HUAWEI – enable IGMP-snooping

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igmp-snooping is not a protocol but a feature that switches have to control multicast traffic. In a broadcast domain, multicast is flooded on all ports so the snooping mechanism listen for an IGMP client and send multicast traffic only on the necessary ports in the multicast forwarding table. Troubleshooting commands: .glitchlist crew

Nmap features

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Nmap is an opensource software that apparently scans IPs and TCP/UDP ports. But it can do more! In association with scripts, it can able to analyze targets at layer 7. In fact Nmap is loaded with a scripting engine aka NSE (Nmap Scripting Engine) that transform this tool in a vulnerability scanner. For a complete list of scripts look here! …

OSPF silent-interface

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When you want to interconnect 2 OSPF processes in static mode for design requirements or just temporary in a migration scenario you have to instruct routers to not receive routing update information and to not advertize networks to another router. By default when you start an OSPF process all interfaces of the router send Hello packets to discovery neighborships. To …