DELL N3000 User Manual

Configuring Port-Based Traffic Control

configured limit is 10%, this is converted to ~25000 PPS, and this PPS limit 

is set in the hardware. You get the approximate desired output when 512 bytes 

packets are used.

The switch supports up to three separate groups of protected ports. Traffic 

can flow between protected ports belonging to different groups, but not 

within the same group.
A port can belong to only one protected port group. You must remove an 

interface from one group before adding it to another group. 
Port protection occurs within a single switch. Protected port configuration 

does not affect traffic between ports on two different switches. No traffic 

forwarding is possible between two protected ports.

The Link Local Protocol Filtering (LLPF) feature can help troubleshoot 

network problems that occur when a network includes proprietary protocols 

running on standards-based switches. LLPF allows Dell Networking N2000, 

N3000, and N4000 series switches to filter out various Cisco

 

proprietary 

protocol data units (PDUs) and/or ISDP packets if problems occur with these 

protocols running on standards-based switches. If certain protocol PDUs 

cause unexpected results, LLPF can be enabled to prevent those PDUs from 

being processed by the switch.
The LLPF feature can be configured per-port to block any combination (or 

all) of the following PDUs:

• Industry Standard Discovery Protocol (ISDP)
• VLAN Trunking Protocol (VTP)
• Dynamic Trunking Protocol (DTP)
• UniDirectional Link Detection (UDLD)
• Port Aggregation Protocol (PAgP)
• Shared Spanning Tree Protocol (SSTP)