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:

• Specify an addressing scheme.

  host1(config)#ip address-pool local

• 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

• 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

• (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

  host1(config-domain-map)#backup-address-pool-name backup_poolB

• Delete an address pool.

  host1(config)#no ip local pool addrpool_10

  Note: If a pool or range is deleted and addresses are outstanding, the AAA server logs out the clients using the addresses.

• Create a shared local address pool.

  host1(config)#ip local shared-pool Shared_LAS_Pool_A DHCP_Pool_1

• Delete a shared local address pool.

  host1(config)#no ip local shared-pool Shared_LAS_Pool_C

• Set SNMP variables by specifying an existing pool name and values.

  host1(config)#ip local pool addrpool_10 warning 90 80

address-pool-name

• Use to specify the name of the primary local address pool from which the router allocates addresses for the domain that you are configuring.
• If the authentication server does not return an address, the router allocates an address from this pool. The authentication server may override this pool name using RADIUS attributes such as Framed-Pool.
• The primary pool name is a character string up to 16 characters long.
• Example

  host1(config)#aaa domain-map westford.com

  host1(config-domain-map)#address-pool-name poolA

• Use the no version to remove the primary local address pool name.
• See address-pool-name

backup-address-pool-name

• Use to specify the name of the backup local address pool from which the router allocates addresses for the domain that you are configuring, if the primary local address pool is fully allocated.
• The backup local address pool takes effect only if you configured a valid primary local address pool.
• If the primary local address pool has been fully allocated, and if you did not configure a backup local address pool, the request is denied. This behavior is the same as what existed in previous JUNOSe releases.
• If the authentication server returns the backup local address pool name in the RADIUS-Access-Accept message, this value overrides the backup address pool configured using the backup-address-pool-name command.
• You can specify a local address pool to be the backup address pool for some users and the primary pool for other users.
• You can also use the same local address pool as the backup address pool for subscribers using different primary address pools.
• The backup pool name is a character string up to 16 characters long.
• Example

  host1(config)#aaa domain-map westford.com

  host1(config-domain-map)#backup-address-pool-name backup_poolB

• Use the no version to remove the backup address pool name.
• See backup-address-pool-name.

ip address-pool

• Use to specify the addressing scheme: dhcp, local, or none.
• The addressing scheme none returns a special indicator to AAA that enables the remote PPP client to assign its own address.
• Example

  host1(config)#ip address-pool dhcp

• Use the no version to specify the default, local.
• See ip address-pool

ip local alias

• Use to create an alias for an existing local address pool. The IP address is allocated from the pool specified by the alias rather than from the pool specified in the IP address request.
• An alias name may contain up to 16 characters.
• You can configure a maximum of 32 aliases per virtual router.
• A local address pool can have multiple aliases.
• You can set the name of the alias to match the name of a local address pool; however, the two names used in the alias cannot be the same.
• You can modify an existing alias with a different local address pool name.
• When a local address pool is deleted, all aliases with the matching pool name are also deleted.
• Example

  host1(config)#ip local alias groupB pool-name addrpool_10

• Use the no version to remove the alias name.
• See ip local alias

ip local pool

• Use to map an address pool name to a range of local addresses.
• You can create a pool with no address ranges configured for it.
• A name may contain up to 16 characters.
• Example

  host1(config)#ip local pool addrpool_10 192.168.56.10 192.168.56.15

• Use the no version to remove the local pool (all ranges), or the specified range.
• See ip local pool

ip local pool snmpTrap

• Use to enable SNMP pool utilization traps.
• Example

  host 1(config)#ip local pool addr_test snmpTrap

• Use the no version to disable SNMP pool utilization traps.
• See ip local pool snmpTrap

ip local pool warning

• Use to set SNMP utilization warning threshold values.
• Example

  host1(config)#ip local pool addr_test warning 90 80

• Use the no version to reset the attributes to their default values; high threshold 85, abated threshold 75.
• See ip local pool warning

ip local shared-pool

• Use to create a local shared address pool and to specify the DHCP address pool that provides the addresses.
• You can reference a DHCP address pool that has not yet been configured.
• Example

  host1(config)#ip local shared-pool sharedPool11 dhcpPool6

• Use the no version to delete a specific local shared address pool.
• See ip local shared-pool

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