Table 5: Cpu Protection And Squelching - Alcatel-Lucent 7450 System Management Manual

soon as this command is entered into the configuration. These MPs will not be able to receive
any ingress ETH-CFM frames because squelching is processed before ETH-CFM extraction.
CPU Protection Extensions for ETH-CFM are still required in the model above because the
Subscriber ME (6) and the Test ME (5) are entering the network across an untrusted
connection, the UNI. ETH-CFM squelching and CPU Protection for ETH-CFM can be
configured on the same SAP or binding. Squelching is first in the process order followed by
CPU Protection for ETH-CFM.
MPs configured to support primary VLAN are not subjected to the squelch function. Primary
VLAN based MPs, supported only on Ethernet SAPs, are extractions that take into
consideration an additional VLAN beyond the SAP configuration.
The difference in the two protection mechanisms is shown in the
used to control access to the CPU resources when processing is required. Squelching is
required when the operator is protecting the ETH-CFM architecture from external sources.

Table 5: CPU PRotection and Squelching

As well as including the squelching information under the show service service-id all, display
output the squelch-ingress-level key has been added to the sap-using and sdp-using show
commands.
show service sap-using squelch-ingress-levels
===============================================================================
ETH-CFM Squelching
===============================================================================
PortId
-------------------------------------------------------------------------------
6/1/1:100.*
7450 ESS System Mangement Guide
Description CPU Protection Extension for
Ingress Filtering
Egress Filtering
Granularity Specified Level AND OpCode
Rate Configurable Rate (includes
Primary VLAN Rate shared with SAP delineation
Support
Extraction Requires MEP or MIP to extract
SvcId
1
ETH-CFM
Yes
Yes
0=drop all)
Squelch Level
0 1 2 3 4 5 6 7
Security
Table 5. CPU Protection is
ETH-CFM Squelching
Yes
No
Level (At and below)
Silent Drop
Not exposed to squelch
No MEP or MIP required
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