EtherChannel Speed

[1507dayalpathak]

I have a question regarding Ether-channel.
ISP link is 100mbps.
If we create an EtherChannel by combining four ports, each with a speed of 100 Mbps, we can establish a logical link with a total speed of 400 Mbps.

1. “If PC intends to establish a connection with the internet, what would be the achievable speed for the PC”.?
2. “What would be the speed we can achieve while communicating on an Intranet?”

[M02@rt37]

Hello @1507dayalpathak 

The achievable speed for the PC is ultimately limited by its network interface. If the PC has a network interface card with a maximum speed of, for example, 100 Mbps, then even if the local network or EtherChannel has a higher capacity, the PC's connection speed will be limited to the maximum speed supported by its NIC.

[Joseph W. Doherty]

“If PC intends to establish a connection with the internet, what would be the achievable speed for the PC

Depends on the PC and LB Etherchannel algorithm being used.

Etherchannel limits a flow to only use one link.  So, one flow would not exceed 100 Mbps.

If multiple flows were used, and a LB was able to distribute across all the links, up to 400 Mbps might be achieved.

“What would be the speed we can achieve while communicating on an Intranet?”

Same as above.

[balaji.bandi]

ISP link is 100mbps.  - You mean to say you want to combine 4 ISP links (from same provider) - does the provider offer this port-bundling ?

If we create an EtherChannel by combining four ports, each with a speed of 100 Mbps, we can establish a logical link with a total speed of 400 Mbps.

as i have mentioned above - please clarify.

- What device model ?

- what PC  connected port Fast Ethernet port or Gigabit port ?

- the Speed in Intranet depends on the model of the device capacity - block and non-blocking port speed ?

The speed definition is varies from time to time -  as end to end communication established - even though you have 1GB link and far end have only 20MB, the is the only speed you get on the internet - nothing is CIR in the network, always best effort (where you are established the connection).