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The SBC SWe Cloud provides a system table that you can populate with additional metavariables to add to the metadata in an existing SBC deployment. The metavariable values in the table become available to the SBC instance without having to rebuild it. For example, you can add the metavariable values needed to configure an additional SIP signaling port in a deployed SBC instance using the following set of commands. The configuration needs to be done on the Headend SBC in the SBC SWE cluster.

1. Check the currently defined metavariables in the metaVariable table.

   Code Block

   > show table system metaVariable CE NAME NAME VALUE --------------------------------------------------- isbctest-10.34.195.79 IF0.DHCP False isbctest-10.34.195.79 IF0.GWV4 10.34.194.1 isbctest-10.34.195.79 IF0.IPV4 10.34.194.79 isbctest-10.34.195.79 IF0.Port Mgt0 isbctest-10.34.195.79 IF1.DHCP False isbctest-10.34.195.79 IF1.GWV4 10.34.195.1 isbctest-10.34.195.79 IF1.IPV4 10.34.195.79 isbctest-10.34.195.79 IF1.Port Ha0 isbctest-10.34.195.79 IF2.GWV4 10.34.196.1 isbctest-10.34.195.79 IF2.IPV4 10.34.196.79 isbctest-10.34.195.79 IF2.Port Pkt0 isbctest-10.34.195.79 IF3.GWV4 10.34.197.1 isbctest-10.34.195.79 IF3.IPV4 10.34.197.79 isbctest-10.34.195.79 IF3.Port Pkt1 isbctest-10.34.195.79 IF0.PrefixV4 24 isbctest-10.34.195.79 IF1.PrefixV4 24 isbctest-10.34.195.79 IF2.PrefixV4 24 isbctest-10.34.195.79 IF3.PrefixV4 24 [ok]

2. In the metaVariableDynamic table, add new metavariables to define the interfaces you plan to use for the additional SIP signaling port. You must run the commands twice to create the variables on both the active and standby nodes.

   Code Block
   % set system metaVariableDynamic ceName isbctest-10.34.195.79 name IF4.IPV4 value 10.34.196.80 [ok] % commit [ok] Commit complete. % set system metaVariableDynamic ceName isbctest-10.34.195.80 name IF4.IPV4 value 10.34.196.80 [ok] % commit [ok] Commit complete.

3. Verify that the metavariables were added successfully.

   Code Block
   > show table system metaVariableDynamic CE NAME NAME VALUE ----------------------------------------------- isbctest-10.34.195.79 IF4.IPV4 10.34.196.80 isbctest-10.34.195.80 IF4.IPV4 10.34.196.80  [ok]

4. Create the SIP signaling port using the newly created metavariables.

   Code Block
   % set addresscontext default zone ZONE1 sipSigPort 3 state enabled portNumber 5060 transportProtocolsAllowed sip-udp ipInterfaceGroup LIG1 ipVarV4 IF4.IPV4

   Where: 
   sipSigPort "3" refers to the index number of the SIP signaling port. In the example, the command creates SIP signaling port 3 with a port number of 5060. The SIP signaling port supports UDP transport and is added to the LIG1 IP interface group. The previously added metavariable IF4.IPV4 specifies that the IP address for the SIP signaling port is 10.34.196.80.

5. Verify that the metavariable IP address is shown in the configuration for sipSigPort 3.

   Code Block
   > show addressContext default zone ZONE1 sipSigPort sipSigPort 3 { ipInterfaceGroupName LIG1; portNumber 5060; state enabled; transportProtocolsAllowed sip-udp; ipVarV4 IF4.IPV4; }

   Info
   title Note
   You cannot add an entry to the system metaVariableDynamic table , if the entry already exists in the system metaVariable table. When you add an entry in the metaVariableDynamictable, make sure to add an entry for each of the nodes in the cluster (active and standby). Ensure the IP addresses you configure in the metaVariableDynamic table are appropriately configured on the cloud hosting the SBC VM, so those addresses are reachable externally.