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The DHCP attributes do not apply to shared local address pools; for example,
the lease time for shared local address pools is infinite.
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When you delete the referenced DHCP address pool, DHCP notifies the local
address server and logs out all subscribers that are using addresses from the
deleted pool.
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When you delete a shared local address pool, the local address server logs out
the subscribers that are using addresses from the deleted pool, then notifies
DHCP and releases the addresses.
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If the chain of linked DHCP address pools is broken, no action is taken and the
existing subscribers retain their address. However, the DHCP local address pools
that are no longer part of the chain are now unable to provide any new addresses.
Example
This following commands create the shared address pools in Figure 2 on page 55:
host1(config)#
ip local shared-pool Shared_LAS_Pool_A DHCP_Pool_1
host1(config)#
ip local shared-pool Shared_LAS_Pool_B DHCP_Pool_1
host1(config)#
ip local shared-pool Shared_LAS_Pool_C DHCP_Pool_3
SNMP Thresholds
An address pool has SNMP thresholds associated with it that enable the local address
server to signal SNMP traps when certain conditions exist. These thresholds include
high utilization threshold and abated utilization threshold. If a pool’s outstanding
addresses exceed the high utilization threshold and the SNMP trap signaling is enabled,
SNMP is notified. Likewise, when a pool’s utilization drops below the abated threshold
utilization threshold, SNMP is notified.
Configuring a Local Address Server
You can create, modify, and delete address pools. You can display address pool
information or status with the
show ip local pool
command. The following are
examples of tasks you can configure:
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Specify an addressing scheme.
host1(config)#
ip address-pool local
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Map an address pool name to a range of local addresses. You can also use this
command to add additional ranges to a pool.
host1(config)#
ip local pool addrpool_10 192.168.56.10 192.168.56.15
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Map a primary local address pool name to a domain name.
host1(config)#
aaa domain-map westford.com
host1(config-domain-map)#
address-pool-name poolA
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(Optional) Map a backup address pool to a domain name, which is used for
address allocation if the primary local address pool is fully allocated.
host1(config)#
aaa domain-map westford.com
56
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Configuring Local Address Servers
JUNOSe 11.1.x Broadband Access Configuration Guide
Содержание JUNOSE 11.1.X - BROADBAND ACCESS CONFIGURATION GUIDE 6-4-2010
Страница 6: ...vi...
Страница 28: ...xxviii Table of Contents JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 36: ...xxxvi List of Tables JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 42: ...2 Managing Remote Access JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 208: ...168 Monitoring IPv6 Local Pool Statistics for DHCP Prefix Delegation JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 210: ...170 Managing RADIUS and TACACS JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 280: ...240 CLI Commands Used to Modify RADIUS Attributes JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 298: ...258 Monitoring RADIUS Relay Server JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 342: ...302 RADIUS Client Terminate Reasons JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 374: ...334 Managing L2TP JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 414: ...374 Configuring the Weighted Load Balancing Method JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 450: ...410 PPP Accounting Statistics JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 498: ...458 Monitoring Operational Status within the Current VR Context JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 500: ...460 Managing DHCP JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 516: ...476 DHCP Local Server Configuration Tasks JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 562: ...522 Configuring DHCP Relay Proxy JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 622: ...582 Managing the Subscriber Environment JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 638: ...598 Subscriber Management Configuration Examples JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 642: ...602 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 678: ...638 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 680: ...640 Managing Subscriber Services JUNOSe 11 1 x Broadband Access Configuration Guide...
Страница 773: ...Part 7 Index Index on page 735 Index 733...
Страница 774: ...734 Index JUNOSe 11 1 x Broadband Access Configuration Guide...