By Inc. Cisco Systems
If you happen to can give some thought to the matter, Internetworking Troubleshooting guide most likely has the answer - no less than in terms of networking difficulties. This 714-page tome is really extra special in scope. although you'll no longer locate in-depth scholarly discussions of networking woes, you'll find pragmatic information which could assist you via an instantaneous concern. And the configuration displays, tables, and diagrams are either crucial and necessary additions to the text.Divided into six sections, the 1st outlines basic problem-solving concepts in addition to to be had troubleshooting instruments from Cisco and third-party owners. subsequent, the authors deal with undefined, booting, and media (which primarily capability solutions as to what should be fighting the community routers or switches from instantly firing up). additionally, strength Ethernet, FDDI (Fiber allotted info Interface), and Token Ring malfunctions are greater than sufficiently addressed.The seven chapters of part three deal solely with routing protocols from TCP/IP to AppleTalk to the extra imprecise Banyan VINES. As for WAN connectivity, greater than a hundred pages are devoted to serial line, dial-in, ISDN, body relay, and X.25 connections. And if you are experiencing hassle on your ATM or LAN switching setting, together with your defense servers, or with CiscoWorks, this group of authors has supplied invaluable information for these concerns to boot. The 5 appendices - "Creating center Dumps," "Memory Maps," "Technical aid Information," "References and suggested Reading," and "Troubleshooting Worksheets" - also are necessary.
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Additional resources for Internetworking Troubleshooting Handbook
Verify that the server is listed and that the routing table entries are appropriate. 4. Use the clear arp-cache and clear ip-route privileged exec commands to force the router to repopulate its ARP and routing tables. 5. Try to network boot the router again. 1. Shut down all extra interfaces except the one over which you intend to network boot the router. 2. Use the no ip proxy-arp interface configuration command on all neighboring routers to disable their capability to provide proxy ARP responses.
If there is no response from the server, use the show arp exec command to look for an entry in the ARP table that is associated with the server. 4. Use the show ip route exec command to view the IP routing table. Look for an entry in the table for the network or subnet of the server. 244, 0:02:22, Ethernet2 If a path to a boot server exists, a disconnected network is not the problem. If no path exists, make sure that a path is available before again attempting to network boot. continues Internetworking Troubleshooting Handbook, Second Edition 1-58705-005-6 3-33 Chapter 3 Troubleshooting Hardware and Booting Problems Troubleshooting Booting Problems Table 3-10 Booting: Router Cannot Network Boot from TFTP Server (continued) Possible Problem TFTP server is down Solution 1.
Internetworking Troubleshooting Handbook, Second Edition 3-20 1-58705-005-6 Chapter 3 Troubleshooting Hardware and Booting Problems Troubleshooting Booting Problems Caution To prevent damage to components that are sensitive to electrostatic discharge (ESD), attach ESD protection before opening a chassis. Make certain that the power cord is connected but that power is off. ESD damage prevention guidelines are provided in the hardware installation and maintenance publication for your router. If a part replacement appears to solve a problem, reinstall the suspect part to verify the failure.
Internetworking Troubleshooting Handbook by Inc. Cisco Systems