518
C
HAPTER
37: T
ROUBLESHOOTING
No connection and the
port LED is off
Incorrect ethernet cable,
e.g., crossed rather than
straight cable, or vice
versa, split pair (incorrect
twisting of pairs).
Check pinout and
replace if necessary.
Fiber optical cable
connection is reversed.
Change if necessary.
Check Rx and Tx on the
fiber-optic cable.
Bad cable.
Replace with a tested
cable.
Wrong cable type.
Verify that all 10 Mbps
connections use a Cat 5
cable.
Check the port LED or
zoom screen in the NMS
application, and change
settings if necessary.
Problem
Possible Cause
Solution
Summary of Contents for 3CRUS2475 24
Page 18: ......
Page 40: ...40 CHAPTER 2 AAA COMMANDS ...
Page 54: ...54 CHAPTER 3 ACL COMMANDS ...
Page 76: ...76 CHAPTER 4 ADDRESS TABLE COMMANDS ...
Page 166: ...166 CHAPTER 10 CLOCK COMMANDS ...
Page 200: ...200 CHAPTER 13 LACP COMMANDS ...
Page 208: ...208 CHAPTER 14 POWER OVER ETHERNET COMMANDS ...
Page 262: ...262 CHAPTER 15 SPANNING TREE COMMANDS ...
Page 278: ...278 CHAPTER 17 RADIUS COMMAND ...
Page 281: ...show ports monitor 281 g1 8 RX TX Active g2 8 RX TX Active g18 8 RX Active ...
Page 282: ...282 CHAPTER 18 PORT MONITOR COMMANDS ...
Page 306: ...306 CHAPTER 19 SNMP COMMANDS ...
Page 316: ...316 CHAPTER 20 IP ADDRESS COMMANDS ...
Page 330: ...330 CHAPTER 22 WIRELESS ROGUE AP COMMANDS ...
Page 350: ...350 CHAPTER 23 WIRELESS ESS COMMANDS ...
Page 382: ...382 CHAPTER 25 SSH COMMANDS ...
Page 400: ...400 CHAPTER 27 TACACS COMMANDS Global values TimeOut 3 ...
Page 444: ...444 CHAPTER 31 USER INTERFACE COMMANDS ...
Page 454: ...454 CHAPTER 32 GVRP COMMANDS ...
Page 492: ...492 CHAPTER 34 802 1X COMMANDS ...
Page 521: ...Troubleshooting Solutions 521 ...
Page 522: ...522 CHAPTER 37 TROUBLESHOOTING ...