Cisco 7604 Configuration Manual page 866

Understanding NDE
Table 51-4 NDE Version 7 Flow Record Format
Bytes Content Description
0–3 srcaddr Source IP address
4–7 dstaddr Destination IP address
8–11 nexthop Next hop router's IP address
12–13 input Ingress interface SNMP ifIndex
14–15 output Egress interface SNMP ifIndex
16–19 dPkts Packets in the flow
20–23 dOctets Octets (bytes) in the flow
24–27 First SysUptime at start of the flow (milliseconds)
28–31 Last SysUptime at the time the last packet
of the flow was received (milliseconds)
32–33 srcport Layer 4 source port number or equivalent
34–35 dstport Layer 4 destination port number or equivalent
36 flags Flow mask in use
37 tcp_flags Cumulative OR of TCP flags
38 prot Layer 4 protocol
(for example, 6=TCP, 17=UDP)
39 tos IP type-of-service byte
40–41 src_as Autonomous system number of the source,
either origin or peer
42–43 dst_as Autonomous system number of the
destination, either origin or peer
44 src_mask Source address prefix mask bits
45 dst_mask Destination address prefix mask bits
46–47 pad2 Pad 2
48–51 MLS RP IP address of MLS router
1. Always zero when PBR, WCCP, or SLB is configured.
2. With the destination flow mask, the "Next hop router's IP address" field and the "Output interface's SNMP ifIndex" field might not contain information
that is accurate for all flows.
3. Always zero when policy-based routing is configured.
4. In PFC3BXL or PFC3B mode, for ICMP traffic, contains the ICMP code and type values.
5. Always zero for hardware-switched flows.
6. Populated with Release 12.2(17b)SXA and later releases in PFC3BXL or PFC3B mode.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
51-6
Flow masks:
• X=Populated
• A=Additional field (see the
NDE Fields" section on page
X
0
1
0
0
3
0
X
X
X
X
0
0
X
5
0
0
6
X
X
0
X
0
0
0
Chapter 51
"Populating Additional
51-12)
0 X X
X X X
2
A A A
0 0 X
2
A A A
X X X
X X X
X X X
X X X
0 0 0
0 0 0
X X X
0 0 0
0 0 0
6 6 6
X X X
0 X X
X X X
0 X X
X X X
0 0 0
X X X
Configuring NDE
X X
X X
A A
0 X
A A
X X
X X
X X
X X
4 4
X X
X X
X X
0 0
X X
6 6
X X
X X
X X
X X
X X
0 0
X X
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