06-23-2009 12:04 AM - edited 03-04-2019 05:12 AM
Hi All,
This has probably been answered some where but I can't find the answer.
I have a 2811 with 4 adsl cards fitted and a Ethernet connection to the LAN. I have configured all the ADSL's and they appear to be working.
Problem:
I can only get 1 link to pass traffic, I think it's a fault with the NAT but not sure how to fix it.
I've enclosed the router configuration with the IP address changed.
I would be grateful of any help
Ta
Graham
06-23-2009 01:05 AM
You need four ip nat inside statements, one for each interface.
Also you may need to use route maps in nat statement.
You do no need any ip virtual reassembly command.
06-23-2009 01:21 AM
Will I need 4 access list staments as well then?
06-23-2009 01:44 AM
No, I would have mentioned if that was the case.
06-23-2009 02:32 AM
OK
Being dumb here,
How do i get the nat to use all 4 interfaces as when I try to add another interface eg
ip nat inside source list 1 interface ATM0/3/0.1 overload
it just overwrites the entry as opposed to associating ATM0/3/0.1 with access list 1.
Ta
Graham
06-23-2009 03:08 AM
You have four interfaces, ATM0/x/0.1 where x goes from 0 to 3.
You should be able to enter them all, or use route-map instead of list.
06-24-2009 02:12 AM
Thanks for the help.
It's starting to come together but now the problem has changed.
I've got lines 1 and 3 working together (line 2 is in use on the old router) but line 0 has two problems.
1 --- Line 0 IP overlaps with line 1 IP, (initially I had been given the wrong IP for line 0)
2 --- Line 0 will not work at the same time as line 3. if either is enabled on its own it works OK but if both are enabled there is no response from either of them
Current config is (I know some are shown shutdown)
interface ATM0/0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0/0/0.1 point-to-point
description BE-1
ip address aaa.aaa.aaa.aaa 255.255.240.0
ip nat outside
ip virtual-reassembly
shutdown
no snmp trap link-status
atm route-bridged ip
pvc 0/101
oam-pvc manage
encapsulation aal5snap
!
!
interface ATM0/1/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0/1/0.1 point-to-point
description BE-2
ip address bbb.bbb.bbb.bbb 255.255.240.0
ip nat outside
ip virtual-reassembly
no snmp trap link-status
atm route-bridged ip
pvc 0/101
oam-pvc manage
encapsulation aal5snap
!
!
interface ATM0/2/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0/2/0.1 point-to-point
description BT-1
ip address ccc.ccc.ccc.ccc 255.255.255.0
ip nat outside
ip virtual-reassembly
no snmp trap link-status
atm route-bridged ip
pvc 0/101
oam-pvc manage
encapsulation aal5snap
!
!
interface ATM0/3/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0/3/0.1 point-to-point
description O2-1
ip address ddd.ddd.ddd.ddd 255.255.248.0
ip nat outside
ip virtual-reassembly
no snmp trap link-status
atm route-bridged ip
pvc 0/101
oam-pvc manage
encapsulation aal5snap
!
!
ip route 0.0.0.0 0.0.0.0 eee.eee.192.1
ip route 0.0.0.0 0.0.0.0 fff.fff.104.1
!
!
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat pool BE-2 aaa.aaa.aaa.aaa aaa.aaa.aaa.aaa netmask 255.255.240.0
ip nat pool BE-1 bbb.bbb.bbb.bbb bbb.bbb.bbb.bbb netmask 255.255.240.0
ip nat pool O2-1 ccc.ccc.ccc.ccc ccc.ccc.ccc.ccc netmask 255.255.248.0
ip nat pool BT-1 ddd.ddd.ddd.ddd ddd.ddd.ddd.ddd netmask 255.255.255.254
ip nat inside source route-map BE-1-map pool BE-1
ip nat inside source route-map BE-2-map pool BE-2
ip nat inside source route-map BT-1-map pool BT-1
ip nat inside source route-map O2-1-map pool O2-1
ip nat inside source route-map O2-2-map pool O2-2
!
logging trap debugging
access-list 1 remark INSIDE_IF=FastEthernet0/0
access-list 1 remark SDM_ACL Category=2
access-list 1 permit zzz.zzz.zzz.zzz 0.0.0.255
no cdp run
!
!
route-map O2-1-map permit 10
match ip address 1
match interface ATM0/3/0.1
!
route-map O2-2-map permit 10
match ip address 1
match interface FastEthernet0/1
!
route-map BE-2-map permit 10
match ip address 1
match interface ATM0/1/0.1
!
route-map BE-1-map permit 10
match ip address 1
match interface ATM0/0/0.1
!
route-map BT-1-map permit 10
match ip address 1
match interface ATM0/2/0.1
06-26-2009 12:56 AM
Hello Graham,
>> Line 0 IP overlaps with line 1 IP, (initially I had been given the wrong IP for line 0)
fix this give the correct ip address to line 0 and then try again.
Hope to help
Giuseppe
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