SmartSwitch Router User Reference Manual 43Chapter 2: Bridging Configuration GuideConfigure Bridging for Non-IP/IPX ProtocolsBy default, all non-routable protocols (AppleTalk and DECnet) are bridged within theSSR. All physical ports containing non-routable protocols should be assigned to the sameVLAN, thus allowing bridging between ports. Routing can still be performed on thedefined VLAN by assigning an IP or IPX interface.Configure Layer-2 FiltersLayer-2 security filters on the SSR allow you to configure ports to filter specific MACaddresses. When defining a Layer-2 security filter, you specify to which ports you wantthe filter to apply. Refer to the “Security Configuration Chapter” for details on configuringLayer-2 filters. You can specify the following security filters:• Address filtersThese filters block traffic based on the frame's source MAC address, destination MACaddress, or both source and destination MAC addresses in flow bridging mode.Address filters are always configured and applied to the input port.• Port-to-address lock filtersThese filters prohibit a user connected to a locked port or set of ports from usinganother port.• Static entry filtersThese filters allow or force traffic to go to a set of destination ports based on a frame'ssource MAC address, destination MAC address, or both source and destination MACaddresses in flow bridging mode. Static entries are always configured and applied atthe input port.• Secure port filtersA secure filter shuts down access to the SSR based on MAC addresses. All packetsreceived by a port are dropped. When combined with static entries, however, thesefilters can be used to drop all received traffic but allow some frames to go through.Monitor BridgingThe SSR provides display of bridging statistics and configurations contained in the SSR.To display bridging information, enter the following commands in Enable mode.Show IP routing table. ip show routesShow all MAC addresses currentlyin the l2 tables.l2-tables show all-macs
