Fragment Packet Loss Prevention

You can set the maximum amount of bandwidth (in the max-untrusted-signaling parameter) you want to use for untrusted packets. However, because untrusted and fragment packets share the same amount of bandwidth for policing, any flood of untrusted packets can cause the Oracle® Enterprise Session Border Controller to drop fragment packets.

To prevent fragment packet loss, you can set the fragment-msg-bandwidth. When it is set to any value other than 0 (which disables it), the Oracle® Enterprise Session Border Controller:

• Provides for a separate policing queue for fragment packets (separate from that used for untrusted packets)
• Uses this new queue to prevent fragment packet loss when there is a flood from untrusted endpoints.

When you set up a queue for fragment packets, untrusted packets likewise have their own queue—meaning also that the max-untrusted-signaling and min-untrusted-signaling values are applied to the untrusted queue.