Hi, is the 3750 used as a switch only? Is the client in the same vlan of dhcp server? Or, are the server and the clients in different vlans? is the 3750 used as a router between vlan? In this last case do you use "ip dhcp helper address" under interface vlan?
Dhcp requests are sent in broadcast. If you have vlans you need to use ip helped address.
Let us know your notes.
Regards.
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Sounds similar to another bug: Memory leak under cpp_cp_svr process CSCvf52877
https://community.cisco.com/t5/cisco-bug-discussions/cscvf52877-memory-leak-under-cpp-cp-svr-process/td-p/3324314
It has been fixed in more fresh release:
Known Fixed Releases: Everest-16.6.2 16.6.2 16.5.2 Everest-16.5.2 16.7(0.144) 16.5(1.134)
But you can ask to TAC to be sure.
Regards.
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Hi, check the logs in flash (show flash). If you have crash info files the switch reloaded due to a system crash.
In this case you can check cisco bug toolkit to find a releted bug or open a case to TAC.
If you want you can test one of the latest IOS 15.2.4, 15.2.5 or 15.2.6.
Regards.
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110 series switch have only the half of ports poe. If you need full ports poe you must switch to 250 series switch. In this case all ports are poe but you must check the power budget: "the switches support 802.3at PoE+, 802.3af, and Cisco prestandard (legacy) PoE. Maximum power of 30.0W to any 10/100 or Gigabit Ethernet port, until the PoE budget for the switch is reached." Check the link in the previous post to see datasheet. Otherwise you can use 2960 switch:
https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-2960-x-series-switches/datasheet_c78-728232.html
250 series switch and 2960 switch are managed but they work also without configuration in default mode.
Regards.
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Data Sheet are here:
https://www.cisco.com/c/en/us/products/collateral/switches/110-series-unmanaged-switches/datasheet-c78-734450.html
This is the table related to PoE ports:
Power over Ethernet (PoE)
Model Name
SF110D-08HP
SF110D-16HP
SG110D-08HP
SG110-16HP
SG110-24HP
Power Dedicated to PoE
32 watts
64 watts
32 watts
64 watts
100 watts
Number of PoE Ports
4
8
4
8
12
If you need more PoE ports you can check for 250 Series Switches but they are managed.
Data sheet is here: https://www.cisco.com/c/en/us/products/collateral/switches/250-series-smart-switches/datasheet-c78-737061.html
Or 2960 switch:
https://www.cisco.com/c/en/us/products/switches/catalyst-2960-x-series-switches/models-comparison.html
Otherwise you can check for Linksys switch:
https://www.linksys.com/gb/c/business-network-switches/
Regards.
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Hi, you can find the password recovery procedure at this link:
https://www.cisco.com/c/en/us/support/docs/routers/2800-series-integrated-services-routers/112033-c2900-password-recovery-00.html
Regards.
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Hi, check the link below:
https://www.cisco.com/c/en/us/products/switches/110-series-unmanaged-switches/models-comparison.html
You can find a list of unmanged switch.
Regards.
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As you can see from the test the PoE for the first 4 ports have some problems:
POST: Inline Power Controller Tests : Begin POST: inline power post failed for port 0 POST: inline power post failed for port 1 POST: inline power post failed for port 2 POST: inline power post failed for port 3 POST: Inline Power Controller Tests : End, Status Failed
As suggested from Mr. Leo Laohoo you can ask for an RMA.
Regards.
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Hi, do you have errors in the boot logs?
Can you execute a diagnostic test to check the ports status?
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_53_se/configuration/guide/2960scg/swgold.html
Regards.
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Hi, you can find some informations here:
http://www.learncertification.com/study-material/process-switching-fast-switching-cef
https://learningnetwork.cisco.com/thread/12668
http://www.ciscopress.com/articles/article.asp?p=2359569
Regards.
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Yes, CatOS is in end of life:
https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/prod_end-of-life_notice0900aecd80699e1a.html
2008 was the last year of selling for CatOS.
Probably you can find some old CatOS device on the market of used/refurbished devices.
Regards.
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Hi, CatOS is an old eol layer 2 operating system used befor IOS.
In my opinion there is no reason to use catos today. It's not suppored from a lot of devices.
If you are courious you can get some informations on this external post:
https://www.fryguy.net/2011/08/15/catos-and-ios/
Regards.
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