Manual

Cisco Packet Data Serving Node (PDSN) Release 2.0
Configuration Tasks
64
12.3(11)T
For the ip dhcp pool pdsn-pool command, the subnet is 13.0.0.0 and the mask defines the size of the
pool. The subnet prefix-length defines the size of the subnet chunks using standard CIDR bit count
notation to determine the number of addresses that are configured in each subnet lease. Here is a sample
of the show dhcp ip pool command output:
Pool pdsn-pool :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 524288
Leased addresses : 4096
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased addresses
13.0.48.0 13.0.0.0 - 13.7.255.255 4096
In this example, one subnet of 4096 addresses has been leased out. It is leased to PDSN1 in this example.
In the following example, a second PDSN pool is shown for reference, pdsn-pool-2. This shows different
values used for the pool size and the subnet chunks. Nothing is presently leased.
Pool pdsn-pool-2 :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 65536
Leased addresses : 0
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased addresses
14.0.0.0 14.0.0.0 - 14.0.255.255 0
OSPF is configured to log adjacency changes for network 10.10.1.0, which is the GigEthernet0/0.101
interface.
Currently, the ODAP Subnet Allocation Server only allows one network command under the ip dhcp
pool name-of-pool command. To support disjointed subnets, you must define a pool that is large enough
to contain all assigned IP addresses. You cn use the following global configuration command:
ip dhcp excluded-address low-address [high-address]
This command informs the ODAP Subnet Allocation Server to not lease these addresses to the ODAP
client. Issuing this command help some configurations with disjointed IP address space, but may not
work in other cases, depending on the range of IP addresses.