CCNA,CCNP,CCIE Blogs

CISCO TFTP ERROR CODE 11 RECEIVED - 18025 Seems like there is an extra TFTP service running on Windows, possibly conflicting with TFTP32. Would you mind stopping it and trying again? Windows 7 TFTP: error code 11 received - 18025 or %Error opening tftp:// Objective : Copy my switches/routers running-config to TFTP server(which is on my laptop) ​ Error : TFTP: error code 11 received - 18025 Attempts : Login to another workstation that's on the same LAN, DLed the TFTPd64 application and successfully utilizes the TFTP  to copy the running-config file of the switch. Then I know it's SOMETHING on my computer. Solution : That something is the "WinAgents TFTP Service 4" service started automatically, so I had to disable that service. WOOHOO the TFTP is working again! Note : The solution fits my environment, so it may helped you out and it may not. Which I hope it will.​ And then you see msg like this... ​Router# Router#copy flash: tftp: ...

DHCP ON CISCO Router-   Dynamic Host Configuration Protocol (DHCP), is used to automatically assign network parameters like IP address, mask, gateway, and DNS information to network clients .  While DHCP server services are traditionally deployed on network servers, it isn’t uncommon to see a DHCP server role configured on a router or switch in smaller environments. Enable The DHCP Server Service The first step is to enable the DHCP server service on the router. BranchRouter# configure terminal BranchRouter(config)# service dhcp Define The DHCP Pool Now we define the range of addresses the router should assign to client requests. The range is referred to as a pool. BranchRouter(config)# ip dhcp pool MARKETING BranchRouter(dhcp-config)# network 172.16.1.0 255.255.255.0 In this example, the statement  network 172.16.1.0 255.255.255.0  directs the router to issue IP addresses to clients using range 172.16.1.1-172.16.1.254. This defines...