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HP ProCurve 2650 User Manual

HP ProCurve 2650
524 pages
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xiii
C Troubleshooting
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Troubleshooting Approaches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Browser or Telnet Access Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Unusual Network Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
General Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
802.1q Prioritization Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
CDP Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
IGMP-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
LACP-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Port-Based Access Control (802.1x)-Related Problems . . . . . . . . . . . C-9
Radius-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-12
Spanning-Tree Protocol (STP) and Fast-Uplink Problems . . . . . . . C-14
SSH-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-15
Stacking-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-16
TACACS-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-16
TimeP, SNTP, or Gateway Problems . . . . . . . . . . . . . . . . . . . . . . . . . C-18
VLAN-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-18
Using the Event Log To Identify Problem Sources . . . . . . . . . . . . . C-21
Structure of the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-21
Menu: Entering and Navigating in the Event Log . . . . . . . . . . . . . . . C-23
CLI: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-24
Diagnostic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-25
Port Auto-Negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-26
Ping and Link Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-26
Displaying the Configuration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-30
CLI Administrative and Troubleshooting Commands . . . . . . . . . . . C-32
Restoring the Factory-Default Configuration . . . . . . . . . . . . . . . . . C-33
Restoring a Flash Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-34
!Software.book Page xiii Thursday, October 10, 2002 6:10 PM

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HP ProCurve 2650 Specifications

General IconGeneral
Switching Capacity13.6 Gbps
Forwarding Rate10.1 Mpps
Layer2
Jumbo Frame SupportYes
Form FactorRack-mountable
VLAN SupportYes
Layer 3 RoutingNo
PoE SupportNo
FanlessNo
AltitudeUp to 3, 000 meters
ManagementCLI, SNMP
Operating Temperature0°C to 50°C
Storage Temperature-40°C to 70°C
Humidity15% to 95% non-condensing

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