Cisco Cisco Network Registrar 7.1 릴리즈 노트

This following are the topics covered in this section:

This following are the topics covered in this section:

CNR now supports running in a VMWARE (ESX Server 3.5) environment for Linux RedHat 4.0, Linux 
5.0, and Windows Server 2003. 

The dynamic lease notification feature is modified to include the following:

Changing the processing of active leasequery sessions on reload in order to reduce or remove the 
necessity for the dynamic lease notification client to issue a bulk leasequery when the server returns 
to service. The detailed description is given in the 

Allowing extensions to control the sending of active leasequery packet to the dynamic lease 
notification client. The detailed description is given in the 

.

In CNR 7.1, a DHCP server reload required an active leasequery client to issue a bulk leasequery to 
capture any changes between the time the server was shutting down and the client reconnected to the 
server after the server restarted.

While a client can still do this, the DHCP server is enhanced as follows to reduce the need for this bulk 
leasequery.

On server shutdown or reload, the DHCP server examines the queue of leases which it has queued 
up for each active leasequery connection. If the queue is empty, it means that all the notifications 
for that connection have been sent, at least into the TCP connection and are not waiting on the DHCP 
server. So, if the queue is empty and the TCP connection is not blocked, the DHCP server will send 
a DHCPLEASEQUERYSTATUS message with a status-code of QueryTerminated. This 
DHCPLEASEQUERYSTATUS message includes a base-time of the server's shutdown time. The 
client, when it reconnects to the server, should then issue an active leasequery request with a 
query-start-time of this base-time.