Dell PowerConnect 5212 Specifications Page 59
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Console(config)#bridge-ext gvrp
Console(config)#
Class of Service
Class of Service (CoS) allows you to assign priority to data packets when traffic in the switch is buffered due to congestion. This switch supports CoS by using
four priority queues for each port. Data packets in a port's high-priority queue will be transmitted before packets in the lower-priority queues.
The Class of Service page allows you to set the default priority for each port or trunk, and to configure the mapping of frame priority tags to the switch's four
priority queues. The page includes links to the following options:
l Port Settings — Sets the default priority for each port
l Trunk Settings — Sets the default priority for each trunk
l Traffic Classes — Configures the mapping of IEEE 802.1p priority tags to the switch's four traffic class queues
l Queue Scheduling — Configures Weighted Round Robin (WRR) queueing for the switch ports
l Layer 3/4 Priority — Configures the mapping of IP Precedence/DSCP values or IP TCP/UDP port numbers to the switch's four priority queues
Port Settings
In the Port Settings page, you can specify the default port priority for each port on the switch. All packets entering the switch that are untagged (do not
already have a priority value) are tagged with the specified default port priority and then sorted into the appropriate priority queue at the output port.
For each port listed in the Port column, you can assign the default port priority (from 0 to 7) to untagged frames received on the port. The default setting for
ports is 0.
NOTICE: The IEEE 802.1p tags specify eight levels of priority, from the lowest (0) to the highest (7). IP Precedence or IP DSCP values are mapped to
these priority tag levels, and the priority levels are mapped directly to the switch's four traffic class queues.
CLI Commands
The following table summarizes the equivalent CLI command for items in the Class of Service/Port Settings page.
Example
Command
Usage
switchport priority default default-
priority-id
Sets a priority for the incoming untagged frames or the priority of frames received by the device connected to the
specified interface
- Introduction 2
- Front-Panel Components 3
- Back-Panel Descriptions 4
- Management 4
- Installation 6
- Connecting the Console Port 7
- Password Protection 7
- SNMP Settings 8
- IP Address Assignment 8
- Management Interface 11
- General Information 12
- Example 13
- CLI Commands 13
- Versions 16
- System Logs Configuration 18
- Remote Logs Configuration 20
- IP Address 22
- Security 24
- Authentication Settings 27
- Jumbo Frame 30
- Firmware Upgrade 31
- Configuration 33
- Port Configuration 36
- Trunk Configuration 38
- Broadcast Control 40
- Port Mirroring 41
- Port Security 42
- Address Table 44
- Dynamic Addresses 45
- Address Aging 46
- Spanning Tree 47
- Bridge Settings 48
- Advanced Bridge Settings 50
- Port and Trunk Settings 51
- VLAN Membership 53
- Removing VLAN Membership 54
- Port Settings 55
- Trunk Settings 57
- Class of Service 59
- Traffic Classes 60
- Queue Scheduling 62
- Layer 3/4 Priority 63
- IP Precedence 64
- DSCP Priority 64
- Link Aggregation 67
- Communities 69
- IP Filtering 71
- Multicast Support 72
- IGMP Member Port Table 74
- Statistics 77
- Utilization Summary 80
- Counter Summary 80
- VLANs and Frame Tagging 84
- VLAN Configuration 84
- Automatic VLAN Registration 85
- VLAN Examples 86
- Example 2 87
- Back to Contents Page 90
- Appendix 91
- Management VLAN Access 92
- Technical Specifications 95
- Getting Help 95
- Problems With Your Order 96
- Product Information 97
- Before You Call 97
- Contacting Dell 97
- Regulatory Notices 104
- IC Notice (Canada Only) 105
- CE Notice (European Union) 105
- VCCI Notice (Japan Only) 105
- General 107
- Rack Mounting of Systems 108
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