Cisco CAR MIB - Overview
Cisco Weighted Rate-limit, known as Commited Access Rate (CAR), is a traffic control method which uses a set of rate limits to be applied to an interface for packet switching purpose. Each rate limit has a configurable action to be taken when a condition suffices.
This MIB incorporates objects from the Cisco Rate-limit line interfaces. Its purpose is to provide Weighted Rate-Limit packet filtering information.
A table of rate limit configuration entries. Rate Limit is a method of traffic control. It allows a set of rate limits to be configured and applied to packets flowing into/out of an interface to regulate network traffic.
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
ccarConfigDirection
1.3.6.1.4.1.9.9.113.1.1.1.1.1
PacketSource1 = input2 = outputThe source of the packet rate-limited for.
input statistics of the input packets. output statistics of the output packets. · Integer32
The data source for the Rate Limit object.
ccarConfigRowIndex
1.3.6.1.4.1.9.9.113.1.1.1.1.2
Integer32 (1..2147483647)
An arbitrary index for rate limit objects. It will increase as the list is traversed, but may skip.
ccarConfigType
1.3.6.1.4.1.9.9.113.1.1.1.1.3
RateLimitType1 = all2 = quickAcc3 = standardAccThe type of traffic rate-limited for.
all all traffic. quickAcc traffic matches rate-limit's access list. standardAcc traffic matches standard access list. · Integer32
The type of traffic rate-limited against.
ccarConfigAccIdx
1.3.6.1.4.1.9.9.113.1.1.1.1.4
Integer32
The index to the access list if RateLimitType is either quickAcc or standardAcc.
ccarConfigRate
1.3.6.1.4.1.9.9.113.1.1.1.1.5
Integer32 · bits/second
The comitted access rate. This is the sustained rate permitted by the rate limit.
ccarConfigLimit
1.3.6.1.4.1.9.9.113.1.1.1.1.6
Integer32 · bytes
The rate limit. The amout of traffic, in bytes, in excess of the committed access rate which will be instantaneously permitted by the rate limit.
ccarConfigExtLimit
1.3.6.1.4.1.9.9.113.1.1.1.1.7
Integer32 · bytes
The extended burst limit. The amount of traffic, in bytes, in excess of the burst limit which may be conditionnally permitted by the rate limit. The probability that the traffic is not permitted increases as the received burst increases.
P(not permitted) = (BurstRate - ConfLimit) / (ConfLimitExt - ConfLimit).
ccarConfigConformAction
1.3.6.1.4.1.9.9.113.1.1.1.1.8
RateLimitAction1 = drop2 = xmit3 = continue4 = precedXmit5 = precedContThe action taken after evaluating the rate limit.
drop drop the packet. xmit transmit the packet. continue continue to evaluate to the subsequent rate limits. precedXmit rewrite the IP precedence and transmit the packet. precedCont rewrite the IP precedence and allow it evaluated by subsequent rate limits. · Integer32
Action to be taken when the traffic is within the Rate Limit.
ccarConfigExceedAction
1.3.6.1.4.1.9.9.113.1.1.1.1.9
RateLimitAction1 = drop2 = xmit3 = continue4 = precedXmit5 = precedContThe action taken after evaluating the rate limit.
drop drop the packet. xmit transmit the packet. continue continue to evaluate to the subsequent rate limits. precedXmit rewrite the IP precedence and transmit the packet. precedCont rewrite the IP precedence and allow it evaluated by subsequent rate limits. · Integer32
Action to be taken when the traffic exceeds the Rate Limit.
InterfaceIndexA unique value, greater than zero, for each interface or interface sub-layer in the managed system. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re-initialization. (1..2147483647) · Integer32 · hint d
A unique value, greater than zero, for each interface. It is recommended that values are assigned contiguously starting from 1. The value for each interface sub-layer must remain constant at least from one re-initialization of the entity's network management system to the next re- initialization.
ccarStatSwitchedPkts
1.3.6.1.4.1.9.9.113.1.2.1.1.1
Counter32 · packets
The counter of packets permitted by this rate limit.
ccarStatSwitchedBytes
1.3.6.1.4.1.9.9.113.1.2.1.1.2
Counter32 · bytes
The counter of bytes permitted by this interface.
ccarStatFilteredPkts
1.3.6.1.4.1.9.9.113.1.2.1.1.3
Counter32 · packets
The counter of packets which exceeded this rate limit.
ccarStatFilteredBytes
1.3.6.1.4.1.9.9.113.1.2.1.1.4
Counter32 · bytes
The counter of bytes which exceeded this rate limit.
ccarStatCurBurst
1.3.6.1.4.1.9.9.113.1.2.1.1.5
Gauge32 · bytes
The current received burst size.
ccarStatSwitchedPktsOverflow
1.3.6.1.4.1.9.9.113.1.2.1.1.6
Counter32 · packets
The high-word of the counter of packets permitted by this rate limit.
