Newsgroup: it.comp.reti.cisco
Titolo: Problema NAT 827

Ciao,
   ho un cisco 827 che vorrei utilizzare con Alice ADSL con interfaccia
PPPoE. Il router si configura correttamente ma provo ad utilizzare la lan
interna ho qualche problema. Qualcuno potrebbe verificarmi la
configurazione?
Grazie 1000
---------------------------------------------
Current configuration:
!
! Last configuration change at 22:14:12 europe Mon Jun 23 2003 by Cisco
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log datetime localtime
service password-encryption
!
hostname router
!
logging buffered 10000 debugging
enable secret 5 xxxxxxxxxxxxxx
enable password 7 yyyyyyyyyy
!
clock timezone europe 1
ip subnet-zero
ip name-server 194.243.154.62
!
ip dhcp pool CLIENT
   import all
   network 10.39.99.0 255.255.255.0
   default-router 10.39.99.1
   dns-server 194.243.154.62 151.1.1.1
!
vpdn-group 1
!
vpdn-group pppoe
 request-dialin
  protocol pppoe
!
vc-class atm ppp
  encapsulation aal5snap
!
interface Ethernet0
 ip address 10.39.99.1 255.255.255.0
 ip nat inside
 no ip mroute-cache
 hold-queue 100 out
!
interface ATM0
 no ip address
 no ip mroute-cache
 load-interval 30
 no atm auto-configuration
 no atm ilmi-keepalive
 no atm address-registration
 no atm ilmi-enable
 pvc 8/35
  pppoe-client dial-pool-number 1
 !
 bundle-enable
 dsl operating-mode auto
 hold-queue 224 in
!
interface ATM0.1 point-to-point
 no ip mroute-cache
!
interface Dialer0
 no ip address
!
interface Dialer1
 mtu 1492
 ip address negotiated
 ip nat outside
 encapsulation ppp
 no ip route-cache
 no ip mroute-cache
 dialer remote-name redback
 dialer pool 1
 dialer-group 1
 pulse-time 0
 ppp authentication pap chap callin
 ppp chap hostname 
ute...@tin.it
 ppp chap password 7 xxxxxxxxxxxxxxxxx
 ppp pap sent-username 
ute...@tin.it
 password 7 xxxxxxxxxxxxxxxxx
 ppp ipcp dns request
 ppp ipcp wins request
!
no ip nat inside source list 1 interface Dialer0 overload
ip nat inside source list 101 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
!
access-list 101 permit ip 10.39.99.0 0.0.0.255 any
dialer-list 1 protocol ip permit
!
line con 0
 transport input none
 stopbits 1
line vty 0 4
 access-class 30 in
 exec-timeout 30 0
 login local
 length 0
!
sntp server 207.46.248.43
scheduler max-task-time 5000
end

 interface ATM0
ip nat out
un mayhem partiamo da qui
-- 
  Diplomazia: dire bravo cagnetto fino a che non trovi il bastone.
  Cisco  FAQ: 
http://mayhem.oltrelinux.com/icrc
  SPP  wpage: 
http://www.spippolatori.com
  Key on 
pgp.mit.edu
 ID C7393613


La configurazione funziona adesso ma solo parzialmente.
Spiego meglio su alcuni siti funziona e su altri no, ad esempio sul sito
dello cisco e microsoft funziona perfettamente ma su TIN no, anzi inizia a
connettersi e poi si rifiuta di proseguire dopo pochi bytes.
Qualche suggerimento?

Potesse servire:
Cisco Internetwork Operating System Software
IOS (tm) C820 Software (C820-Y6-M), Version 12.1(3)XG6, EARLY DEPLOYMENT
RELEASE SOFTWARE (fc1)
TAC Support: 
http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Fri 22-Feb-02 23:17 by ealyon
Image text-base: 0x80013170, data-base: 0x805E4C38
ROM: System Bootstrap, Version 12.1(1r)XB1, RELEASE SOFTWARE (fc1)
ROM: C820 Software (C820-Y6-M), Version 12.1(3)XG6, EARLY DEPLOYMENT RELEASE
SOFTWARE (fc1)
r-caramello uptime is 1 day, 8 hours, 51 minutes
System returned to ROM by reload at 23:19:08 europe Mon Jun 23 2003
System image file is "flash:c820-y6-mz.121-3.XG6.bin"
CISCO C827 (MPC855T) processor (revision 0x501) with 15360K/1024K bytes of
memory.
Processor board ID JAD04340HWF (3710905329), with hardware revision 6711
CPU rev number 5
Bridging software.
1 Ethernet/IEEE 802.3 interface(s)
1 ATM network interface(s)
128K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)
Configuration register is 0x3922

Prova ad impostare l'mtu sui tuoi PC a 1492.