sapCpmProtEthCfmMonitorFlags 1.3.6.1.4.1.6527.3.1.2.4.3.2.1.54

The value of sapCpmProtEthCfmMonitorFlags specifies whether or not to apply rate limiting (using the tmnxCpmProtEthCfmPolTable configuration) to Ethernet Connectivity Fault Management (Eth-CFM) packets served by the SAP. Two associated options are also specified. Five combinations of flag values are supported, as shown in the following table. Flag Value (0=Disabled, 1=Enabled) ------------------------------------- ----------------------------- 'ethCfmMonitor(0)' 0 0 0 0 1 1 1 1 'ethCfmMonitorAggregate(1)' 0 0 1 1 0 0 1 1 'ethCfmMonitorCommittedAccessRate(2)' 0 1 0 1 0 1 0 1 ------------------------------------- ----------------------------- Supported Combination? Y N N N Y Y Y Y If 'ethCfmMonitor(0)' is disabled, Eth-CFM rate limiting is disabled on this SAP. If 'ethCfmMonitor(0)' is enabled, Eth-CFM rate limiting is enabled on this SAP. Excess packets are discarded. The configured information used to perform the Eth-CFM rate limiting (e.g. the rate limit(s)) resides in the tmnxCpmProtEthCfmPolTable row(s) indexed by the SAP's sapCpmProtPolicyId. At most one of the following options can be enabled on this SAP: 1. sapCpmProtMonitorMac, 2. The sapCpmProtEthCfmMonitorFlags option 'ethCfmMonitor(0)', 3. sapCpmProtMonitorIP. The flags 'ethCfmMonitorAggregate(1)' and 'ethCfmMonitorCommittedAccessRate(2)' adjust the behavior of Eth-CFM rate limiting. Therefore, they are only significant if Eth-CFM rate limiting is enabled (i.e. when 'ethCfmMonitor(0)' is enabled). The remainder of this DESCRIPTION assumes 'ethCfmMonitor(0)' is enabled. If 'ethCfmMonitorAggregate(1)' is disabled, the applicable Eth-CFM packet rate limit (tmnxCpmProtEthCfmPolRateLimit) applies per peer (i.e. on a source MAC address basis). For example, if the SAP's rate limit for all Eth-CFM packets is 100 packets/sec, and two peers are served by the SAP, then 100 Eth-CFM packets/sec from each peer is within the limit. If 'ethCfmMonitorAggregate(1)' is enabled, the applicable Eth-CFM packet rate limit (tmnxCpmProtEthCfmPolRateLimit) applies to the aggregated traffic flow. For example, if the SAP's rate limit for all Eth-CFM packets is 100 packets/sec, and two peers are served by this SAP, then the combined rate of the two peers cannot exceed 100 packets/sec. 'ethCfmMonitorCommittedAccessRate(2)' controls the interaction between two features: Eth-CFM rate limiting, and overall rate limiting (as configured using tmnxCpmProtPolOverallRateLimit). If 'ethCfmMonitorCommittedAccessRate(2)' is disabled, an Eth-CFM packet is subjected to two rate limits, in the following order. a) The applicable tmnxCpmProtEthCfmPolRateLimit is applied, as described above. If the packet exceeds the limit, it is discarded. Otherwise... b) The SAP's tmnxCpmProtPolOverallRateLimit (which is applied to Eth-CFM packets, and the other rate limited packet types) is applied. If 'ethCfmMonitorCommittedAccessRate(2)' is enabled, an Eth-CFM packet is subjected to one rate limit: the applicable tmnxCpmProtEthCfmPolRateLimit, as described above. Eth-CFM packets are neither counted nor discarded when performing the tmnxCpmProtPolOverallRateLimit rate limiting.