User manual D-LINK DES-1228P INSTALLATION GUIDE

[. . . ] 24-Port 10/100Mbps PoE Web Smart Switch with 4-Port 10/100/1000Base-T and 2-Port Combo SFP DES-1228P User Manual V1. 20 TABLE OF CONTENTS About This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Terms/Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] By adjusting the Query Interval, the number of IGMP messages can increase or decrease; larger values cause IGMP Queries to be sent less often. Default is 125 seconds. 44 Max Response Time (10-25 sec): The Max Response Time specifies the maximum allowed time before sending a responding report. Adjusting this setting effects the "leave latency", or the time between the moment the last host leaves a group and when the routing protocol is notified that there are no more members. It also allows adjustments for controlling the frequency of IGMP traffic on a subnet. Robustness Variable (1-255 sec): The Robustness Variable allows adjustment for the expected packet loss on a subnet. If a subnet is expected to be lossy, the Robustness Variable may be increased. Last Member Query Interval (1-25 sec): The Last Member Query Interval is the Max Response Time inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of time between Group-Specific Query messages. This value may be adjusted to modify the "leave latency" of the network. A reduced value results in reduced time to detect the loss of the last member of a group. Host Timeout (130-1225 sec): This is the interval after which a learnt host port entry will be purged. For each host port learnt, a 'PortPurgeTimer' runs for 'HostPortPurgeInterval'. This timer will be restarted whenever a report message from host is received over that port. If no report messages are received for 'HostPortPurgeInterval' time, the learnt host entry will be purged from the multicast group. Router Timeout (60-600 sec): This is the interval after which a learnt router port entry will be purged. For each router port learnt, a 'RouterPortPurgeTimer' runs for 'RouterPortPurgeInterval'. This timer will be restarted whenever a router control message is received over that port. If no router control messages are received for 45 'RouterPortPurgeInterval' time, the learnt router port entry will be purged. Leave Timer (0-25 sec): This is the interval after which a Leave message is forwarded on a port. When a leave message from a host for a group is received, a group-specific query is sent to the port on which the leave message is received. A timer is started with a time interval equal to IgsLeaveProcessInterval. If a report message is received before above timer expires, the Leave message is dropped. To enable IGMP snooping for a given VLAN, select Enable and click on the Apply button. [. . . ] : 06 1 461-3001 Fax : 06 1 461-3004 email : support@dlink. hu URL : http://www. dlink. hu Teknisk Support Du kan finne programvare oppdateringer og bruker dokumentasjon på D-Links web sider. D-Link tilbyr sine kunder gratis teknisk support under produktets garantitid. Kunder kan kontakte D-Links teknisk support via våre hjemmesider, eller på tlf. Teknisk Support: D-Link Teknisk telefon Support: 800 10 610 (Hverdager 08:00-20:00) D-Link Teknisk Support over Internett: http://www. dlink. no Teknisk Support Du finder software opdateringer og brugerdokumentation på D-Link's hjemmeside. D-Link tilbyder gratis teknisk support til kunder i Danmark i hele produktets garantiperiode. [. . . ]