Users Guide

Port-Based Traffic Control 909
PPS versus an absolute rate in Kbps. For example, if the configured limit is
10% on a 1 Gbps link, this is converted to ~25000 PPS, and this PPS limit is
set in the hardware.
What are Protected Ports?
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.
When an interface is enabled for routing (via the interface vlan command),
the port will no longer be operationally enabled as a protected port on the
interface. If the interface is part of a LAG or is a probe port, the feature is
disabled for the port.
What is Error Recovery?
The error recovery feature enables the administrator to configure the switch
to automatically bring interfaces that have been diagnostically disabled back
into service automatically. The administrator may configure the causes for
which error recovery will bring an interface back into service and may also
configure the time interval over which error recovery is attempted. If an
interface brought back into service by the error recovery mechanism has a
subsequent failure, it will again be diagnostically disabled.
What is Link Local Protocol Filtering?
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 EMC Networking
N-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.