Black Box LR1112A-T1/E1, LR1114A-T1/E1, LR1104A-T1/E1, LR1102A-T1/E1 manual 134

Black Box LR11xx Series Router Configurations Guide

packet will be forwarded to the IP layer for local processing. If the address does not match the address of the Black Box system, the packet will be forwarded to all interfaces configured for the management VLAN with the exception of the interface where it was received. This allows all transmission equipment to be managed in a single, flat VLAN.

When the Black Box system generates traffic on to the management VLAN, an ARP request is generated in the direction of the VLAN’s default route. If no default is configured, the ARP request will be generated in all possible directions, and the interface receiving the response will be cached with the reply. The source MAC address used by the Black Box will be associated with the Ethernet port associated with the management VLAN.

In a multi-tenant unit (MTU) where customer Internet access is through the Ethernet interface, some form of bandwidth control is necessary to prevent a high bandwidth customer from blocking others since the uplink out of the building will typically be less than 10 Mbps. Black Box provides QoS support to limit customer bandwidth using a committed rate and burst rate, ensuring that customers get consistent bandwidth performance as other customers are activated. Black Box’s QoS can be configured based on VLAN IDs, in increments of 64 kbps providing greater control than what is normally available in Ethernet switches.

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