![]() Cisco HDLC is the default for data encapsulation at Layer 2 (data link) of the Open System Interconnection (OSI) stack for efficient packet delineation and error control. #Cisco product lookup by serial number serialCisco HDLC also provides a simple control protocol called Serial Line Address Resolution Protocol (SLARP) to maintain serial link keepalives. To configure serial interfaces, you should understand the following concept:Ĭisco High-Level Data Link Controller (HDLC) is the Cisco proprietary protocol for sending data over synchronous serial links. Information About Configuring Serial Interfaces Indicates that loopback is not configured. Indicates that the hardware loopback status is configured on the serial interface. Indicates the interface status and shows that line protocol is up. Table 4-2 LEDs on the Serial WAN Module LED Name #Cisco product lookup by serial number seriesTable 4-2 describes the LEDs on the Cisco 800M series serial WAN module. Table 4-1 Smart Serial Cabling for Cisco 800M Series ISRs Product Number Information about the cables supported by Cisco 800M Series ISRs are provided in Table 4-1. Supports asynchronous speed of up to 115.2 kbpsĬisco 800M Series ISRs use Cisco smart serial connectors.Supports synchronous speed of up to 8 Mbps.Supports the following serial protocols.Supports the following encapsulations :.The features supported by the single-port serial module on Cisco 800M Series ISR is given as follows: Serial module in slot 0 and serial module in slot 1.3G module in slot 0 and serial module in slot 1.Serial module in slot 0 and 3G module in slot 1.The Cisco 800M Series ISR has 2 WAN slots that can host single-port serial module or multi-mode 3G module and supports the following combinations. The Cisco 800M Series ISR supports both synchronous and asynchronous modes of communication. The Cisco 800M Series Integrated Services Router (ISR) provides serial WAN connectivity to remote sites using Cisco High-Level Data Link Control (HDLC), Point-to-Point Protocol (PPP), or Frame Relay encapsulation through the pluggable, serial WAN interface module. ![]() Information About Configuring Serial Interfaces.This chapter describes configuring the serial interface for Cisco 800M Series ISRs in the following sections: ![]()
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