Troubleshooting
Unusual Network Activity
None of the devices assigned to one or more VLANs on an 802.1Q
compliant switch are being recognized.
If multiple VLANs are being used
on ports connecting 802.1Q-compliant devices, inconsistent VLAN IDs may
have been assigned to one or more VLANs. For a given VLAN, the same VLAN
ID must be used on all connected 802.1Q-compliant devices.
Link Configured for Multiple VLANs Does Not Support Traffic for One
or More VLANs.
One or more VLANs may not be properly configured as
“Tagged” or “Untagged”. A VLAN assigned to a port connecting two 802.1Q
compliant devices must be configured the same on both ports. For example,
VLAN_1 and VLAN_2 use the same link between switch “X” and switch “Y”.
Switch “Y”
Switch “X”
Link supporting VLAN_1
and VLAN_2
Port X-3
Port Y- 7
VLAN Port Assignment
VLAN Port Assignment
Port VLAN_1
VLAN_2
Port VLAN_1
VLAN_2
X-3 Untagged Tagged
Y-7 Untagged Tagged
Figure C-4. Example of Correct VLAN Port Assignments on a Link
1. If VLAN_1 (VID=1) is configured as “Untagged” on port 3 on switch “X”,
then it must also be configured as “Untagged” on port 7 on switch “Y”.
Make sure that the VLAN ID (VID) is the same on both switches.
2. Similarly, if VLAN_2 (VID=2) is configured as “Tagged on the link port on
switch “A”, then it must also be configured as “Tagged” on the link port
on switch “B”. Make sure that the VLAN ID (VID) is the same on both
switches.
Duplicate MAC Addresses Across VLANs.
The switch operates with mul
tiple forwarding databases. Thus, duplicate MAC addresses occurring on
different VLANs can appear where a device having one MAC address is a
member of more than one 802.1Q VLAN, and the switch port to which the
device is linked is using VLANs (instead of STP or trunking) to establish
redundant links to another switch. If the other device sends traffic over
multiple VLANs, its MAC address will consistently appear in multiple VLANs
on the switch port to which it is linked.
C-19
Summary of Contents for ProCurve 2610-24
Page 1: ...Management and Configuration Guide 2610 2610 PWR ProCurve Switches R 11 XX www procurve com ...
Page 2: ......
Page 18: ...xvi ...
Page 24: ...Product Documentation xxii ...
Page 54: ...Using the Menu Interface Where To Go From Here 3 16 ...
Page 94: ...Using the Web Browser Interface Status Reporting Features 5 24 ...
Page 132: ...Switch Memory and Configuration Multiple Configuration Files 6 38 ...
Page 148: ...Interface Access and System Information System Information 7 16 ...
Page 192: ...Time Protocols SNTP Messages in the Event Log 9 24 ...
Page 256: ...Power Over Ethernet PoE Operation PoE Event Log Messages 11 18 ...
Page 280: ...Port Trunking Port Status and Configuration 12 24 ...
Page 362: ...File Transfers Copying Diagnostic Data to a Remote Host PC or Unix Workstation A 24 ...
Page 438: ...Troubleshooting Restoring a Flash Image C 48 ...
Page 446: ...MAC Address Management Viewing the MAC Addresses of Connected Devices D 8 ...
Page 450: ...Daylight Savings Time on ProCurve Switches Configuring Daylight Savings Time E 4 ...
Page 462: ...12 Index ...
Page 463: ......