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Are you running CATOS or IOS?<br />
Which version?
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Are you running CATOS or IOS?
Which version?

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on the switch CAT OS version 6.3(5), on routing blade IOS version 12.0 
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on the switch CAT OS version 6.3(5), on routing blade IOS version 12.0

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Can you please give me the exact version of the routing blade?
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Can you please give me the exact version of the routing blade?

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roting blade WS-X4232-L3 Hw : 1.7 IOS (tm) L3 Switch/Router Software (CAT4232-IN-M), Version 12.0(10)W5(18f)
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roting blade WS-X4232-L3 Hw : 1.7 IOS (tm) L3 Switch/Router Software (CAT4232-IN-M), Version 12.0(10)W5(18f)

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After doing some looking around I notice that this switch is EOL. &nbsp;<br />
<br />
There are upgrades for the CATOS but you need to check your RMMON version as it needs to be 5.4(1) or later. &nbsp;Check on this and let me know.<br />
<br />
Also:<br />
<br />
When did this problem start?
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After doing some looking around I notice that this switch is EOL.  

There are upgrades for the CATOS but you need to check your RMMON version as it needs to be 5.4(1) or later.  Check on this and let me know.

Also:

When did this problem start?

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Thanks amadjesk<br />
<br />
I agree there is a new versions of the switch OS, but this is will not solve the hanging problem since it was working fine for &nbsp;6 years. this problem just start 1 week ago. before I never had any problem with it.
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Thanks amadjesk

I agree there is a new versions of the switch OS, but this is will not solve the hanging problem since it was working fine for  6 years. this problem just start 1 week ago. before I never had any problem with it.

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I have Cisco 4006 switch with routing blade. it start get hanging after some time (week, days)<br />
then after restart its working fine.. <br />
<br />
any idea how &nbsp;to trace and solve it
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I have Cisco 4006 switch with routing blade. it start get hanging after some time (week, days)
then after restart its working fine.. 

any idea how  to trace and solve it

CIsco CAT 4006 hanging

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.