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There were uplinks to 2 switches and a firewall. they had me run this on those 3 ports<br />
config t<br />
interface GigabitEthernet0/##<br />
no spanning-tree portfast<br />
exit<br />
wr mem<br />

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There were uplinks to 2 switches and a firewall. they had me run this on those 3 ports
config t
interface GigabitEthernet0/##
no spanning-tree portfast
exit
wr mem


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Since then I haven't had an incident so I'm thinking that the issue may be resolved... I want to wait a while longer to see if it happens again.
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Since then I haven't had an incident so I'm thinking that the issue may be resolved... I want to wait a while longer to see if it happens again.

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<div class="content wysiwyg-content">
I just installed a new Cisco 3560 Gigabit 48 port switch. Since it has been installed, at least once per day the LAN seems to lose connection for a split second (or long enough for our accounting system to lose connection to the database.) which requires a restart to re-gain connection. I have started a TAC case with Cisco but for the first time I am not getting very good service from them. Are there any ideas on what I can do to determine where the problem is. I have enabled syslogging and since then I haven't experienced the problem, I estimate it will happen sometime today and when it does I want to make sure the logging is configured correctly and it will capture the needed info.
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I just installed a new Cisco 3560 Gigabit 48 port switch. Since it has been installed, at least once per day the LAN seems to lose connection for a split second (or long enough for our accounting system to lose connection to the database.) which requires a restart to re-gain connection. I have started a TAC case with Cisco but for the first time I am not getting very good service from them. Are there any ideas on what I can do to determine where the problem is. I have enabled syslogging and since then I haven't experienced the problem, I estimate it will happen sometime today and when it does I want to make sure the logging is configured correctly and it will capture the needed info.

Cisco 3560 dropout

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.