... VLAN Trucking, and VLAN Stacking IGMP v1, v2 SnoopingThe IES-5000 Series is equipped with non-blocking gigabit backplane, failover- ... embedded IP-centric QoS, security and multicasting features, the IES-5000- chassis-based system facilitates Telco/ISP delivering high degree of ... , flexibility and scalability at competitive CAPEX/OPEX. The IES-5000 Series is temperature-hardened and can be installed in ...