Setting up sampled Netflow on the Nexus 6000 series software version 6.x.
User would like to know if there a document which shows how to set up sampled Netflow, 'feature netflow', unable to locate it on the Nexus 6001 software 6.x.
Only 7.x support sampled netflow and not version 6.x. The Sampled NetFlow feature samples incoming packets on an interface. The packets sampled then qualify to create flows. Sampled NetFlow reduces the amount of export data sent to the collector by limiting the number of packets that create flows and the number of flows. It is essential when flows are created on a line card or external device, instead of on the forwarding engine.
New Software Features in Cisco NX-OS Release 7.0(0)N1(1) Cisco NX-OS Release 7.0(0)N1(1) is a major release that includes bug fixes and the following software features and enhancements:
Dynamic Fabric Automation
Early Warning for FIB Exhaustion
ECN with WRED
ERSPAN with ACL Filtering
FabricPath Operations, Administration, and Management
Intermediate System to Intermediate System Protocol
Cisco NX-OS supports sampled NetFlow. This feature samples incoming packets on an interface. The packets sampled then qualify to create flows. Sampled NetFlow reduces the amount of export data sent to the collector by limiting the number of packets that create flows and the number of flows. It is essential when flows are created on a line card or external device, instead of on the forwarding engine.
The sampling mode supported is M out of N (M:N), where M packets are selected randomly out of every N packets for sampling, and only those packets can create flows. The lowest possible sampling rate on the Cisco Nexus 6000 series is 1:64K packets. The following table shows the different packet rates for different port types when the sampling rate is set to 1:64K packets:
Port SpeedNumber of packets using a 1:64K sampled packet rate
The values in the above table apply to 64 Byte sized packets. The values are different for different size of packets.
Nexus 6000 provides Smart Buffering such as shared buffering for making efficient usage of the buffer for burst absorption. Nexus 6000 also provides Intelligent Flow Management such as Sampled Netflow for traffic engineering, capacity planning or Priority Flow Control for point-to-point flow control of Ethernet traffic based on IEEE 802.1p CoS. With a flow-control mechanism in place, congestion does not result in drops, transforming Ethernet into a reliable medium. Explicit congestion notification also allows an end-to-end notification of network congestion without dropping packets.
Hello, Can someone give me simple and clearcut explanation pdf to understand multi-pod and multi-site features? differences between multi-pod and multi-site?how they work?how to configure them ? thank you very much
Hello,we have two pairs of Nexus 5672UP (one pair/site). They are running 7.3(3)N1(1) with LAN base license LAN_BASE_SERVICES_PKG. We want to configure Switch-to-Switch encryption between the two sites, by using TrustSec MacSec (Switch-to-Switch link secu...
Hi, I'm trying to understand under which scenarios it is recommended to enable GARP (and hence, ARP Floding). According to the ACI Fabric Endpoint Learning White Paper: Cisco ACI can detect MAC and IP address movement between leaf switch po...
HiI have a Problem in symmetric hashing on port channel in nexus 3172PQ.In my design i want to use two Nexus 3172PQ that ether channel together. between these switches, there is a layer 2 devices that capture traffic flow. But when enable port channel on ...