Manual Chapter :
Source port
Applies To:
Show Versions
BIG-IP LTM
- 15.1.8, 15.1.7, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0, 15.0.1, 15.0.0, 14.1.5, 14.1.4, 14.1.3, 14.1.2, 14.1.0, 14.0.1, 14.0.0, 13.1.5, 13.1.4, 13.1.3, 13.1.1, 13.1.0
Source port
MRF allows setting the source port used on outgoing connections through the source-port
attribute of a transport-config object. Setting this attribute to a non-zero value causes the
source port of the outgoing connection to be set to the provided value. If set to zero an
ephemeral port value will be used.
Pinning the source port to a fixed value will limit the number of connections available to the
host. There can only be one connection using the local and remote tuples (IP/port/rtdom_id) and
IP protocol (TCP/UDP/SCTP). Attempts to create another connection using the same addresses and IP
protocol will fail.
For this reason it is not recommended to use set the source port for outgoing connections
except when using a connection-mode of 'per-peer' and a number-connections of '1'.
Likewise trying to use the same host from peers with different transport settings
(transport-config and/or virtual) and setting the source port will produce failures (unless
different SNAT pools are used).
