ECLB with IPS-4270

Can someone explain how the flow of traffic with the ECLB configuration. I do not understand how the traffic flows and if the user bridge VLAN must be on the switch or on the IP addresses. Thank you.

http://www.Cisco.com/en/us/products/HW/vpndevc/PS4077/products_configuration_example09186a0080671a8d.shtml

It is called load balancing, but it is really load split. The ELCB hashes the source and destination IP address and send this packet to one of the available paths (in your link, there are only two, but it could be more). This can cause the load balancing less even, but it is usually close enough.

In your link, the IPS has fill the two local area networks VIRTUAL, so traffic due to flow through the IPS for the hosts to the gateway. To answer your question, both the switch AND SPI must have these VLANS configured. The IPS will be configured as a pair of VLAN. The switch will have two separate VLANS configured.

-Bob

Tags: Cisco Security

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