Dear all,I have a catalyst 4500 series swtich version (cat4500e-UNIVERSAL-M), Version 03.08.01.EI am connected to another L3 switch which conneting me to the internet and I name it internet_switch.From the port which is directely connected to the int...

I have a VTP domain of 8 switches(cisco 3560) with 400 VLANs, on one of the switch I am getting the following log message: %SPANTREE_VLAN_SW-2-MAX_INSTANCE: Platform limit of 128 STP instances exc I have assigned IP address to VLAN 11 and 12 on all...

Hello everyone, I am facing SSDP amplification DDOS attack on my network, I am using cisco routers and switches and widows clients. what configuration on cisco routers and switches and what appliance do you recommend to fix this issue.

Dear All, Hope all is well. We are an ISP of 2 Gbps backbone bandwidth, and want to have a security appliance on our backbone to keep our own and our customers network secure. What would you guys recommend? Thanks in advance for your replies.

How can I find a list of all CISCO switches, routers and security devices, for access, distribution and core layer? Any idea please?