HP 5900 Manual de usuario descargar pdf (Pagina 3)

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Network Time Protocol (NTP) and Secure Network Time Protocol

(SNTP)

synchronize timekeeping among distributed time servers and

clients; keep consistent timekeeping among all clock-dependent

devices within the network so the devices can provide diverse

applications based on the consistent time

Resiliency and high availability

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Intelligent Resilient Framework (IRF)

HP IRF technology enables HP FlexFabric to deliver resilient,

scalable, and secure data center networks for physical and

virtualized environments; up to four 5900 switches can be grouped

together in an IRF configuration, which allows them to be

configured and managed as a single switch with a single IP address;

this simplifies ToR deployment and management, reducing data

center deployment and operating expenses

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IEEE 802.1w Rapid Convergence Spanning Tree Protocol

increases network uptime through faster recovery from failed links

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IEEE 802.1s Multiple Spanning Tree

provides high link availability in multiple VLAN environments by

allowing multiple spanning trees

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Virtual Router Redundancy Protocol (VRRP)

allows groups of two routers to dynamically back each other up to

create highly available routed environments

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Hitless patch upgrades

allow patches and new service features to be installed without

restarting the equipment, increasing network uptime and

facilitating maintenance

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Ultrafast protocol convergence (< 50 ms) with standard-based

failure detection—Bidirectional Forwarding Detection (BFD)

enables link connectivity monitoring and reduces network

convergence time for RIP, OSPF, BGP, IS-IS, VRRP, MPLS, and IRF

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Device Link Detection Protocol (DLDP)

monitors link connectivity and shuts down ports at both ends if

unidirectional traffic is detected, preventing loops in STP-based

networks

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Graceful restart

allows routers to indicate to others their capability to maintain

routing table during a temporary shutdown and significantly

reduces convergence times upon recovery; supports OSPF, BGP, and

IS-IS

Layer 2 switching

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MAC-based VLAN

provides granular control and security; uses RADIUS to map a MAC

address/user to specific VLANs

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Address Resolution Protocol (ARP)

supports static, dynamic, and reverse ARP and ARP proxy

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Flow control

IEEE 802.3x flow control provides intelligent congestion

management via PAUSE frames

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Ethernet link aggregation

IEEE 802.3ad link aggregation of up to 128 groups of 16 ports;

support for Link Aggregation Control Protocol (LACP), LACP Local

Forwarding First, and LACP short-time provide a fast, resilient

environment that is ideal for the data center

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Spanning Tree Protocol (STP)

STP (IEEE 802.1D), Rapid STP (RSTP, IEEE 802.1w), and Multiple STP

(MSTP, IEEE 802.1s)

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VLAN support

provides support for 4,096 VLANs based on port, MAC address, IPv4

subnet, protocol, and guest VLAN; supports VLAN mapping

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IGMP support

provides support for IGMP snooping, fast-leave, and group-policy;

IPv6 IGMP snooping provides Layer 2 optimization of multicast

traffic

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DHCP support at Layer 2

provides full DHCP Snooping support for DHCP Snooping Option 82,

DHCP Relay Option 82, DHCP Snooping Trust, and DHCP Snooping

Item Backup

Layer 3 services

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Address Resolution Protocol (ARP)

determines the MAC address of another IP host in the same subnet;

supports static ARPs; gratuitous ARP allows detection of duplicate

IP addresses; proxy ARP allows normal ARP operation between

subnets or when subnets are separated by a Layer 2 network

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Dynamic Host Configuration Protocol (DHCP)

simplifies the management of large IP networks and supports client

and server; DHCP Relay enables DHCP operation across subnets

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Operations, administration, and maintenance (OAM) support

provides support for Connectivity Fault Management (IEEE 802.1AG)

and Ethernet in the First Mile (IEEE 802.3AH); provides additional

monitoring that can be used for fast fault detection and recovery

Layer 3 routing

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Virtual Router Redundancy Protocol (VRRP) and VRRP Extended

allow quick failover of router ports

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Policy-based routing

makes routing decisions based on policies set by the network

administrator

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Equal-Cost Multipath (ECMP)

enables multiple equal-cost links in a routing environment to

increase link redundancy and scale bandwidth

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Layer 3 IPv4 routing

provides routing of IPv4 at media speed; supports static routes, RIP

and RIPv2, OSPF, BGP, and IS-IS

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Open Shortest Path First (OSPF)

Interior Gateway Protocol (IGP) uses link-state protocol for faster

convergence; supports ECMP, NSSA, and MD5 authentication for

increased security and graceful restart for faster failure recovery

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