The IP DSLAM software supports a number of standard and proprietary MIBs. This MIB module defines objects for the management via SNMP of the bridge functionality in the IP DSLAM. The bridge filter functionality from the IP DSLAM is configurable not only per subscriber but also per PVC for a specific subscriber. All the subscribers connected to a specific IP DSLAM share the same physically Ethernet interface, and to protect the subscribers from each other (e.g. from hacking and spoofing) the bridge is implemented with some proprietary filters.

One of these filters is a VLAN ID filter. With the use of this filter it is possible to limit the VLAN IDs that a end-user is allowed to use.

The filter is implemented as Access Control Lists, so the same filter can be attached to several end-users.

For further information about this filter please see the description of the following parameters: - vlanIdAclTable - vlanIdAclRuleTable - pvcUpstreamVlanIdAclId - pvcDownstreamVlanIdAclId

This mib contains subscriberInfoTable which contains a list of subscriber information that the IP-DSLAM has dynamically learned. From the table it is possible to read out following information of the subscriber : - MAC address - IP address - virtual MAC address - DHCP lease time - whether subscriber uses fixed forwarding functionality - gateway IP address - gateway MAC address

This mib contains the mcastFilterTable which contains multicast filter information for a PVC. Each entry describes a range of consecutive multicast group addresses which are allowed or disallowed. Each multicast group address range is mapped to a multicast Vlan and priority.

This mib contains the broadcastStormControl and multicastStormControl which protect the network from upstream broadcast/multicast storms. They will limit the traffic to the thresholds, broadcastStormControlThreshold multicastStormControlThreshold respectively. They can be enabled/disabled with broadcastStormControl multicastStormControl respectively Traffic with all 48 bits in MAC address set to 1 is checked by broadcastStormControl. Traffic that is not broadcast, but with ethernet multicast bit set, is checked by multicastStormControl.