Specifications

Multiprotocol Label Switching Commands
cell-packing
MP-18
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
cell-packing
To enable ATM over Multiprotocol Label Switching (MPLS) or Layer 2 Tunneling Protocol Version 3
(L2TPv3) to pack multiple ATM cells into each MPLS or L2TPv3 packet, use the cell-packing command
in the appropriate configuration mode. To disable cell packing, use the no form of this command.
cell-packing [ce
lls] [mcpt-timer timer]
no cell-packing
Syntax Description
Command Default Cell packing is disabled.
Command Modes Interface configuration
L2transport VC configuration—for ATM VC
L2transport VP configuration—for ATM VP
VC class configuration
Command History
Usage Guidelines The c
ell-packing command is available only if you configure the ATM VC or virtual path (VP) with
ATM adaptation layer 0 (AAL0) encapsulation. If you specify ATM adaptation layer 5 (AAL5)
encapsulation, the command is not valid.
cells (Optional) The number of cells to be packed into an MPLS or L2TPv3 packet.
The range is from 2 to the maximum transmission unit (MTU) of the interface
d
ivided by 52. The default number of ATM cells to be packed is the MTU of
the interface divided by 52.
If the number of cells packed by the peer provider edge router exceeds this
lim
it, the packet is dropped.
mcpt-timer tim
er (Optional) Specifies which timer to use for maximum cell-packing timeout
(MCPT). Valid values are 1, 2, or 3. The default value is 1.
Release Modification
12.0(25)S This command was introduced.
12.0(29)S Support for L2TPv3 sessions was added.
12.0(30)S This command was updated to enable cell packing as part of a virtual circuit
(
VC) class.
12.0(31)S This command was integrated into Cisco IOS Release 12.0(31)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB.
12.4(11)T This command was integrated into Cisco IOS Release 12.4(11)T.
12.2(33)SRB This command was integrated into Cisco IOS Release 12.2(33)SRB.
12.2(33)SXH This command was integrated into Cisco IOS Release 12.2(33)SXH.
12.2(33)SRE This command was modified. Support for static pseudowires was added.