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Troubleshooting
Unusual Network Activity
2400M/2424M/4000M/8000M Port To Join the Mesh . One of the Series
5300XL switches in the mesh domain has detected a duplicate MAC address
on multiple switches. For example:
Node “N”
5300-1
5300-2
4000M
V
L
A
N
1
V
L
A
N
2
Mesh Domain
Illegal Topology for
Heterogenous Mesh
To list the 802.1x port-access Event Log messages stored on the switch, use
show log 802.
Changing the topology can solve this problem. Also, the duplicate MAC
address must age out before the Switch 1600M/2400M/2424M/4000M/8000M
port can join the mesh. Refer to
“Using a Heterogeneous Switch Mesh” on page
14-7, and to the bulleted item “Compatibility with Older Switches” on page
14-25.
Duplicate MAC Addresses on Different Switches. In a switch mesh that
includes any 1600M/2400M/2424M/4000M/8000M switches, duplicate MAC
addresses on different switches are not allowed. (The 1600M/2400M/2424M/
4000M/8000M switches do not recognize multiple instances of a particular
MAC address on different VLANs.) Refer to
“The Switch Mesh Does Not Allow
An HP Procurve Switch 1600M/2400M/2424M/4000M/8000M Port To Join the
Mesh” on page C-9.
Port-Based Access Control (802.1x)-Related Problems
Note
See also “Radius-Related Problems” on page C-13.
The switch does not receive a response to RADIUS authentication
requests. In this case, the switch will attempt authentication using the
secondary method configured for the type of access you are using (console,
Telnet, or SSH).
There can be several reasons for not receiving a response to an authentication
request. Do the following:
C-10