Cisco 3825 - Manual (Page 203)

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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference
sequencing
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.
sequencing {transmit | receive | both | resync {number}}
no sequencing {transmit | receive | both | resync {number}}
Syntax Description
Defaults Sequencing is disabled.
Command Modes Pseudowire-class configuration
Command History
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.
transmit Updates the Sequence Number field in the headers of data packets sent over
the PW according to the data encapsulation method that is used.
receive Keeps the value in the Sequence Number field in the headers of data packets
received over the PW. Out-of-order packets are dropped.
both Enables both the transmit and receive options.
resync Enables the reset of packet sequencing after the disposition router receives
a specified number of out-of-order packets.
number The number of out-of-order packets that cause a reset of packet sequencing.
The range is 5 to 65,535.
Release Modification
12.0(23)S This command was introduced for Layer 2 Tunnel Protocol Version 3 (L2TPv3).
12.0(29)S This command was updated to support Any Transport over MPLS (AToM).
12.0(30)S The resync keyword was added.
12.3(2)T This command was integrated into Cisco IOS Release 12.3(2)T.
12.4(12)MR2 This command was integrated into Cisco IOS Release 12.4(12)MR2.