Switching

How to stop a Distributed Denial of Service (DDOS) attack on Cisco router

Hi, I was tried recovering ROMmon mode for the below switch with the IOS version c2960-lanbasek9-mz.152-2.E4.bin . I downloaded thi IOS to flash with Xmodem and set this IOS with Boot flash:c2960-lanbasek9-mz.152-2.E4.bin after that I'm not seen the ...

Hi, I have implemented this scenario wherein the DHCP server is 3 router's away or 3 hops away from the access layer switches. I have connected two cisco routers on the access switches that emulates PC1 and Rogue DHCP server in that order. I have sh...

is there any reason why we need to use end command? when we configure router or switch, we can input " do wr" at any time, but i do see people enter " end", then "wr", is there any difference? if no difference, why we just use "do wr"

Hello, I know that Cisco Nexus 5548UP is trusting by default DSCP or cos incoming his ethernet interfaces. Could you tell me how to configure untrust on other interfaces that don't need to be trusted because no ToIP servers in there ? I can't find an...

I am building DMVPN with VRF, I use the command crypro keyring xxx vrf xyz presharedkey  address 0.0.0.0 0.0.0.0 key yyy does xxx need to equal yyy and we should use same password? thanks

Hi , We are facing issue in our network as our network is sending maximum traffic to hub location even in idle time the situation is the same. We need to identify the what traffic is coming with source address and from where it is coming .. we have...

I want to be able to connect my test environment from my office. I'm running a testlab with 3x routers, 3x switches and a access switch. this lab is not on the same floor as where my office is, and the only way to connect the lab to my office is thro...

Hello, Our company inherited two Cisco Aironet 1242AG access points to which we were not given the level_15_access (admin) username and password. Is it possible to reset the admin username and password without performing a factory reset (and deleting...

I am trying set up redundant links to the Remote network 10.15.128.0. The switches R1 and R2 are running rip V2. vlan 17 is running over a metro e link so R1 and R3 are at one physical location while R2 and R4 are at another. R3 and R4 are provided/m...

Here is one that’s been bugging me for ages, I’ve got a 2691 IOS router running in the latest version of GNS3 (1.4.6 as of today) and the latest version of W10 Pro. The router is bound to a cloud which is then connected to an interface on the host wi...

I've got 3 access points that, topologically, are in a triangle. AP 1  connects to AP 2 and that connects to AP 3. AP2            AP3 AP1 I'd like to change it so that AP 1 connects to AP 3 and not AP 2. This is the, what I believe to be, relevant...

Hello, I have weird problem on our 2960 Access Switches where the switch automatically activates port-security randomly on the random computers on the network.  I don't move the computer once its in place like just today it happened in the CEO's comp...