Switching

We have Cisco ISR 4331 Router and that  has an old firmware isr4300-universalk9.16.12.05.SPA.bin Firmware. we need to upgrade latest Firmware, Could you please suggest me which latest firmware is suitable for this router.

hi all,i have a cisco 3850 POE+ switch and both kettle leads are connected in to them and both PSU lights say connected and okon a port i plug in a voip phone and it powers it up no problembut as soon as i connect a door to the switch it doesnt power...

Hello Guys.I have a cisco Nexus 3048 Switch. after a sudden shut during a UPS power failure then the switch unable to start. and the FAN Status blinks a green LED. is there anyone who faces this error please, 

Dears,We are trying to establish a partnership with CISCO, but our registration process always fails. We need to know why is that happening and how can we fix it?P.S. When we tried to register our company as "Emdad Solutions for ICT Company", a dialo...

We have replaced couple of our 2960CPD-8PT-L with C1000-8FP-2G. On the interfaces that are configured as trunk, the "duplex" command isn't available. Can any C1000 user confirm that?  Thanks

Hello I am using Cisco NEXUS switches only for switching I have issues with   MPLS labeled traffic passing through NEXUS 93240 . Seems that the switch drop the labeled mulicast traffic .The vpls-xconnect between the PE routers is UP ,but no traffic p...

Hello, has anyone had this problem before?Sw cisco : IE5000 problem : Last reload reason: bus error at PC 0x7A40F84

Hello,Can you confirm that it is not possible to switch an X2-10G port to X2-1G (2 x 1Gb) on module 1 on an 4900M ?I have this error when inserting an CVR-X2-SFP V02 :%C4K_GLMMAN-3-X2PLUGGABLESEEPROMREADFAILED: Failed to read seeprom on port Te1/5. R...

Hello all! I am an apprentice in the networking industry who is struggling with a project i've been set.I have been tasked with implementing a network specification from my tutor in PacketTracer however when the IP phone attempts to obtain an IP via ...

Hello guys am kind of new to Meraki, I need the best and most efficient way to replace MS390 Meraki switches in production with MS250. 

Hello, I have a 9200L-24P-4X stand alone switch, I want to put a SFP ONT ( ONU ) module from my ISP, its a NOKIA/ALCATEL Branded, today its works in SFP-RJ45 Media converted, I wants to put it directly to Switch and put in in dedicated VLAN to Pfsens...

Hello Dears,is there any effect if i does not enable smart license on my Cisco 9500 switches ?Best Regards.

Can somebody tell me the difference in the following models:C1000-8T-2G-L vs. C1000-8T-2G-E-LWhat does the "E" indicate in the second model?