ZyXEL P-2601HN-F1 User Guide - Page 76
Technical Reference, 5.3.1 Encapsulation
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Chapter 5 Broadband Table 7 Broadband: Add/Edit: Bridge Mode (continued) LABEL Sustain Cell Rate DESCRIPTION The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be transmitted. Type the SCR, which must be less than the PCR. Note that system default is 0 cells/sec. Maximum Burst Size This field is available only when you select Non Realtime VBR or Realtime VBR. Maximum Burst Size (MBS) refers to the maximum number of cells that can be sent at the peak rate. Type the MBS, which is less than 65535. Apply Back This field is available only when you select Non Realtime VBR or Realtime VBR. Click Apply to save your changes back to the ZyXEL Device. Click Back to exit this screen without saving. 5.3 Technical Reference This section provides some technical background information about the topics covered in this chapter. 5.3.1 Encapsulation Be sure to use the encapsulation method required by your ISP. The ZyXEL Device supports the following methods. 5.3.1.1 PPP over Ethernet The ZyXEL Device supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF Draft standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.) connection. The PPPoE option is for a dial-up connection using PPPoE. For the service provider, PPPoE offers an access and authentication method that works with existing access control systems (for example RADIUS). One of the benefits of PPPoE is the ability to let you access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for individuals. Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no specific configuration of the broadband modem at the customer site. By implementing PPPoE directly on the ZyXEL Device (rather than individual computers), the computers on the LAN do not need PPPoE software installed, 76 P-2601HN(L)-F1 Series User's Guide