sFlow |
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sFlow
Overview
sFlow commands are supported on these platforms:
c e s
.
FTOS sFlow monitoring system includes an sFlow Agent and an sFlow Collector. The sFlow Agent
combines the flow samples and interface counters into sFlow datagrams and forwards them to the
sFlow Collector. The sFlow Collector analyses the sFlow Datagrams received from the different
devices and produces a network-wide view of traffic flows.
Important Points to Remember
•
Dell Force10 recommends that the sFlow Collector be connected to the Dell Force10 chassis
through a line card port rather than the RPM Management Ethernet port.
•
FTOS exports all sFlow packets to the sFlow Collector. A small sampling rate can equate to a
large number of exported packets. A backoff mechanism will automatically be applied to reduce
this amount. Some sampled packets may be dropped when the exported packet rate is high and the
backoff mechanism is about to or is starting to take effect. The dropEvent counter, in the sFlow
packet, will always be zero.
•
sFlow sampling is done on a per-port basis.
•
Community list and local preference fields are not filled up in the extended gateway element in the
sFlow datagram.
•
The 802.1P source priority field is not filled up in the extended switch element in the sFlow
datagram.
•
Only Destination and Destination Peer AS numbers are packed in the dst-as-path field in the
extended gateway element.
•
If the packet being sampled is redirected using PBR (Policy-Based Routing), the sFlow datagram
may contain incorrect extended gateway/router information.
•
sFlow does not support packing extended information for IPv6 packets. Only the first 128 bytes of
the IPv6 packet is shipped in the datagram.
•
The source VLAN field in the extended switch element will not be packed in case of a routed
packet.
•
The destination VLAN field in the extended switch element will not be packed in case of a
multicast packet.
•
The maximum number of packets that can be sampled and processed per second is:
— 7500 packets when no extended information packing is enabled
— 7500 packets when only extended-switch information packing is enabled
— 1600 packets when extended-router and/or extended-gateway information
Summary of Contents for Force10 TeraScale C Series
Page 1: ...FTOS Command Line Reference Guide FTOS 8 4 2 7 E Series TeraScale C Series S Series S50 S25 ...
Page 164: ...164 Control and Monitoring w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 176: ...176 802 1ag w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 188: ...188 802 3ah w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 204: ...204 802 1X w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 294: ...294 Access Control Lists ACL w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 428: ...428 Border Gateway Protocol IPv4 BGPv4 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 456: ...456 Configuration Rollback w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 472: ...472 Dynamic Host Configuration Protocol DHCP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 484: ...484 Far End Failure Detection FEFD w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 682: ...682 IPv4 Routing w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 732: ...732 IPv6 Basics w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 896: ...896 Layer 2 w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 914: ...914 Link Layer Detection Protocol LLDP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 926: ...926 Multicast Listener Discovery MLD w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 952: ...952 Multiple Spanning Tree Protocol MSTP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 976: ...976 Multicast w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 984: ...984 Neighbor Discovery Protocol NDP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1094: ...1094 Policy based Routing PBR w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1130: ...1130 PIM Sparse Mode PIM SM w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1164: ...1164 Private VLAN PVLAN w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1276: ...1276 Rapid Spanning Tree Protocol RSTP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1342: ...1342 Service Provider Bridging w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1354: ...1354 sFlow w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1428: ...1428 Spanning Tree Protocol STP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1444: ...1444 Time and Network Time Protocol NTP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1464: ...1464 VLAN Stacking w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1494: ...1494 Virtual Router Redundancy Protocol VRRP w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1534: ...1534 C Series Diagnostics and Debugging w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1574: ...1574 E Series Debugging and Diagnostics w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1592: ...1592 S Series Debugging and Diagnostics w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1622: ...1622 Index w w w d e l l c o m s u p p o r t d e l l c o m ...
Page 1640: ...1640 Command Index w w w d e l l c o m s u p p o r t d e l l c o m ...