HP 7500 Series Datasheet page 8

Data sheet | HP 7500 Switch Series
8
• Internet-group-management protocol (IGMP) and multicast-listener-discovery (MLD) protocol
snooping
Controls and manages the flooding of multicast packets in an L2 network
• Device link detection protocol
Monitors link connectivity and shuts down ports at both ends if unidirectional traffic is
detected, helping prevent loops in STP-based networks
• IEEE 802.1ad Q-in-Q and selective Q-in-Q
Increase the scalability of an Ethernet network by providing a hierarchical structure; and
connect multiple LANs on a high-speed campus or metro network
• Super VLAN
Saves IP address space, using RFC 3069 standard (also called VLAN aggregation)
• Per-VLAN spanning tree plus
Allows each VLAN to build a separate spanning tree to improve link bandwidth usage in
network environments with multiple VLANs
L3 services
• Address resolution protocol (ARP)
Determines the MAC address of another IP host in the same subnet; includes support for static
ARPs; a gratuitous ARP allows detection of duplicate IP addresses; and a proxy ARP allows
normal ARP operation between subnets or when subnets are separated by an L2 network
• UDP helper
Redirects UDP broadcasts to specific IP subnets to help prevent server spoofing
• Dynamic host configuration protocol (DHCP)
Simplifies the management of large IP networks and supports both clients and servers; DHCP
relay enables DHCP operation across subnets
• Domain name system (DNS)
Provides a distributed database that translates domain names and IP addresses, simplifying
network design; and supports clients and servers
L3 routing
• Static IPv4 routing
Provides simple manually configured IPv4 routing
• RIP
Uses a distance vector algorithm with UDP packets for route determination; supports RIPv1
and RIPv2 routing; and includes loop protection
• OSPF
Delivers faster convergence; uses this link-state routing interior gateway protocol (IGP), which
supports ECMP, NSSA, and MD5 authentication for increased security and graceful restart for
faster failure recovery