IP Helper Commands
711
•
dest-udp-port
— A destination UDP port number from 0 to 65535.
•
port-name
— The destination UDP port may be optionally specified by its
name. Whether a port is specified by its number or its name has no effect
on behavior. The names recognized are as follows:
dhcp
(port 67),
domain
(port 53),
isakmp
(port 500),
mobile-ip
(port 434),
nameserver
(port 42),
netbios-dgm
(port 138),
netbios-ns
(port 137),
ntp
(port 123),
pim-auto-
rp
(port 496),
rip
(port 520),
tacacs
(port 49),
tftp
(port 69), and
time
(port 37). Other ports must be specified by number.
Default Configuration
No helper addresses are configured.
Command Mode
Global Configuration mode.
User Guidelines
This command can be invoked multiple times, either to specify multiple
server addresses for a given port number or to specify multiple port numbers
handled by a specific server.
The command no ip helper-address with no arguments clears all global IP
helper addresses.
Example
To relay DHCP packets received on any interface to two
DHCP servers, 10.1.1.1 and 10.1.2.1, use the following
commands:
console#config
console(config)#ip helper-address 10.1.1.1 dhcp
console(config)#ip helper-address 10.1.2.1 dhcp
Summary of Contents for PowerConnect 6224
Page 54: ...54 Contents show ip https 1369 state 1370 ...
Page 134: ...134 Command Groups ...
Page 186: ...186 Using the CLI ...
Page 216: ...216 ACL Commands ...
Page 236: ...236 Address Table Commands ...
Page 250: ...250 CDP Interoperability Commands ...
Page 256: ...256 DHCP Layer 2 Relay Commands Example console config dhcp l2relay vlan 10 340 345 ...
Page 284: ...284 Dynamic ARP Inspection Commands ...
Page 318: ...318 Ethernet Configuration Commands ...
Page 330: ...330 GVRP Commands ...
Page 344: ...344 IGMP Snooping Commands ...
Page 368: ...368 IP Addressing Commands ...
Page 378: ...378 IPv6 Access List Commands ...
Page 386: ...386 IPv6 MLD Snooping Querier Commands MLD Version Indicates the version of MLD ...
Page 393: ...LACP Commands 393 Oper Key 29 Partner System Priority 0 MAC Address 000000 000000 Oper Key 14 ...
Page 394: ...394 LACP Commands ...
Page 404: ...404 Link Dependency Commands ...
Page 432: ...432 LLDP Commands ...
Page 446: ...446 Port Monitor Commands 1 Enable 1 g10 1 g8 Rx Tx ...
Page 572: ...572 TACACS Commands ...
Page 610: ...610 VLAN Commands ...
Page 616: ...616 Voice VLAN Commands ...
Page 618: ...618 802 1x Commands 802 1x Option 81 radius server attribute 4 ...
Page 656: ...656 ARP Commands IP Address MAC Address Interface Type Age console ...
Page 822: ...822 IPv6 Routing Commands ...
Page 826: ...826 Loopback Interface Commands ...
Page 828: ...828 Multicast Commands show ip pimsm rphash show ip pimsm rp mapping ...
Page 854: ...854 Multicast Commands ...
Page 930: ...930 OSPF Commands ...
Page 933: ...OSPFv3 Commands 933 show ipv6 ospf virtual link show ipv6 ospf virtual link brief ...
Page 1004: ...1004 PIM SM Commands ...
Page 1014: ...1014 Router Discovery Protocol Commands ...
Page 1054: ...1054 Autoconfig Commands boot host dhcp boot host retry count show boot ...
Page 1058: ...1058 Autoconfig Commands ...
Page 1094: ...1094 Captive Portal Commands ...
Page 1110: ...1110 Clock Commands ...
Page 1130: ...1130 Configuration and Image File Commands ...
Page 1142: ...1142 Denial of Service Commands ...
Page 1178: ...1178 Power Over Ethernet Commands ...
Page 1220: ...1220 Serviceability Tracing Packet Commands ...
Page 1232: ...1232 Sflow Commands ...
Page 1262: ...1262 SNMP Commands ...
Page 1346: ...1346 System Management Commands 4 5 ...
Page 1350: ...1350 Telnet Server Commands ...
Page 1372: ...1372 Web Server Commands ...