D-Link DGS-3700 Series Reference Manual page 531

DGS-3700 Series Layer 2 Managed Gigabit Ethernet Switch CLI Reference Guide
config cfm ccm_fwd
Parameters
Restrictions
Example usage:
To configure the CFM ccm forwarding mode:
DGS-3700-12:5#config cfm ccm_fwd_mode hardware
Command: config cfm ccm_fwd_mode hardware
Success.
DGS-3700-12:5#
cfm loopback
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To configure CFM loop-back:
By default, the CCM message is handled and forwarded by software. The software
can handle the packet based on behaviour defined by the standard. Under a strict
environment, there may be substantial amount of CCM packets, and it will
consume substantial amount of CPU resource. To meet the performance
requirement, the handling of CCM can be changed to hardware mode. This
function is especially useful for domain's intermediate device since they only have
MIPS. Note that this command can only be used under assistance of technical
personnel.
software – Specifies to forward by software.
hardware – Specifies to forward by hardware.
Only Administrator and Operator-level users can issue this command.
Used to show MEPs and MIPs created on a port.
cfm loopback <macaddr> [mepname <string 32> | mepid <int 1-8191> md
<string 22> ma <string 22>] {num <int 1-65535> | [length <int 0-1500> |
pattern <string 1500>] | pdu_priority <int 0-7>}
The MAC address represents that the destination MEP or MIP which can be reached
by this MAC address. The MEP represents the source MEP to initiate the loop-back
message. You can press Ctrl+C to exit loop-back test.
<macaddr> –Specifies the destination MAC address.
mepname – Specifies the MEP name.
mepid – Specifies the MEP MEPID.
md – Specifies the maintenance domain name.
ma – Specifies the maintenance association name.
num – Specifies the number of LBMs to be sent. The default value is 4.
length – Specifies the payload length of LBM to be sent. The default is 0.
pattern – Specifies an arbitrary amount of data to be included in a Data TLV, along
with an indication of whether the Data TLV is to be included.
pdu_priority – The 802.1p priority to be set in the transmitted LBMs. If not specified,
it uses the same priority as CCMs and LTMs sent by the MA.
None.
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