Ping protection mechanism

Created: Oct 12, 2019 03:31:47Latest reply: Oct 12, 2019 03:32:39 59 1 0 0
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Why design such a mechanism?

Can you explain it in detail? Does this mechanism make a difference between a fixed switch and a modular switch


  • x
  • convention:

Featured Answers
Popeye_Wang
Admin Created Oct 12, 2019 03:32:39 Helpful(0) Helpful(0)

Ping is a typical software processing mechanism. If the ping destination is a switch, the switch software needs to process the ICMP packet. The CPU processing capability always has an upper limit. If there are too many resources allocated to ping, the resources allocated to other more important resources will decrease.

From the perspective of the network layer, switches are used to transparently transmit bottom-layer data. In this case, In this case, the switch forwards the data through a dedicated forwarding chip. Therefore, you can ping the destination end on the source end to check the delay when the switch functions as the pipe network to forward data.

So the difference between soft forwarding and hardware forwarding is the key to understanding this phenomenon.

When the ping destination is a switch, the CPU processing capability of the fixed switch is different from that of the modular switch. Therefore, the packet interval at which CPU can process is different. A modular switch can process a smaller interval than a fixed switch. If the ping destination is not a switch and the switch forwards only the ICMP packets, there is no difference between the fixed switch and the modular switch.

  • x
  • convention:

All Answers
Popeye_Wang
Popeye_Wang Admin Created Oct 12, 2019 03:32:39 Helpful(0) Helpful(0)

Ping is a typical software processing mechanism. If the ping destination is a switch, the switch software needs to process the ICMP packet. The CPU processing capability always has an upper limit. If there are too many resources allocated to ping, the resources allocated to other more important resources will decrease.

From the perspective of the network layer, switches are used to transparently transmit bottom-layer data. In this case, In this case, the switch forwards the data through a dedicated forwarding chip. Therefore, you can ping the destination end on the source end to check the delay when the switch functions as the pipe network to forward data.

So the difference between soft forwarding and hardware forwarding is the key to understanding this phenomenon.

When the ping destination is a switch, the CPU processing capability of the fixed switch is different from that of the modular switch. Therefore, the packet interval at which CPU can process is different. A modular switch can process a smaller interval than a fixed switch. If the ping destination is not a switch and the switch forwards only the ICMP packets, there is no difference between the fixed switch and the modular switch.

  • x
  • convention:

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