Chapter 28 DHCP Relay
IES-1248-71/73 User’s Guide
203
The following table describes the labels in this screen.
Table 55
DHCP Relay
LABEL
DESCRIPTION
Enable DHCP
Relay:
Enable DHCP relay to have the IES-1248 relay DHCP requests to a DHCP
server and the server’s responses back to the clients.
Relay Mode
Specify how the IES-1248 relays DHCP requests.
Auto
- The IES-1248 routes DHCP requests to the active server for each VLAN.
Both
- The IES-1248 routes DHCP requests to the primary and secondary
server for each VLAN, regardless of which one is active.
Enable Option82
Sub-option1
Enable DHCP relay info to have the IES-1248 add the originating port numbers
to DHCP requests regardless of whether the DHCP relay is on or off.
Sub-option1 (Circuit
ID)
Use this field to specify up to 23 ASCII characters of additional information for
the IES-1248 to add to the DHCP requests that it relays to a DHCP server.
Examples of information you could add would be the chassis number of the IES-
1248 or the ISP’s name.
Enable Option82
Sub-option2
Enable DHCP relay info to have the IES-1248 add the sub-option 2 (Remote ID)
to DHCP requests regardless of whether the DHCP relay is on or off.
Sub-option2
(Remote ID)
Use this field to specify up to 23 ASCII characters of additional information for
the IES-1248 to add to the DHCP requests that it relays to a DHCP server.
Apply
Click
Apply
to save your changes to the IES-1248’s volatile memory. The IES-
1248 loses these changes if it is turned off or loses power, so use the
Config
Save
link on the navigation panel to save your changes to the non-volatile
memory when you are done configuring.
Cancel
Click
Cancel
to begin configuring this screen afresh.
VLAN ID
Enter the ID of the VLAN served by the specified DHCP relay(s). Enter 0 to set
up the IP address(es) of the default DHCP relay(s).
Primary Server IP
Enter the IP address of one DHCP server to which the switch should relay
DHCP requests for the selected VLAN.
Secondary Server
IP
Enter the IP address of a second DHCP server to which the switch should relay
DHCP requests for the selected VLAN. Enter 0.0.0.0 if there is only one DHCP
relay for the selected VLAN.
Active Server
This field has no effect if the
Relay Mode
is
Both
. If the
Relay Mode
is
Auto
,
select which DHCP server (the primary one or the secondary one) to which the
IES-1248 should relay DHCP requests for the selected VLAN.
Apply
Click
Apply
to save your changes to the IES-1248’s volatile memory. The IES-
1248 loses these changes if it is turned off or loses power, so use the
Config
Save
link on the navigation panel to save your changes to the non-volatile
memory when you are done configuring.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Server List
This section lists the DHCP servers that are already set up for each VLAN. An
asterisk in parentheses (*) indicates which DHCP server is active for each
VLAN.
Index
This is a sequential value, and it is not associated with any entry. The entries
are sorted by VLAN ID.
VLAN ID
This field displays the ID of the VLAN served by the specified DHCP relay(s).
Primary Server IP
This field displays the IP address of one DHCP server to which the switch
should relay DHCP requests.
Secondary Server
IP
This field displays the IP address of a second DHCP server to which the switch
should relay DHCP requests. This field is 0.0.0.0 if the primary server is the only
DHCP relay.
Summary of Contents for IES-1248-71
Page 2: ......
Page 8: ...Safety Warnings IES 1248 71 73 User s Guide 8 ...
Page 38: ...List of Tables IES 1248 71 73 User s Guide 38 ...
Page 40: ...40 ...
Page 52: ...Chapter 2 Hardware Installation IES 1248 71 73 User s Guide 52 ...
Page 60: ...Chapter 3 Front Panel Connections IES 1248 71 73 User s Guide 60 ...
Page 68: ...Chapter 4 MDF Connections IES 1248 71 73 User s Guide 68 ...
Page 74: ...74 ...
Page 81: ...Chapter 7 Introducing the Web Configurator IES 1248 71 73 User s Guide 81 Figure 30 Logout ...
Page 82: ...Chapter 7 Introducing the Web Configurator IES 1248 71 73 User s Guide 82 ...
Page 110: ...Chapter 12 User Account IES 1248 71 73 User s Guide 110 ...
Page 116: ...Chapter 13 Switch Setup IES 1248 71 73 User s Guide 116 ...
Page 118: ...Chapter 14 IP Setup IES 1248 71 73 User s Guide 118 ...
Page 150: ...Chapter 17 xDSL Profiles Setup IES 1248 71 73 User s Guide 150 ...
Page 158: ...158 ...
Page 166: ...Chapter 19 VLAN IES 1248 71 73 User s Guide 166 ...
Page 184: ...Chapter 22 Multicast VLAN IES 1248 71 73 User s Guide 184 ...
Page 216: ...Chapter 30 2684 Routed Mode IES 1248 71 73 User s Guide 216 ...
Page 222: ...Chapter 31 PPPoA to PPPoE IES 1248 71 73 User s Guide 222 ...
Page 226: ...Chapter 32 DSCP IES 1248 71 73 User s Guide 226 ...
Page 240: ...Chapter 36 Syslog IES 1248 71 73 User s Guide 240 ...
Page 248: ...Chapter 37 Access Control IES 1248 71 73 User s Guide 248 ...
Page 250: ...250 ...
Page 259: ...Chapter 39 Alarm IES 1248 71 73 User s Guide 259 ...
Page 260: ...Chapter 39 Alarm IES 1248 71 73 User s Guide 260 ...
Page 276: ...276 ...
Page 296: ...Chapter 44 Commands IES 1248 71 73 User s Guide 296 ...
Page 304: ...Chapter 45 Command Examples IES 1248 71 73 User s Guide 304 ...
Page 320: ...Chapter 47 DHCP Commands IES 1248 71 73 User s Guide 320 ...
Page 328: ...Chapter 48 IEEE 802 1Q Tagged VLAN Commands IES 1248 71 73 User s Guide 328 ...
Page 334: ...Chapter 49 MAC Commands IES 1248 71 73 User s Guide 334 ...
Page 348: ...Chapter 50 IGMP Commands IES 1248 71 73 User s Guide 348 ...
Page 352: ...Chapter 51 Packet Filter Commands IES 1248 71 73 User s Guide 352 ...
Page 362: ...Chapter 53 Firmware and Configuration File Maintenance IES 1248 71 73 User s Guide 362 ...
Page 394: ...Chapter 55 ADSL Commands IES 1248 71 73 User s Guide 394 ...
Page 418: ...Chapter 56 Virtual Channel Management IES 1248 71 73 User s Guide 418 ...
Page 424: ...Chapter 57 ACL Commands IES 1248 71 73 User s Guide 424 ...
Page 436: ...Chapter 58 Troubleshooting IES 1248 71 73 User s Guide 436 ...
Page 437: ...437 PART VI Appendices and Index Product Specifications 439 Legal Information 449 Index 457 ...
Page 438: ...438 ...
Page 448: ...Appendix B Removing and Installing a Fuse IES 1248 71 73 User s Guide 448 ...
Page 452: ...Appendix C Legal Information IES 1248 71 73 User s Guide 452 ...