Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 17

Chapter 1 Troubleshooting Overview
S e n d d o c u m e n t c o m m e n t s t o n e x u s 5 k - d o c f e e d b a c k @ c i s c o . c o m .
2008-08-13 01:37:23.220253 00:0d:ec:6b:cd:40 -> fc:fc:fc:ff:ff:fd 4 0
ff.ff.fd
2008-08-13 01:37:23.220615 00:0d:ec:6b:cd:40 -> aa:bb:cc:dd:01:04 4 0
ff.ff.fd
2008-08-13 01:37:23.227202 00:0d:ec:6b:cd:40 -> aa:bb:cc:dd:01:04 4 0
ff.ff.fd
2008-08-13 01:37:23.229927 00:0d:ec:6b:cd:40 -> fc:fc:fc:ff:ff:fd 4 0
ff.ff.fd
Detailed BPDU
switch# ethanalyzer local sniff-interface inbound-hi limit-captured-frames 0
Capturing on eth4
Frame 1 (57 bytes on wire, 57 bytes captured)
[snip]
[snip]
SPAN
The Switched Port Analyzer (SPAN) feature—sometimes called port mirroring or port
monitoring—selects network traffic for analysis by a network analyzer. The network analyzer can be a
Cisco SwitchProbe, a Fibre Channel Analyzer, or other Remote Monitoring (RMON) probes.
SPAN sources refer to the interfaces from which traffic can be monitored. The Cisco Nexus 5000 Series
switch supports Ethernet, virtual Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN
port channels, VLANs, and VSANs as SPAN sources. With VLANs or VSANs, all supported interfaces
in the specified VLAN or VSAN are included as SPAN sources. You can choose the SPAN traffic in the
ingress direction, the egress direction, or both directions for Ethernet, virtual Ethernet, Fibre Channel,
and virtual Fibre Channel source interfaces:
•
•
For the Cisco Nexus 5548 Switch, Fibre Channel ports cannot be configured as ingress source ports in
Note
a SPAN session.
OL-25300-01
0x5384 0xffff SW_ILS ELP
0x5384 0x2b3f FC Link Ctl, ACK1
0x5384 0x2b3f SW_ILS SW_ACC (ELP)
0x5384 0x2b3f FC Link Ctl, ACK1
Arrival Time: Aug 13, 2008 01:41:32.631969000
[Time delta from previous captured frame: 1218591692.631969000 seconds]
[Time delta from previous displayed frame: 1218591692.631969000 seconds]
[Time since reference or first frame: 1218591692.631969000 seconds]
Frame Number: 1
Frame Length: 57 bytes
Capture Length: 57 bytes
[Frame is marked: False]
[Protocols in frame: eth:vlan:llc:stp]
DSAP: Spanning Tree BPDU (0x42)
IG Bit: Individual
SSAP: Spanning Tree BPDU (0x42)
CR Bit: Command
Control field: U, func=UI (0x03)
000. 00.. = Command: Unnumbered Information (0x00)
.... ..11 = Frame type: Unnumbered frame (0x03)
Ingress source (Rx)—Traffic entering the switch through this source port is copied to the SPAN
destination port.
Egress source (Tx)—Traffic exiting the switch through this source port is copied to the SPAN
destination port.
Fabric Manager Tools and CLI Commands
Cisco Nexus 5000 Series Troubleshooting Guide
ff.ff.fd ->
ff.ff.fd ->
ff.ff.fd ->
ff.ff.fd ->
1-9