Switching

Hello,I have several 3560X series switches all running on 15.0(2)SE2, but there is one switch in particular that crashes every 5 weeks (almost to the hour). I have attached a crash file that I cannot decode. Can anyone tell me how to figure out what ...

Hi guys,recently we replaced our cat3750 boxes with WS-C4948-10GE. Everything works great, but we are distracted by log entries like this:000510: Aug 16 07:07:17.985 UTC: %SFF8472-5-THRESHOLD_VIOLATION: Te1/50: Rx power low alarm; Operating value: -4...

Hi all,often i get mac address flap error in switches, but unable to identify the cause for some cases.AS1---DS---AS2. Two switches AS1 and AS2 are connected to DS and i am seeing host mac address connected to AS1 being learnt from AS2 connected port...

I'm having trouble getting these 2 switchs to stack  - is it a ios issue or a version ?The first 3750,   is a WS-C3750-24PS-S hardware model, and is running “c3750-ipbasek9-mz.122-55.SE1.bin” software.The second 3750, WS-C3750X-24P-L hardware model,...

Hi all,I am relatively new to Cisco and to give you an idea of where I am technically, i got my ICND1 earlier this year and just started ICND2.I have an 887 (887VA-K9 v02 to be exact) and what I'm trying to achieve, although seems very simple is not ...

I want to make only local hosts to see my snmp trapthe problem right now it can be seen from wan any help snmp-server community public ROsnmp-server community private RWsnmp-server source-interface informs Vlan1snmp-server enable traps syslogsnmp-ser...

Hi all,I am working on a design in which I plan to deploy the Cisco 4500-X in my aggregation/distribution layer of a new network design. I've been reviewing the licensing options and have a query. If I purchase the WS-C4500X-40X-ES do I also need to ...

Hi all,we are trying to troubleshoot something very strange, we have 2 DC connected with L2 link at 500 Mbps, icmp is ok on each side but TCP applications are very slow, file transfer for example, it takes half an hour to transfer 52MB, slowness is i...

                  Hi,We are getting following error messages on one of our core swtiches55248: Aug 24 02:09:41.226 UTC: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 6873 times)Packet received with invalid source MAC address (00:00:00:00:00:00...

Hi,please  help  me if  possible  to  implement  the  Multiple  Trunk.My  Distribution  Switch is  3560 G and  access switch  2960. Need  two trunks carry   vlan1-10  and  if  one  fails  the other one will work as redundant.Please advice.Thanks,Saro...

The DTI 1936 is an ATCA switch blade in an Emerson chassis.  See the link below for more information...The 1936 and S4810 are operating solely as L2 devices, with the 1936 connecting to the 4810 on a 10G port.  The attached configs have at least the ...

So basically, I'm doing a case study and I just want to know your thoughts/insights about the switches that I have chosen for a specific layer. If it needs improvements, kindly tell me what to change. Basically, what's required is a small campus netw...