Cisco WS-C6506 User Manual

16-4
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 16 Configuring NDE
Understanding How NDE Works
• Supervisor Engine 32 and PFC3B/PFC3BXL—NDE versions 5 and 7 (Supervisor Engine 32 was
initially supported in software release 8.4[1]).
Depending on the current flow mask, some fields in the flow records might not have values. When the
PFC exports the cached entries, the unsupported fields are filled with a zero (0).
The following tables list the supported NDE fields:
• Table 16-1—Version 5 header format
• Table 16-2—Version 5 flow record format
• Table 16-3—Version 7 header format
• Table 16-4—Version 7 flow record format
Table 16-1 NDE Version 5 Header Format
Bytes Content Description
0–1 version NetFlow export format version number
2–3 count Number of flows exported in this packet (1–30)
4–7 SysUptime Current time in milliseconds since router booted
8–11 unix_secs Current seconds since 0000 UTC 1970
12–15 unix_nsecs Residual nanoseconds since 0000 UTC 1970
16–19 flow_sequence Sequence counter of total flows seen
20–21 engine_type Type of flow switching engine
(VS_ENGINE_TYPE_CATALYST_SWITCH)
21–23 engine_id 0
Table 16-2 NDE Version 5 Flow Record Format
Bytes Content Description
Flow masks: X=Populated
Destination
Destination
Source Full Full VLAN
1
0–3 srcaddr Source IP address
0X XX
4–7 dstaddr Destination IP address
XX XX
8–11 nexthop Next-hop router’s IP address
XX XX
12–13 input Ingress interface SNMP ifIndex
2
0X XX
14–15 output Egress interface SNMP ifIndex
XX XX
16–19 dPkts Packets in the flow
XX XX
20–23 dOctets Octets (bytes) in the flow
XX XX
24–27 first SysUptime at start of the flow
(milliseconds)
XX XX
28–31 last SysUptime at the time the
last packet of the flow was received
(milliseconds)
XX XX
32–33 srcport Layer 4 source port number or equivalent
00 XX

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English