+&ditem(RMR_CTL_PORT)
+ This variable defines the port that RMR should open for communications
+ with Route Manager, and other RMR control applications.
+ If not defined, the port 4561 is assumed.
+
+ &space
+ Previously, the &cw(RMR_RTG_SVC) (route table generator service port)
+ was used to define this port.
+ However, a future version of Route Manager will require RMR to connect
+ and request tables, thus that variable is now used to supply the Route
+ Manager well known address and port.
+
+ &space
+ To maintain backwards compatablibility with the older Route Manager versions,
+ the presence of this variable in the environment will shift RMR's behaviour
+ with respect to the default value used when &cw(RMR_RTG_SVC) is &bold(not) defined.
+
+ &space
+ When &cw(RMR_CTL_PORT) is &bold(defined^:)
+ RMR assumes that Route Manager requires RMR to connect and request table
+ updates is made, and the default well known address for Route manager
+ is used (routemgr:4561).
+
+ &space
+ When &cw(RMR_CTL_PORT) is &bold(undefined^:)
+ RMR assumes that Route Manager will connect and push table updates, thus the
+ default listen port (4561) is used.
+
+ &space
+ To avoid any possible misinterpretation and/or incorrect assumptions on the part
+ of RMR, it is recommended that both the &cw(RMR_CTL_PORT) and &cw(RMR_RTG_SVC)
+ be defined.
+ In the case where both variables are defined, RMR will behave exactly as is
+ communicated with the variable's values.
+ &half_space
+
+&ditem(RMR_RTG_SVC)
+ The value of this variable depends on the Route Manager in use.
+ &space
+ When the Route Manager is expecting to connect to an xAPP and push
+ route tables, this variable must indicate the &cw(port) which RMR should
+ use to listen for these connections.
+
+ &space
+ When the Route Manager is expecting RMR to connect and request a
+ table update during initialisation, the variable should be the
+ &cw(host:port) of the Route Manager process.
+
+ &space
+ The &cw(RMR_CTL_PORT) variable (added with the support of sending table update
+ requests to Route manager), controls the behaviour if this variable is not set.
+ See the description of that variable for details.