Cisco Cisco Packet Data Gateway (PDG)
SGSN Global Configuration Mode Commands
▀ bvc-unblock
▄ Command Line Interface Reference, StarOS Release 16
8244
bvc-unblock
This command enables (disabled by default) or disables the SGSN to unblock blocked BVCs based on the receipt of
uplink packets from the BSC.
uplink packets from the BSC.
Product
SGSN
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > SGSN Global Configuration
configure > sgsn-global
Entering the above command sequence results in the following prompt:
[local]host_name(config-sgsn-global)#
Syntax
bvc-unblock { data-or-flow-control | flow-control | ul-data }
[ default | no ] bvc-unblock
default
Include
default
with the command to disable the function.
no
Include
no
with the command to disable this function.
data-or-flow-control
Enables the BVC-Unblock function when the SGSN receives either a FLOW-CONTROL-BVC packet or a
UL-UNITDATA packet.
UL-UNITDATA packet.
flow-control
Enables the BVC-Unblock function when the SGSN receives a FLOW-CONTROL-BVC packet.
ul-data
Enables the BVC-Unblock function when the SGSN receives a UL-UNITDATA packet.
Usage
Configurations defined with this command are common to all NSE defined for the SGSN.
This command is useful if there is a BVC status mismatch across different SGSN managers (such as the
sessmgr and the linkmgr) when the BSC sends BVC-Block (SGSN should move to BLOCKED) followed by
a BVC-Reset (SGSN should move to UNBLOCKED). Such mismatches can easily occur, particularly on Gb-
IP network connection, when one link receives the BVC-Block and a different link receives the BVC-Reset
with little delay between the two.
This command is useful if there is a BVC status mismatch across different SGSN managers (such as the
sessmgr and the linkmgr) when the BSC sends BVC-Block (SGSN should move to BLOCKED) followed by
a BVC-Reset (SGSN should move to UNBLOCKED). Such mismatches can easily occur, particularly on Gb-
IP network connection, when one link receives the BVC-Block and a different link receives the BVC-Reset
with little delay between the two.