Administrator Guide

To view link dampening on a port extender interface.
Dell(conf-if-range-pegi-255/1/36-37)#do show interface
Interface Supp Flaps Penalty Half-Life Reuse Suppress Max-Sup
State
PeGi 255/1/36 Up 0 0 20 200 800 100
PeGi 255/1/37 Up 0 0 20 200 800 100
To view a dampening summary for the entire system, use the show interfaces dampening summary command from EXEC
Privilege mode.
Dell# show interfaces dampening summary
20 interfaces are configured with dampening. 3 interfaces are currently suppressed.
Following interfaces are currently suppressed:
Te 0/2
Te 3/1
Te 4/2
Dell#
Clearing Dampening Counters
To clear dampening counters and accumulated penalties, use the following command.
• Clear dampening counters.
clear dampening
Example of the clear dampening Command
Dell# clear dampening interface Te 0/1
Dell# show interfaces dampening TengigabitEthernet0/0
Interface State Flaps Penalty Half-Life Reuse Suppress Max-Sup
Te 0/1 Up 0 0 20 500 1500 300
Port Pipes
A port pipe is a Dell Networking-specic term for the hardware packet-processing elements that handle network trac to and from a set of
front-end I/O ports. The physical, front-end I/O ports are referred to as a port set. The system has 10 switch cards and each card has only
one port pipe and 48 ports in each.
• For ports connected through the port extender, you can have a maximum of 4 sessions system.
• For ports directly attached to the chassis you can have a maximum of 4 sessions per port pipe.
Refer to Port Numbering Convention for the exact port location on switch line cards.
Congure MTU Size on an Interface
Maximum Transmission Unit (MTU) is dened as the entire Ethernet packet (Ethernet header + FCS + payload).
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, the system divides the packet into fragments no bigger than the size set in the ip mtu
command.
NOTE
: Because dierent networking vendors dene MTU dierently, check their documentation when planning MTU sizes
across a network.
The following table lists the range for each transmission media.
464
Interfaces