Two problems with a single ESW-540-24

We sold an ESW 540 switch a customer to 3COM, which replaces the old equipment. This replacement will be on different faces, then connect some switches 3COM to Cisco equipment. We install rigth now and this two situations:

  • Machines virtual can´t obtain IP through DHCP addresses (using a different MAC address) when it is connected to the Cisco switch. Physical machines receive the IP addresses of the DHCP server without problem. This situation happened with 3COM switches.
  • When we interconect switch Cisco switches 3COM (do not use the uplink ports) the connection never goes up. Remembering that the 3COM switches are old we sets the speed to 100 Mbps Full Duplex, but it did not work.

Please help me configure the Cisco switch,

Kind regards

Jiga.

Hello Juan,.

It is possible that the two problems may be related by the same question. The ESW 500 series uses a wizard smartport. If you want to test this, open a session in the ESW and under the home page, access the smartport Wizard and change the port to 'other '.

Often the default value is set on computer, which allows only a MAC address to register on this port. This will stop most of the switches to transit traffic and in this case a second MAC address of your VM stops passing traffic.

Tags: Cisco Support

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