Switching

my switch cisco 2960 WS-C2960X-24TS-L 15.2(7)E4 C2960X-UNIVERSALK9-M always get logs :Sep 8 15:11:59.139: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/9, changed state to downSep 8 15:12:00.146: %LINK-3-UPDOWN: Interface Gigabit...

What are the difeerences between Nexus, Catalyst, Meraki und Business Switches ?I couldn't find any useful information on Internet. Can anyone explain me ? 

Hello,We have a C3064PQ-10Gx with 10-12gbps bps and around 4m pps and we have in mind to enable sFlow to analyze the traffic, so i want to make sure if i enable sFlow it will not impact on the nexus CPU normally or while i am under DDOS Attacks? beca...

We've got a SAN server coming in, and they want me to set up these 3850 switches to build the network.  I've never set up a SAN network, so I'm unsure what I need to enable and change. Does anyone have an idea of things to do to this switch to ensure...

Hi, Anyone knows if IE 1000 supports REP? I read through the IE1000 manuals and it doesn't have any information on it. thank you for your time in advance!-tom 

This switch was part of a stock of two switches. one day this switch failed and start rebooting I quickly remove the switch and replace it with a new one.Now am trying to recover this switch. Some of what I have tried1.   copy the .bin file to a USB ...

2960xas long i understand netflow lite collects sampled trafficip flow monitor MyFlow_monitor inputvsip flow monitor MyFlow_monitor sampler xy inputwhat's the difference between the 2? is a default sampler used in the first version? c1111which suppor...

I apologize for having an elementary understanding of networking but please help me out if you get the chance.  I currently have three L2/3 Cisco 2960's in three separate data racks that are housing amplifiers and and other public address equipment. ...

I have a Cisco Nexus 5672UP that is currently running v7.1(0)N1(1b) of the OS. Is there a version that I have to upgrade to first before upgrading to the latest and greatest? Also, is it non-disruptive at all or will a switch reboot be required?

hello all,  I have a cisco switch and I need to connect authentication by windows radius server 2019, I configure the server and try to enable aaa in the switch. I type  aaa new-modelradius server .....only this commend after reconnect to switch I se...

Hello Experts; I am planning to implement a 6509 switch with two supervisor cards, each supervisor card has two 10Gig ports, I like to know if the 10Gig ports on both supervisor cards are operational and can be used even one of the supervisor card is...

Hi all, i want to protect my recursive DNS server (unbound) that is connected to routed interface on switch. I applyed this ACL rule as output, but the resolving on server stopped resolving after few seconds. The connection to server and ping to inte...