Cisco 7604 User Manual

51-5
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 51 Configuring NDE
Understanding NDE
Table 51-3 NDE Version 5 Flow Record Format
Bytes Content Description
Flow masks:
• X=Populated
• A=Additional field (see the “Populating Additional
NDE Fields” section on page 51-12)
Source Destination Destination Source Destination Source Interface Full Full Interface
0–3 srcaddr Source IP address
X0 XXXX
4–7 dstaddr Destination IP address
0XXXXX
8–11 nexthop Next hop router’s IP address
1
1. Always zero when PBR, WCCP, or SLB is configured.
0A
2
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.
AAAA
12–13 input Ingress interface SNMP ifIndex
000X0X
14–15 output Egress interface SNMP ifIndex
3
3. Always zero when policy-based routing is configured.
0A
2
AAAA
16–19 dPkts Packets in the flow
XXXXXX
20–23 dOctets Octets (bytes) in the flow
XXXXXX
24–27 first SysUptime at start of the flow (milliseconds)
XXXXXX
28–31 last SysUptime at the time the last packet
of the flow was received (milliseconds)
XXXXXX
32–33 srcport Layer 4 source port number or equivalent
0000X
4
4. In PFC3BXL or PFC3B mode, for ICMP traffic, contains the ICMP code and type values.
X
4
34–35 dstport Layer 4 destination port number or equivalent
0000XX
36 pad1 Unused (zero) byte
000000
37 tcp_flags Cumulative OR of TCP flags
5
5. Always zero for hardware-switched flows.
000000
38 prot Layer 4 protocol
(for example, 6=TCP, 17=UDP)
0000XX
39 tos IP type-of-service byte
X
6
6. Populated in PFC3BXL or PFC3B mode.
X
6
X
6
X
6
X
6
X
6
40–41 src_as Autonomous system number of the source,
either origin or peer
X0 XXXX
42–43 dst_as Autonomous system number of the
destination, either origin or peer
0XXXXX
44–45 src_mask Source address prefix mask bits
X0 XXXX
46–47 dst_mask Destination address prefix mask bits
0XXXXX
48 pad2 Pad 2
000000

Cisco 7604 Specifications

General

Brand	Cisco
Model	7604
Category	Network Router
Language	English