1 / 9

Basic Linux Router I

Basic Linux Router I. touch@coe.psu.ac.th. Router, a device that. Working on OSI Layer 3 (Network Layer) Connected to more than one networks Finding a best path to deliver packets Forward packets from one network to another Can run on either dedicated device or personal computer.

mali
Télécharger la présentation

Basic Linux Router I

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Basic Linux Router I • touch@coe.psu.ac.th

  2. Router, a device that ... • Working on OSI Layer 3 (Network Layer) • Connected to more than one networks • Finding a best path to deliver packets • Forward packets from one network to another • Can run on either dedicated device or personal computer

  3. Routing.. How it works. • Default Gateway • Routing Table • Routing mechanism • Static Routing • Dynamic Routing

  4. Default Gateway • An address for host to deliver packet to, if source and destination host are not in the same subnet • Default Gateway Example...

  5. Routing Tables • Kernel IP routing table • Destination Gateway Genmask Flags Metric Ref Use Iface • 202.12.74.192 0.0.0.0 255.255.255.192 U 0 0 0 eth1 • 192.100.77.0 172.30.0.1 255.255.255.0 UG 0 0 0 eth0 • 172.30.0.0 0.0.0.0 255.255.252.0 U 0 0 0 eth0 • 192.168.0.0 172.30.0.1 255.255.0.0 UG 0 0 0 eth0 • 172.16.0.0 172.30.0.1 255.240.0.0 UG 0 0 0 eth0 • 0.0.0.0 202.12.74.193 0.0.0.0 UG 0 0 0 eth1

  6. Routing Mechanism • Static Routing • Dynamic Routing • Interior Routing Protocol • RIP, OSPF, IGRP • Exterior Routing Protocol • BGP, EIGRP

  7. Routing Devices • Dedicated Devices • Enterprise • Cisco, 3COM, Juniper, Huawei, etc. • SOHO • Various broadband router. • PC based Devices • Linux Router

  8. Linux Router command • ifconfig [-v][-a][-s][interface] • route [-CFvnee] • route [-v][-A family] add [-net|-host]target[netmask Nm][gw Gw][metric N][mss M][window W][irtt I][reject][mod][dyn][reinstate][[dev]If] • route [-v][-A family] del [-net|-host] target [gw Gw][netmask Nm][metric N][[dev]If] • route [-V][--version][-h][--help]

  9. Linux Router command • ping [ -LRUbdfnqrvVaAB][ -c count] [ -i interval] [ -l preload][-p pattern] [ -s packetsize] [ -t ttl] [ -w deadline][ -F flowlabel] [ -I interface] [ -M hint] [ -Q tos][ -S sndbuf] [ -T timestamp option] [ -W timeout][ hop ...] destination • traceroute [ -dFIlnrvx ] [ -f first_ttl] [ -g gateway] [ -i iface] [ -m max_ttl] [ -p port] [ -q nqueries] [ -s src_addr] [ -t tos] [ -w waittime] [ -z pausemsecs ] host [ packetlen ]

More Related