Ethernet Pause Frames; Link Bundle Monitoring - Dell Force10 S4810P Configuration Manual

High-density, 1ru 48-port 10gbe switch

Hide thumbs Also See for Force10 S4810P:

Table of Contents

Configure MTU size on an Interface

The E-Series supports a link Maximum Transmission Unit (MTU) of 12000 bytes and maximum IP MTU

of 9234 bytes. The link MTU is the frame size of a packet, and the IP MTU size is used for IP

fragmentation. If the system determines that the IP packet must be fragmented as it leaves the interface,

FTOS divides the packet into fragments no bigger than the size set in the

In FTOS, MTU is defined as the entire Ethernet packet (Ethernet header + FCS + payload)

Since different networking vendors define MTU differently, check their documentation when planing

MTU sizes across a network.

lists the range for each transmission media.

Table 23-5. MTU Range

Transmission Media

Monitoring linked LAG bundles allows traffic distribution amounts in a link to be monitored for unfair

distribution at any given time. A threshold of 60% is defined as an acceptable amount of traffic on a

member link. Links are monitored in 15-second intervals for three consecutive instances. Any deviation

within that time causes a Syslog to be sent and an alarm event to be generated. When the deviation clears,

another Syslog is sent and a clear alarm event is generated.

The link bundle utilization is calculated as the total bandwidth of all links divided by the total

bytes-per-second of all links. If monitoring is enabled, the utilization calculation is performed when the

utilization of the link-bundle (not a link within a bundle) exceeds 60%.

Enable link bundle monitoring using the

View all LAG link bundles being monitored using the

Ethernet Pause Frames

Threshold Settings

MTU Range (in bytes)

594-12000 = link MTU

576-9234 = IP MTU

is supported only on platform:

is supported on platforms

are supported only on platforms:

show running-config ecmp-group

Interfaces | 505