M4250 Datasheet

TACACS+andRADIUSenhancedadministratormanagementprovidesstrict“Login”and“Enable”authenticationenforcementfortheswitchconguration,basedon
latestindustrystandards:execauthorizationusingTACACS+orRADIUS;commandauthorizationusingTACACS+andRADIUSServer;userexecaccountingforHTTP
andHTTPSusingTACACS+orRADIUS;andauthenticationbasedonuserdomaininadditiontouserIDandpassword
Superior quality of service
Advancedclassier-basedhardwareimplementationforLayer2(MAC),Layer3(IP)andLayer4(UDP/TCPtransportports)prioritization
8queues(7inastack)forprioritiesandvariousQoSpoliciesbasedon802.1p(CoS)andDiffServcanbeappliedtointerfacesandVLANs
Advancedratelimitingdownto1Kbpsgranularityandmininum-guaranteedbandwidthcanbeassociatedwithACLsforbestgranularity
Single Rate Policing feature enables support for
SingleRatePolicerasdenedbyRFC2697
• CommittedInformationRate(averageallowableratefortheclass)
• CommittedBurstSize(maximumamountofcontiguouspacketsfortheclass)
• ExcessiveBurstSize(additionalburstsizefortheclasswithcreditsrellataslowerratethancommitted
burstsize)
• DiffServ feature applied to class maps
AutomaticVoiceoverIPprioritizationwithprotocol-based(SIP,H323andSCCP)orOUI-basedAuto-VoIPupto144simultaneousvoicecalls
iSCSIFlowAccelerationandautomaticprotection/QoSwithAuto-iSCSI
Flow Control
802.3xFlowControlimplementationperIEEE802.3
Annex 31B specifications with Symmetric flow
control, Asymmetric flow control or No flow control
• Asymmetric flow control allows the switch to respond to received PAUSE frames, but the ports cannot
generate PAUSE frames
• Symmetricowcontrolallowstheswitchtobothrespondto,andgenerateMACcontrolPAUSEframes
Allows traffic from one device to be throttled for a
specified period of time: a device that wishes to in-
hibit transmission of data frames from another device
on the LAN transmits a PAUSE frame
• A device that wishes to inhibit transmission of data frames from another device on the LAN transmits a
PAUSE frame
UDLD Support
UDLD implementation detects unidirectional links
physicalports(UDLDmustbeenabledonbothsides
ofthelinkinordertodetectanunidirectionallink)
• UDLD protocol operates by exchanging packets containing information about neighboring devices
• The purpose is to detect and avoid unidirectional link forwarding anomalies in a Layer 2 communication
channel
Both“normal-mode”and“aggressive-mode”aresupportedforperfectcompatibilitywithothervendorsimplementations,includingport“D-Disable”triggeringcasesin
both modes
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AV Line Managed Switches
Datasheet | M4250 series
AV Line Managed Switches