/Net/cernvax/userd/tbl/denise/UpdateNameTables.html

# Updating node name tables

The CERN master copy of DECnet node names is VXCERN. CERN nodes are added to the NCP data base on VXCRNA automatically by the Oracle data base software which allocates the node numbers. VXCRNB is updated soon afterwards and the Interlink gateways (CERNVM and CRNVMB) are updated manually on roughly a weekly basis or on request. (See version on VM)

## To check if a node is defined on VXCERN:

    	NCP> tell vxcern sho node <name>

## To check if a node is defined locally:

    	NCP> sho node <name>

## To define a new node name:

    	NCP> define node x.y name <name>
    	NCP> set node x.y all

where x.y refers to node number y in area x.

The above commands must be issued from a privileged account. The define command updates the permanent data base. The set command updates the volatile data base from the permanent.

## To update node names from the master copy on VXCRNB:

                              ! Keep a copy of the current data base
                              ! (just in case you don't like the new one)
    	$ copy sys$system:netnode_remote.dat .old
                              ! Define NCP
    	$ ncp := $ncp
                              ! Copy node names from VXCRNB - it's a busy
                              ! m/c so preferrably pick a quiet time
    	$ ncp copy known nodes from vxcrnb using vol to perm
                              ! Your permenant data base is now updated.
                              ! At a quiet moment update the volatile
                              ! data base using the commands below
                              ! (on every node in a cluster).
                              ! Alternatively, the volatile data base is
                              ! updated next time you start DECnet.
    	$ ncp clear known nodes all
    	$ ncp set known nodes all

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