Configuring a Realm

To configure a realm:

In Superuser mode, type configure terminal and press Enter.
```
ORACLE# configure terminal
```
Type media-manager and press Enter to access the system-level configuration elements.
```
ORACLE(configure)# media-manager
```
Type realm-config and press Enter. The system prompt changes to let you know that you can begin configuring individual parameters.
```
ORACLE(media-manager)# realm-config
ORACLE(realm-config)#
```
If configuring an existing realm, enter the select command to select the realm.
early-media-allow—Enter the early media suppression rule for the realm. The valid values are:
- both—Early media is allowed in both directions
- reverse—Early media received by Oracle® Enterprise Session Border Controller in the reverse direction is allowed
- none—Early media is blocked
additional-prefixes—Enter a single or a comma-delimited list of IP address prefixes to use in addition to the value of the addr-prefix parameter.
```
<IPv4> [/<number of bits>]
```
<IPv4> is a valid IPv4 address and <number of bits> is the number of bits to use to match an IP address with the address prefix. Not specifying <number of bits> implies that all 32 bits are used for matching.

Enclose the list between quotes if there is any space between a comma and the next address prefix.

You can add and remove address prefixes to and from the list:
- add-additional-prefixes adds one or more additional prefixes
```
add-additional-prefixes 192.168.201.69
```
- remove-additional-prefixes removes one or more additional prefixes
```
remove-additional-prefixes 192.168.201.69
```
  If using multiple address prefixes, enter a comma-delimited list.

Save and activate your configuration.

For example:

ORACLE# configure terminal
ORACLE(configure)# media-manager
ORACLE(media-manager)# realm-config
ORACLE(realm-config)# additional-prefixes 192.168.200.0/24,192.168.201.68
ORACLE(realm-config)# done
realm-config
        identifier                     early-media
        addr-prefix                    0.0.0.0
        network-interfaces
                                       media2:0
        mm-in-realm                    disabled
        mm-in-network                  enabled
        msm-release                    disabled
        qos-enable                     disabled
        max-bandwidth                  0
        max-latency                    0
        max-jitter                     0
        max-packet-loss                0
        observ-window-size             0
        parent-realm
        dns-realm
        media-policy
        in-translationid
        out-translationid
        in-manipulationid
        out-manipulationid
        class-profile
        average-rate-limit             0
        access-control-trust-level     none
        invalid-signal-threshold       0
        maximum-signal-threshold       0
        untrusted-signal-threshold     0
        deny-period                    30
        symmetric-latching             disabled
        pai-strip                      disabled
        trunk-context
        early-media-allow              reverse
        additional-prefixes            192.168.200.0/24
192.168.201.69
        last-modified-date             2006-05-11 06:47:31