Alcatel-Lucent 7750 SR OS Service Manual page 1351

slice-size
Syntax slice-size bytes
no slice-size
Context config>mirror>mirror-dest
Description
This command enables mirrored frame truncation and specifies the maximum size, in bytes, of a mir-
rored frame that can be transmitted to the mirror destination.
This command enables mirroring larger frames than the destination packet decode equipment can
handle. It also allows conservation of mirroring resources by limiting the size of the packet stream
through the router and the core network.
When defined, the mirror slice-size creates a threshold that truncates a mirrored frame to a specific
size. For example, if the value of 256 bytes is defined, a frame larger than 256 bytes will only have
the first 256 bytes transmitted to the mirror destination. The original frame is not affected by the trun-
cation. The mirrored frame size may increase if encapsulation information is added during transmis-
sion through the network core or out the mirror destination SAP to the packet/protocol decode
equipment.
The actual capability of the 7750 SR to transmit a sliced or non-sliced frame is also dictated by the
mirror destination SDP path-mtu and/or the mirror destination SAP physical MTU. Packets that
require a larger MTU than the mirroring destination supports are discarded if the defined slice-size
does not truncate the packet to an acceptable size.
The no form of the command disables mirrored packet truncation.
Default
no slice-size — Mirrored packet truncation is disabled.
Parameters
bytes — The number of bytes to which mirrored frames will be truncated, expressed as a decimal
7750 SR OS Services Guide
integer.
Values
128 — 9216
Mirror Services
Page 1353