Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 447

To view link dampening on a port extender interface. Dell(conf-if-range-pegi-255/1/36-37)#do show interface Interface PeGi 255/1/36 PeGi 255/1/37 Supp State Up Up Flaps 0 0 Penalty Half-Life 0 20 0 20 Reuse 200 200 Suppress 800 800 Max-Sup 100 100 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-specific term for the hardware packet-processing elements that handle network traffic 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. Configure MTU Size on an Interface Maximum Transmission Unit (MTU) is defined 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 different networking vendors define MTU differently, check their documentation when planning MTU sizes across a network. The following table lists the range for each transmission media. Interfaces 447