Dear all,I have many DHCP servers in different subnets. They provide ip using mac-bindness. I wanted to centralize my DHCP servers. I configured router to be a DHCP relay agent using cisco 3750 layer 3 using " ip helper-address <dhcp address> " stu...

Dear all,Can Someone please explain to me about QnQ in Cisco as to what it is how it is done , in which series devices it can be done.Thanks in Advance

I work at an Internet Service Provider. One of our clients has his gateway as one of the subinterfaces in our router.int fa0/0.421encapsulation dot1q 421ip address this ip is routed via ospf These days since two days one amazing thing is happening. E...