Limiting the Number of IP Addresses Supplied by DHCP Local Server
You can specify the maximum number of IP addresses that the DHCP local server
can supply to each VPI/VCI, VLAN, Ethernet subnetwork, or POS access interface
type, or to a particular interface or subinterface.
You can set global limits for a given interface type—all interfaces of that type that
are subsequently created, whether dynamically or statically, inherit that limit value.
You can also set an individual interface limit for a specific interface and override the
global limit configured for that interface type. For example, suppose the VLAN
interface type limit is five. You can specify a limit of 10 for the VLAN interface
FastEthernet 1/0.100. All other VLAN interfaces retain the global limit of five.
The global limits for interface types and the individual interface limits set on static
interfaces are kept in NVS. These values are restored during a switchover or a reload.
When you assign an individual limit to a dynamic interface, that limit is in force only
until either a switchover or reload takes place. After the switchover or reload, if the
action that caused the dynamic interface to be created occurs again, a new dynamic
interface is created. The new dynamic interface then inherits the limit set by the
global values based on the type of interface that is created.
■
To set a global limit for an interface type:
host1(config)#
ip dhcp-local limit ethernet 6
■
To set a limit for a specific interface:
host1(config)#
ip dhcp-local limit interface atm 3/1 15
NOTE:
Limits that you specify on dynamic interfaces are not restored after a
switchover or reboot.
Excluding IP Addresses from Address Pools
You can use the
ip dhcp-local excluded-address
command to specify IP addresses
that you do not want the DHCP local server to supply from the default address pool.
You might exclude addresses if because those addresses are already used by devices
on the subnetwork.
You can exclude a single IP address or a range of addresses. To exclude a range, you
specify the start-of-range IP address and the end-of-range IP address.
■
To exclude a specific IP address:
host1(config)#
ip dhcp-local excluded-address 10.10.3.4
■
To exclude a range of IP addresses:
host1(config)#
ip dhcp-local excluded-address 10.10.3.4 10.10.3.100
Limiting the Number of IP Addresses Supplied by DHCP Local Server
■
473
Chapter 19: Configuring DHCP Local Server
Содержание JUNOSE 11.0.X MULTICAST ROUTING
Страница 6: ...vi...
Страница 28: ...xxviii Table of Contents JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 36: ...xxxvi List of Tables JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 42: ...2 Managing Remote Access JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 204: ...164 Managing RADIUS and TACACS JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 274: ...234 CLI Commands Used to Modify RADIUS Attributes JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 292: ...252 Monitoring RADIUS Relay Server JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 336: ...296 RADIUS Client Terminate Reasons JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 368: ...328 Managing L2TP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 408: ...368 Configuring the Weighted Load Balancing Method JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 444: ...404 PPP Accounting Statistics JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 492: ...452 Monitoring Operational Status within the Current VR Context JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 494: ...454 Managing DHCP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 510: ...470 DHCP Local Server Configuration Tasks JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 528: ...488 Configuring the Router to Work with the SRC Software JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 556: ...516 Configuring DHCP Relay Proxy JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 616: ...576 Managing the Subscriber Environment JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 632: ...592 Subscriber Management Configuration Examples JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 636: ...596 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 672: ...632 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 674: ...634 Managing Subscriber Services JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 767: ...Part 7 Index Index on page 729 Index 727...
Страница 768: ...728 Index JUNOSe 11 0 x Broadband Access Configuration Guide...