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🌐 HDLC and PPP: To establish connections between routers, we'll be configuring HDLC (High-Level Data Link Control) and PPP (Point-to-Point Protocol) at Layer 2. These protocols allow for efficient data transmission over WAN links.
🔍 Comparison with Ethernet: Before diving into configuration, let's compare HDLC and PPP with Ethernet, a protocol we're more familiar with. While Ethernet operates at both Layer 1 and 2, HDLC and PPP operate solely at Layer 2. Ethernet frames contain destination and source MAC addresses, while HDLC and PPP frames only have a destination address, making them simpler.
🖥️ Topology Setup: In our setup, we have routers, switches, and a demo laptop interconnected. We'll establish T1 connections between routers and configure HDLC on one link and PPP on another. Data will flow from the laptop to the router, across the HDLC and PPP links, and into another Ethernet network.
📦 Frame Differences: Comparing Ethernet frames with HDLC and PPP frames, we notice differences in header size and content. Ethernet frames contain destination and source MAC addresses, whereas HDLC and PPP frames only have a destination address. Additionally, Ethernet frames have a larger header and may vary in size due to MAC addresses, while HDLC and PPP frames have simpler headers.
Stay tuned, techno studs! We're about to get hands-on with configuring these protocols for efficient WAN connectivity. #Cisco1841 #WANConfiguration 🚀🔌
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