NOTE: The object ccarStatSwitchedPkts contains the
lower 32 bits of the switched packet counts. If the number of switched packets is larger than what can be stored in a 32 bit value, then the high word value is stored in this object. As such SNMP Manager applications should combine this object along with the ccarStatSwitchedPkts object to come up with the 64-bit value.
SNMP v2c or v3 Manager can use the ccarStatHCSwitchedPkts object directly (which is a 64-bit object).
ccarStatSwitchedBytesOverflow
1.3.6.1.4.1.9.9.113.1.2.1.1.7
Counter32 · bytes
The high-word of the counter of bytes permitted by this interface.
NOTE: The object ccarStatSwitchedBytes contains the
lower 32 bits of the switched byte counts. If the number of switched bytes is larger than what can be stored in a 32 bit value, then the high word value is stored in this object. As such SNMP Manager applications should combine this object along with the ccarStatSwitchedBytes object to come up with the 64-bit value.
SNMP v2c or v3 Manager can use the ccarStatHCSwitchedBytes object directly (which is a 64-bit object).
ccarStatFilteredPktsOverflow
1.3.6.1.4.1.9.9.113.1.2.1.1.8
Counter32 · packets
The high-word of the counter of packets which exceeded this rate limit.
NOTE: The object ccarStatFilteredPkts contains the
lower 32 bits of the filtered packet counts. If the number of filtered packets is larger than what can be stored in a 32 bit value, then the high word value is stored in this object. As such SNMP Manager applications should combine this object along with the ccarStatFilteredPkts object to come up with the 64-bit value.
SNMP v2c or v3 Manager can use the ccarStatHCFilteredPkts object directly (which is a 64-bit object).
ccarStatFilteredBytesOverflow
1.3.6.1.4.1.9.9.113.1.2.1.1.9
Counter32 · bytes
The high-word of the counter of bytes which exceeded this rate limit.
NOTE: The object ccarStatFilteredBytes contains the
lower 32 bits of the filtered byte counts. If the number of filtered bytes is larger than what can be stored in a 32 bit value, then the high word value is stored in this object. As such SNMP Manager applications should combine this object along with the ccarStatFilteredBytes object to come up with the 64-bit value.
SNMP v2c or v3 Manager can use the ccarStatHCFilteredBytes object directly (which is a 64-bit object).
ccarStatHCSwitchedPkts
1.3.6.1.4.1.9.9.113.1.2.1.1.10
Counter64 (0..18446744073709551615) · packets
The counter of packets permitted by this rate limit.
NOTE: This is a 64 bit (High Capacity)
version of the ccarStatSwitchedPkts counter for use with SNMP v2c or v3 Managers
ccarStatHCSwitchedBytes
1.3.6.1.4.1.9.9.113.1.2.1.1.11
Counter64 (0..18446744073709551615) · bytes
The counter of bytes permitted by this interface.
NOTE: This is a 64 bit (High Capacity)
version of the ccarStatSwitchedBytes counter for use with SNMP v2c or v3 Managers
ccarStatHCFilteredPkts
1.3.6.1.4.1.9.9.113.1.2.1.1.12
Counter64 (0..18446744073709551615) · packets
The counter of packets which exceeded this rate limit.
NOTE: This is a 64 bit (High Capacity)
version of the ccarStatFilteredPkts counter for use with SNMP v2c or v3 Managers
ccarStatHCFilteredBytes
1.3.6.1.4.1.9.9.113.1.2.1.1.13
Counter64 (0..18446744073709551615) · bytes
The counter of bytes which exceeded this rate limit.
NOTE: This is a 64 bit (High Capacity)
version of the ccarStatFilteredBytes counter for use with SNMP v2c or v3 Managers