Cisco SRP521W-K9-G1 Administration Guide - Page 29

Setting up the Interfaces of the Services Ready Platforms Setting up the WAN Interface 4 Adding a Subinterface Use the WAN Interface List page from the Internet Setup window to add a subinterface to the SRP. These options are the same as those for configuring a main WAN interface except you cannot configure an Ethernet subinterface for PPTP or L2TP. The SRP supports multiple logical interfaces per physical port. For Ethernet ports, VLAN interfaces are created as part of an IEEE 802.1p trunk. Multiple PVCs may be created on ADSL interfaces. The SRP supports up to 5 VLANS which can be used as either Local Area VLANs or WAN subinterfaces. Up to four PVCs can be configured on an ADSL interface. STEP 1 To add a new logical Internet connection, select the top level WAN from the Internet Setup page and click the Add (page) icon. The Internet Setup window for the new Internet connection opens. STEP 2 Choose the connection type required by your Internet Service Provide (ISP) as defined in the Ethernet WAN Interface Settings table. STEP 3 Choose an MTU option from the drop-down list. Unless a change is required by your ISP, we recommend that you set the MTU method to Auto, which allows the voice system to automatically choose the size. The default size is 1500 bytes. To specify another MTU size, choose Custom from the drop-down list and enter the size in bytes. The standard size for Ethernet networks is 1500 bytes. For PPPoE connections, the standard size is 1492 bytes. STEP 4 Click Submit to save your changes. The new connection is added to the WAN Interface List on the Internet Setup page. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 29