPTER 47 PIM CONFIGURATION ...
Page 506: ...506 CHAPTER 48 MSDP CONFIGURATION ...
Page 552: ...552 CHAPTER 51 TRAFFIC ACCOUNTING CONFIGURATION ...
Page 570: ...570 CHAPTER 53 HA CONFIGURATION ...
Page 582: ...582 CHAPTER 54 ARP CONFIGURATION SwitchA arp protective down recover interval 200 ...
Page 622: ...622 CHAPTER 58 DHCP RELAY AGENT CONFIGURATION ...
Page 684: ...684 CHAPTER 61 QOS CONFIGURATION ...
Page 718: ...718 CHAPTER 63 CLUSTER ...
Page 738: ...738 CHAPTER 67 UDP HELPER CONFIGURATION ...
Page 752: ...752 CHAPTER 69 RMON CONFIGURATION ...
Page 772: ...772 CHAPTER 70 NTP CONFIGURATION ...
Page 796: ...796 CHAPTER 72 FILE SYSTEM MANAGEMENT ...
Page 802: ...802 CHAPTER 73 BIMS CONFIGURATION ...
Page 814: ...814 CHAPTER 74 FTP AND TFTP CONFIGURATION ...
Page 830: ...830 CHAPTER 75 INFORMATION CENTER ...
Page 836: ...836 CHAPTER 76 DNS CONFIGURATION ...
Page 852: ...852 CHAPTER 77 BOOTROM AND HOST SOFTWARE LOADING ...
Page 858: ...858 CHAPTER 78 BASIC SYSTEM CONFIGURATION DEBUGGING ...