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Cisco 3640 Configuration (newbie questions)

cisco
Level 1
Level 1

I have a 3640 router and i'm needing some basic configuration help with it;

since i'm new i'm really sure how to ask the questions i need answers for;

my problem is; i can't configure the router as a firewall and dhcp server. from the reading i've done online... this router should be able to do that just fine.

i'm needing some basic configurations on settings up dhcp and firewall config as well as getting the machines (on the switch) connecting to the 'net via 3640;

i want a setup kind of like...

NET/CABLE CONNECTION ---> [3640] | [FIREWALL - internal DHCP] -> [100base switch] ---> [50 machines]

I sure did pick a big router to tackle as my first. eh? ;]

3 Replies 3

thisisshanky
Level 11
Level 11

First I would like to see a "show version" output of the router. Your IOS feature neccessarily need not support the features you are trying to configure. What version of IOS and feature set are you runnning on the box? When you say firewall configs, are you trying to configure access-lists ?? To enable DHCP

try

ip dhcp pool LAN

network 192.168.1.0/24

default-router <>

lease 3

dns <>

HTH

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus

Router#show version

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-I-M), Version 12.1(1)T, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2000 by cisco Systems, Inc.

Compiled Sat 18-Mar-00 04:31 by ccai

Image text-base: 0x600088F0, data-base: 0x608E4000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (f

c1)

Router uptime is 0 minutes

System returned to ROM by power-on

System image file is "flash:c3640-i-mz_121-1_T.bin"

cisco 3640 (R4700) processor (revision 0x00) with 44032K/5120K bytes of memory.

Processor board ID 24832463

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

Basic Rate ISDN software, Version 1.1.

1 Ethernet/IEEE 802.3 interface(s)

1 Serial network interface(s)

2 ISDN Basic Rate interface(s)

DRAM configuration is 64 bits wide with parity disabled.

125K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2142

-------------------------

yeah i'm needing dhcp out of this router and as far as a firewall; i'm kind of looking for a hardware firewall; as in being able to block ip's &/or ports from reaching the internal network (everything behind the router).

i'm going to swap the NM-1E to a NM-2FE;

how is my routers current config anyhow? does it have enough ram and cpu power? i've heard these are powerful routers though i dont know where mine sits (fair - good -poor,etc).

I think the problem is that you are using IP only image on the 3640. Try upgrading to IP Plus and see if that helps!

Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus