400
C
HAPTER
46: DHCP R
ELAY
C
ONFIGURATION
You need to perform corresponding configurations on the DHCP server to enable the
DHCP clients to obtain IP addresses from the DHCP server. The DHCP server
configurations differ depending on different DHCP server devices and are thus
omitted.
Troubleshooting DHCP
Relay
Symptom
A client fails to obtain configuration information through a DHCP relay.
Analyze
This problem may be caused by improper DHCP relay configuration. When a DHCP
relay operates improperly, you can locate the problem by enabling debugging and
checking the information about debugging and interface state (You can display the
information by executing the corresponding
display
command.)
Solution
■
Check if an address pool that is on the same network segment with the DHCP
clients is configured on the DHCP server.
■
Check if a reachable route is configured between the DHCP relay and the DHCP
server.
■
Check if the DHCP relay has proper relay IP addresses configured on the VLAN
interface to which the network segment containing the DHCP clients is connected,
and if the configured relay IP addresses conflict.
Summary of Contents for 4200G 12-Port
Page 10: ...8 CONTENTS...
Page 14: ...4 ABOUT THIS GUIDE...
Page 46: ...32 CHAPTER 5 LOGGING IN THROUGH WEB BASED NETWORK MANAGEMENT SYSTEM...
Page 48: ...34 CHAPTER 6 LOGGING IN THROUGH NMS...
Page 60: ...46 CHAPTER 9 VLAN CONFIGURATION...
Page 64: ...50 CHAPTER 10 MANAGEMENT VLAN CONFIGURATION...
Page 80: ...66 CHAPTER 13 GVRP CONFIGURATION...
Page 98: ...84 CHAPTER 15 LINK AGGREGATION CONFIGURATION...
Page 112: ...98 CHAPTER 18 MAC ADDRESS TABLE MANAGEMENT...
Page 126: ...112 CHAPTER 19 LOGGING IN THROUGH TELNET...
Page 162: ...148 CHAPTER 20 MSTP CONFIGURATION...
Page 274: ...260 CHAPTER 29 IGMP SNOOPING CONFIGURATION...
Page 276: ...262 CHAPTER 30 ROUTING PORT JOIN TO MULTICAST GROUP CONFIGURATION...
Page 298: ...284 CHAPTER 33 SNMP CONFIGURATION...
Page 304: ...290 CHAPTER 34 RMON CONFIGURATION...
Page 338: ...324 CHAPTER 36 SSH TERMINAL SERVICES...
Page 356: ...342 CHAPTER 38 FTP AND TFTP CONFIGURATION...
Page 365: ...Information Center Configuration Example 351 S4200G terminal logging...
Page 366: ...352 CHAPTER 39 INFORMATION CENTER...
Page 378: ...364 CHAPTER 40 BOOTROM AND HOST SOFTWARE LOADING...
Page 384: ...370 CHAPTER 41 Basic System Configuration and Debugging...
Page 388: ...374 CHAPTER 43 NETWORK CONNECTIVITY TEST...
Page 406: ...392 CHAPTER 45 CONFIGURATION OF NEWLY ADDED CLUSTER FUNCTIONS...