Chapter 1: Introduction
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TOS / DSCP / IP Precedence of IPv4/IPv6 packets
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IP TCP/UDP port number
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Typical network application
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Strict priority and Weighted Round Robin (WRR) CoS policies
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Supports QoS and In/Out bandwidth control on each port
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Traffic-policing policies on the switch port
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DSCP remarking
Multicast
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Supports IGMP snooping v1, v2, and v3
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Supports MLD snooping v1 and v2
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Querier mode support
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IGMP snooping port filtering
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MLD snooping port filtering
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Multicast VLAN Registration (MVR) support
Security
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Authentication
− IEEE 802.1x Port-Based / MAC-Based network access authentication
− Built-in RADIUS client to co-operate with the RADIUS servers
− TACACS+ login users access authentication
− RADIUS / TACACS+ users access authentication
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Access Control List (ACL)
− IPv4 / IPv6 IP-based ACL
− MAC-based ACL
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Source MAC / IP address binding
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DHCP snooping to filter distrusted DHCP messages
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Dynamic ARP inspection discards ARP packets with invalid MAC addresses to IP
address binding.
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IP source guard prevents IP spoofing attacks.
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Auto DoS rule to defend against DoS attacks.
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IP address access management to prevent unauthorized intruders.
Management
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Switch management interfaces:
− Remote Telnet management
8
NS3550-8T-2S Industrial Managed Switch User Manual
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