BigIron RX Series Configuration Guide 31753-1001986-01Other VLAN features 11BigIron RX(config-vlan-903)# untagged ethernet 3/5 to 3/6BigIron RX(config-vlan-903)# pvlan type communityBigIron RX(config-vlan-903)# exitBigIron RX(config)# vlan 7BigIron RX(config-vlan-7)# untagged ethernet 3/2BigIron RX(config-vlan-7)# pvlan type primaryBigIron RX(config-vlan-7)# pvlan mapping 901 ethernet 3/2BigIron RX(config-vlan-7)# pvlan mapping 902 ethernet 3/2BigIron RX(config-vlan-7)# pvlan mapping 903 ethernet 3/2Other VLAN featuresAllocating memory for more VLANs or virtual routinginterfacesBy default, you can configure up to 512 VLANs and virtual routing interfaces on the device.Although this is the default maximum, the device can support up to 4089 VLANs and 4095 virtualrouting interfaces. (VLAN IDs 0, 4090, 4091, 4092 and 4095 are reserved.)NOTEIf many of your VLANs will have an identical configuration, you might want to configure VLAN groups.If you need to configure more than 512 VLANs, enter commands such as the following at the globalCONFIG level of the CLI.BigIron RX(config)# system-max vlan 2048BigIron RX(config)# write memoryBigIron RX(config)# endBigIron RX# reloadSyntax: [no] system-max vlan The parameter specifies the maximum number of VLANs that can be configured. Enter 1 –4089, but IDs 4091 – 4094 are reserved.Hardware flooding for Layer 2 multicast and broadcastpacketsBroadcast and multicast packets do not have a specific recipient. In order for these "special"packets to reach their intended recipient, they needed to be sent on all ports of the VLAN (or"flooded" across the VLAN).By default, the device performs hardware flooding for Layer 2 multicast and broadcast packets.(Layer 2 multicast packets have a multicast address in the destination MAC address field.)However, if uplink VLANs or protocol-based VLANs are configured, this default behavior isoverridden and software flooding is enabled.You can disable hardware flooding for Layer 2 multicast and broadcast packets on a per-VLANbasis. For example:BigIron RX(config)#BigIron RX(config)# vlan 2BigIron RX(config-vlan-2)# no multicast-flooding
