officeserv 7400

OfficeServOfficeServ 7400 7400Enterprise IP Solutions

Quick Install Guide- Data Server –

GSIM QoS

Mar, 2006

OfficeServ Lab.

Samsung Electronics Co., Ltd.

MASKing(Mask Table)

FILTERing(Rule Table)

Classification

METERing(Metering Table)

Full match

Marking & Policing

Actions(Rule Table)

Out-Actions(Rule Table)

In-profile out-of-profile

Buffer Manager(drop precedence packet/cell limit)

Queue Scheduler(SP, RR, WRR)

Shaper(per egress port)Packet out

Partial match

NO_MATCH_ACTION(Mask Table)

DROPMarkingMapping

drop_preECN

GSIM QoS Architectures – based on BCM5696

Ingress

Egress

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Configuration : Ingress QoSConfiguration : Ingress QoS


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Configuration : Creating Class map(1) Configuration : Creating Class map(1)

Layer2 to Layer4 classification is supported.Layer2 to Layer4 classification is supported.


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Configuration : Creating Class Map(2) Configuration : Creating Class Map(2)

Note that if a class_map is created, it implicitly contains a class_entry as configured.


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Configuration : Creating Class EntryConfiguration : Creating Class Entry

New class entry’s match rule is inherited from that of its class map. So, only selected fields for the class map can be configured for class map entries. Especially, it is mandatory to configure range of IP or/and port fields of a class entry using the same bit-mask values as the class map. For above example, if netmask of class map for src/dest ip is 0xffffff00(/24), netmask of class entry for ip src/dest must be same. Also, this holds for port range. For above example, Mask value of source port is 0xfff0(/12).


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Configuration : Creating Policy Map(1)Configuration : Creating Policy Map(1)

Previously configured class maps can be associated with a new policy map. An incoming packet is searched against class_maps in the ascendant manner. 10 is lowest(highest priority) sequence.

If multiple class_maps are matched, incremental processing will be done but in case of conflicts(permit of one class_map, deny of the other), policy of class_map of lower sequence number is applied.


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Configuration : Creating Policy Map(2)Configuration : Creating Policy Map(2)

Default action for all class_maps associated with a policy_map is permit as confirm action.

User can add/delete/modify actions.


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Configuration : Policy Actions(1)Configuration : Policy Actions(1)


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Shaping by Token bucket. Limit (token rate), burst(bucket size)

If rate-limit is configured, actions are determined whether rate of traffic of this class is above limit or not.

traffic rate > limit => exceed actions are selected.

traffic rate <= limit => confirm actions are selected.


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Configuration : Service PolicyConfiguration : Service Policy


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Configuration : Egress QoSConfiguration : Egress QoS


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Configuration : CoS MappingConfiguration : CoS Mapping

1. A priority value for packet determined by 802.1p priority or configured priority by policy actions is mapped to a CoS queue according to CoS mapping. Multiple priority values can be mapped to one queue.

2. 2. Threshold of WRED is configurable. Generally, CoS queue with low priority has shorter threshold than that of high priority. If CoS queue length is larger than threshold, packets with drop precedence as 1 are dropped.


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Configuration : SchedulerConfiguration : Scheduler

3 types scheduler modes

- strict-priority

- Round-robin

- weighted-round-robin

weight value means packet count.


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officeserv 7400

Documents

policy of class

class maps

netmask of class map

multiple class

class map2

class map entries

netmask of class entry

class map1 layer2