Cisco Systems 3750E manual Using the crashinfo Files, Basic crashinfo Files, 45-25

Chapter 45 Troubleshooting

Using the crashinfo Files

This is an example of the output when the packet coming in on port 1 in VLAN 5 has a destination MAC address set to the router MAC address in VLAN 5 and the destination IP address set to an IP address that is in the IP routing table. It should be forwarded as specified in the routing table.

Switch# show platform forward gigabitethernet1/0/1 vlan 5 1.1.1 03.e319.ee44 ip 110.1.5.5

16.1.10.5

Global Port Number:24, Asic Number:5

Src Real Vlan Id:5, Mapped Vlan Id:5

Ingress:
Lookup		Key-Used			Index-Hit A-Data
InptACL 40_10010A05_0A010505-00_41000014_000A0000					01FFA	03000000
L3Local 00_00000000_00000000-90_00001400_10010A05					010F0	01880290
L3Scndr 12_10010A05_0A010505-00_40000014_000A0000					01D28	30090001_00000000
Lookup Used:Secondary
Station Descriptor:F0070007, DestIndex:F007, RewriteIndex:0007
==========================================
Egress:Asic 3, switch 1
Output Packets:
------------------------------------------
Packet 1
Lookup		Key-Used			Index-Hit A-Data
OutptACL 50_10010A05_0A010505-00_40000014_000A0000					01FFE	03000000
Port	Vlan	SrcMac	DstMac	Cos	Dscpv
Gi1/0/2	0007 XXXX.XXXX.0246		0009.43A8.0147

Using the crashinfo Files

The crashinfo files save information that helps Cisco technical support representatives to debug problems that caused the Cisco IOS image to fail (crash). The switch writes the crash information to the console at the time of the failure. The switch creates two types of crashinfo files:

•Basic crashinfo file—The switch automatically creates this file the next time you boot up the Cisco IOS image after the failure.

•Extended crashinfo file—The switch automatically creates this file when the system is failing.

Basic crashinfo Files

The information in the basic file includes the Cisco IOS image name and version that failed, a list of the processor registers, and a stack trace. You can provide this information to the Cisco technical support representative by using the show tech-supportprivileged EXEC command.

Basic crashinfo files are kept in this directory on the flash file system:

flash:/crashinfo/.

The filenames are crashinfo_n where n is a sequence number.

Each new crashinfo file that is created uses a sequence number that is larger than any previously existing sequence number, so the file with the largest sequence number describes the most recent failure. Version numbers are used instead of a timestamp because the switches do not include a real-time clock. You cannot change the name of the file that the system will use when it creates the file. However, after the

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02		45-25