Cisco 3825 Software Configuration Manual page 203
Mobile wireless edge router
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Appendix A
Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference
sequencing
To configure the direction in which sequencing is enabled for data packets in a Layer 2 PW, use the
sequencing command in the pseudowire-class configuration mode. To remove the sequencing
configuration from the pseudowire-class, use the no form of this command.
Syntax Description
transmit
receive
both
resync
number
Defaults
Sequencing is disabled.
Command Modes
Pseudowire-class configuration
Command History
Release
12.0(23)S
12.0(29)S
12.0(30)S
12.3(2)T
12.4(12)MR2
Usage Guidelines
When you enable sequencing using any of the available options, the sending of sequence numbers is
automatically enabled and the remote provider edge (PE) peer is requested to send sequence numbers.
Out-of-order packets received on the PW are dropped only if you use the sequencing receive or
sequencing both command.
It is useful to specify the resync keyword for situations when the disposition router receives many
out-of-order packets. It allows the router to recover from situations where too many out-of-order packets
are dropped.
Set the sequence number to 0 in the slow path before packets are punted to the local CPU, because
packets may become out of order.
OL-15667-03
sequencing {transmit | receive | both | resync {number}}
no sequencing {transmit | receive | both | resync {number}}
Updates the Sequence Number field in the headers of data packets sent over
the PW according to the data encapsulation method that is used.
Keeps the value in the Sequence Number field in the headers of data packets
received over the PW. Out-of-order packets are dropped.
Enables both the transmit and receive options.
Enables the reset of packet sequencing after the disposition router receives
a specified number of out-of-order packets.
The number of out-of-order packets that cause a reset of packet sequencing.
The range is 5 to 65,535.
Modification
This command was introduced for Layer 2 Tunnel Protocol Version 3 (L2TPv3).
This command was updated to support Any Transport over MPLS (AToM).
The resync keyword was added.
This command was integrated into Cisco IOS Release 12.3(2)T.
This command was integrated into Cisco IOS Release 12.4(12)MR2.
Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
sequencing
A-71
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