User manual D-LINK DES-3326SRM Reference Guide

[. . . ] DES-3326SR Layer 3 Switch Command Line Interface Reference Manual (April 2003) DES3326SR. . . 1 Printed In Taiwan RECYCLABLE i Wichtige Sicherheitshinweise 1. Um eine Beschä digung des Gerä tes zu vermeiden sollten Sie nur Zubehö rteile verwenden, die vom Hersteller zugelassen sind. Bei der Aufstellung des Gerä tes ist auf sichern Stand zu achten. [. . . ] The max_latency parameter allows you to 156 QOS Commands Description DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual config scheduling specify the maximum amount of time that packets will be delayed before being transmitted. For a given priority queue, a value between 0 and 255 can be specified. This number is then multiplied by 16 milliseconds to determine the maximum allowed latency. For example, if 3 is specified for queue 0, the maximum latency allowed will be 3 X 16 ms = 48 ms. When queue 0 has been waiting to transmit packets for longer than 48 ms, the currently transmitting priority queue is allowed to finish transmitting its current packet, and then queue 0 is allowed to begin transmitting its packets. Parameters <class_id> - Specifies which of the four priority queues the config scheduling command will be applied to. The four priority queues are identified by number - from 0 to 3 - with queue 0 being the highest priority. max_packet <value 0-255> - Specifies the maximum number of packets the above specified priority queue will be allowed to transmit before allowing the next lowest priority queue to transmit its packets. max_latency <value 0-255> - Specifies the maximum amount of time the above specified priority queue will have to wait QOS Commands 157 DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual config scheduling before being allowed to transmit any packets that have accumulated in its transmit buffer. A value between 0 and 255 can be specified - with this value being multiplied by 16 ms to arrive at the total time the priority queue will have to wait. Restrictions Only administrator-level users can issue this command. Example Usage: To create DES-3326SR:4# config scheduling 0 max_packet 100 max_latency 150 Command: config scheduling 0 max_packet 100 max_latency 150 Success. DES-3326SR:4# show scheduling Purpose Syntax Description Used to display the currently configured traffic scheduling on the switch. show scheduling The show scheduling command displays the current configuration for the maximum number of packets (max_packets) and the maximum latency (max_latency) values assigned to the four priority queues on the QOS Commands 158 DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual show scheduling switch. At this value it will empty the four hardware queues in order, from the highest priority (queue 0) to the lowest priority (queue 3). Parameters Restrictions Example Usage: To display the current scheduling configuration: DES-3326SR:4# show scheduling Command: show scheduling None. Latency ------------------- -----------------Class-0 50 1 Class-1 100 1 Class-2 150 1 Class-3 200 1 DES-3326SR:4# QOS Commands 159 DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual config 802. 1p user_priority Purpose Used to map the 802. 1p user priority of an incoming packet to one of the four hadware queues available on the switch. config 802. 1p user_priority <priority 0-7> <class_id 0-3> The config 802. 1p user_priority command is used to configure the way the switch will map an incoming packet, based on its 802. 1p user priority tag, to one of the four hardware priority queues available on the switch. The switch' default is to map the s incoming 802. 1p priority values to the four hardware queues according to the following chart: 802. 1p Value --------0 1 2 3 4 5 6 7 Switch Priority Queue -----------------1 0 0 1 2 2 3 3 Remark ----------- Syntax Description Parameters <priority 0-7> - Specifies which of the 8 802. 1p priority values (0 through 7) you want to map to one of the switch' hardware s priority queues (<class_id>, 0 through 3). 160 QOS Commands DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual config 802. 1p user_priority <class_id 0-3> - Specifies which of the switch' hardware priority queues the s 802. 1p priority value (specified above) will be mapped to. Restrictions Only administrator-level users can issue this command. Example Usage: To configure 802. 1 user priority on the switch: DES-3326SR:4# config 802. 1p user_priority 1 3 Command: config 802. 1p user_priority 1 3 Sucess. DES-3326SR:4# QOS Commands 161 DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual show 802. 1p user_priority Purpose Used to display the current mapping between an incoming packet' 802. 1p s priority value and one of the switch' four s hardware priority queues. show 802. 1p user_priority The show 802. 1p user_priority command displays the current mapping of an incoming packet' 802. 1p priority value to s one of the switch' four hardware priority s queues. None. Syntax Description Parameters Restrictions Example Usage: To show 802. 1p user priority: DES-3326SR:4# show 802. 1p user_priority Command: show 802. 1p user_priority COS Class of Traffic Priority-0 -> <Class-1> Priority-1 -> <Class-0> Priority-2 -> <Class-0> Priority-3 -> <Class-1> Priority-4 -> <Class-2> Priority-5 -> <Class-2> Priority-6 -> <Class-3> Priority-7 -> <Class-3> DES-3326SR:4# 162 QOS Commands DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual config 802. 1p default_priority Purpose Used to specify how to map an incoming packet that has no 802. 1p priority tag to one of the switch' four hardware priority s queues. config 802. 1p default_priority [<portlist>/all] <priority 0-7> The config 802. 1p default_priority command allows you to specify the 802. 1p priority value an untagged, incoming packet will be assigned before being forwarded to its destination. [. . . ] delete ospf virtual_link <area_id> <neighbor_id> This command will delete an OSPF virtual interface from the switch. <area_id> - A 32-bit number in the form of an IP address (xxx. xxx. xxx. xxx) that uniquely identifies the OSPF area in the OSPF domain. OSPF Configuration Commands 339 DES-3326SR Layer 3 Fast Ethernet Switch CLI Reference Manual delete ospf virtual_link <neighbor_id> - The OSPF router ID for the remote area. This is a 32-bit number in the form of an IP address (xxx. xxx. xxx. xxx) that uniquely identifies the remote area' Area Border Router. Restrictions Usage Example To delete an OSPF virtual interface from the switch: DES-3326SR:4#delete ospf virtual_link 10. 1. 12 20. 1. 1. 1 Command: delete ospf virtual_link 10. 1. 12 20. 1. 1. 1 Success. [. . . ]