Cisco UBR924 - uBR 924 Router Manual de usuario descargar pdf (Pagina 1)

Configuring GRE Tunnel Over Cable

Document ID: 12084

Introduction

Before You Begin

Conventions

Prerequisites

Components Used

Background Theory

Configure

Network Diagram

Configurations

Verify

Troubleshoot

Related Information

Introduction

This document contains descriptions, configurations and verifications for Generic Routing Encapsulation

(GRE) in a cable environment. GRE is a tunneling protocol developed by Cisco that encapsulates a wide

variety of protocol packet types inside IP tunnels.

Before You Begin

Conventions

For more information on document conventions, see the Cisco Technical Tips Conventions.

Prerequisites

There are no specific prerequisites for this document.

Components Used

The information in this document is based on the software and hardware versions below.

Cable Modem uBR924 running Cisco IOS® Software Release 12.1(5)T4•

Note: Although it is possible to configure GRE tunnels in other Cisco cable modem platforms, such as on the

uBR904 using different Cisco IOS versions, the official support for this feature is on Cisco IOS 12.1(5)T4 for

uBR920 and from Cisco IOS 12.1(3) for uBR910.

Cable Modem Platform

Cisco IOS Software Release

uBR920

12.1(5)T4

uBR910

From 12.1(3) and later

To run this configuration, you need to have IP connectivity between the two cable modems.

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Indice de contenidos

Pagina 1 - Before You Begin

Configuring GRE Tunnel Over CableDocument ID: 12084IntroductionBefore You Begin Conventions Prerequisites Components Used Backgrou

Pagina 2

Processor board ID FAA0422Q04FBridging software.1 Ethernet/IEEE 802.3 interface(s)1 Cable Modem network interface(s)3968K bytes of processor board Sys

Pagina 3

reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive set (10 sec)Tunnel source 11.11.11.11 (Etherne

Pagina 4

ubr924−b5db#show ip route 192.168.20.1 Routing entry for 192.168.20.0/24 Known via "connected", distance 0, metric 0 (connected, via interf

Pagina 5

The final test is to ping from PC1 to PC2, and PC2 to PC1.PC1 has an IP address of 9.9.9.1.PC2 has and IP address of 11.11.11.1.Ping from PC1 to PC2.

Pagina 6

Ping from PC2 to PC1.TroubleshootThere is currently no specific troubleshooting information available for this configuration.Related InformationTroubl

Pagina 7

Pagina 8 - Coming Online document

The information presented in this document was created from devices in a specific lab environment. All of thedevices used in this document started wit

Pagina 9

version 12.1no service single−slot−reload−enableno service padservice timestamps debug uptimeservice timestamps log uptimeno service password−encrypti

Pagina 10

ip rip receive version 2!−−− Receive RIP version 2 packets. cable−modem downstream saved channel 525000000 40 1 cable−modem mac−timer t2 40000 no cab

Pagina 11

!!!!!!!!interface Tunnel0!−−− Tunnel interface 0ip address 192.168.20.2 255.255.255.0!−−− IP address of the gre tunnel interface 0tunnel source Ethern

Pagina 12 - Ethernet interface (9.9.9.9)

network 10.0.0.0network 11.0.0.0no auto−summary!ip default−gateway 10.1.4.1ip classlessno ip http serverno ip http cable−monitor!snmp−server packetsi

Pagina 13 - Ping from PC1 to PC2

cable qos profile 8cable qos profile 10cable qos profile 10 grant−size 1500cable qos profile 12 guaranteed−upstream 100000no cable qos permission crea

Pagina 14 - Related Information

redistribute connected redistribute static network 10.0.0.0 network 172.16.0.0 no auto−summary!ip default−gateway 172.16.30.1ip classlessip route 0.0

Pagina 15 - Cisco Systems, Inc

Gateway of last resort is 172.16.30.1 to network 0.0.0.0 172.16.0.0/16 is variably subnetted, 4 subnets, 3 masksC 172.16.29.224/27 is direct