04-21-2008 12:23 AM - edited 03-05-2019 10:30 PM
Hi,
I have a question regarding a 1841 router (2 FE ports) with 4-port ethernet switch card installed running IOS version 12.4(9)T1.
I have 2 ADSL through both FastEthernet ports, for Internet connection. Internal connection is provided through ethernet card.
Is it possible configure a third ADSL connection through another ethernet port of switch card?
Thanks in advance for any information,
Albert
04-25-2008 06:13 AM
Yes it is possible to configure a third ADSL connection through another ethernet port of switch card.
To know about the configuration of the router 1841 you can use the following URL:
http://www.cisco.com/en/US/prod/collateral/routers/ps5853/product_data_sheet0900aecd8016a59b.html
04-25-2008 09:40 AM
Hi Albert,
I guess you are talking about HWIC-4ESW card, which is basically a Layer 2 etherswitch module.
Its not possible to assign IP Address directly on the physical interface.
Having said that, it supports Switched Virtual Interface SVI. So what you need to do is create a SVI, assign IP address on the SVI and associate that VLAN with the physical interface.
Thus the IP address would be associated with that Interface on which you can terminate the ADSL routers ethernet connection.
Create a VLAN -
vlan database
VLAN 22
Create SVI -
interface vlan 22
ip add 10.20.20.20 255.255.255.0
no shut
Assign the vlan to the physical interface -
interface FastEthernet 0/1/0
switchport access vlan 22
no shut
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t8/feature/guide/esw_cfg.html#wp1051418
Now, you have terminated 3 ADSL routers on 1841 on the ethernet interfaces. Imagine the Main ADSL connectivity going down. Would your 1841 router be able to detect the link failure.
Not really the ethernet connection between 1841 and ADSL would remian UP doesn't matter if the main ADSL link is UP and down.
So the 1841 router would keep on sending the traffic to the failed link and packets would be dropped by the ADSL router.
How do you overcome this - Use SAA probes. It keeps on sending ICMP packets to the remote destination which has to be after your ADSL router. This SAA object needs to be associate with the "route" pointing towards that destination. When the ICMP reply packets are not received by the router the SAA object would go down and the route would be removed from the routing table.
I am not sure where these ADSL connecties are going, otherwise I could have been more specific.
-> Sushil
04-30-2008 01:03 AM
Many thanks for your information. That guides me to next router configuration.
Albert
05-01-2008 07:03 AM
Hi Albert,
I'm not a CISCO expert but I'm trying configure something similar.
I have a 1841 router (2 FE ports) with 4-port ethernet switch card. I'm trying to configure FE 0/0 for ADSL with FIX IP and FE 0/1 with Dynamic IP. Both FE 0/0 & FE 0/1 connected to different modem provided by service provider. I also want to enable the load balancing / load sharing feature.
The 4-port ethernet switch card will be connect to LAN.
Can you tell me how to do it?
Thank you in advance,
Chang
E-mail : jfchang7@streamyx.com
05-01-2008 11:16 AM
Here's a configuration example. If you want redundancy there are also more advanced examples in the same CCO section, but please begin with the basics here:
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080950834.shtml
Hope this helps, please rate post if it does!
05-04-2008 05:18 AM
Thanks for your reply. I manage to setup vlan1 and DHCP for FE/0/0/0 - FE/0/0/3, and configure IP for both FE 0/0 & FE 0/1. Following is my setting...
Building configuration...
Current configuration : 2768 bytes
!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname FABER
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 3 log
security passwords min-length 6
logging buffered 51200 debugging
logging console critical
enable secret xxx
!
no aaa new-model
!
resource policy
!
clock timezone PCTime 8
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
no ip source-route
ip cef
!
!
ip tcp synwait-time 10
no ip dhcp use vrf connected
ip dhcp excluded-address 10.10.10.1
ip dhcp excluded-address 20.20.20.255 20.255.255.254
ip dhcp excluded-address 20.0.0.1 20.20.20.9
!
ip dhcp pool sdm-pool1
import all
network 20.0.0.0 255.0.0.0
default-router 20.20.20.1
dns-server 202.x.x.5 202.188.0.133
!
!
no ip bootp server
ip domain name yourdomain.com
ip name-server 202.188.1.5
ip name-server 202.188.0.133
!
username admin privilege 15 secret xxx
!
!
!
interface FastEthernet0/0
description $ETH-SW-LAUNCH$$INTF-INFO-FE 0$$ES_LAN$$FW_INSIDE$$ETH-LAN$
ip address 192.168.100.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip route-cache flow
duplex auto
speed auto
no mop enabled
!
interface FastEthernet0/1
description $ES_WAN$$FW_OUTSIDE$$ETH-WAN$
ip address dhcp client-id FastEthernet0/1
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip route-cache flow
duplex auto
speed auto
no mop enabled
!
interface FastEthernet0/0/0
!
interface FastEthernet0/0/1
!
interface FastEthernet0/0/2
!
interface FastEthernet0/0/3
!
interface Vlan1
ip address 20.20.20.1 255.0.0.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip route-cache flow
!
ip classless
!
ip http server
ip http authentication local
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat pool DHCP 20.20.20.1 20.20.20.100 netmask 255.0.0.0
ip nat inside source list 1 interface FastEthernet0/1 overload
!
logging trap debugging
access-list 1 remark INSIDE_IF=FastEthernet0/0
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 20.20.20.0 0.0.0.255
no cdp run
!
control-plane
!
banner login ^CAuthorized access only!
Disconnect IMMEDIATELY if you are not an authorized user!^C
!
line con 0
login local
transport output telnet
line aux 0
login local
transport output telnet
line vty 0 4
privilege level 15
login local
transport input telnet
line vty 5 15
privilege level 15
login local
transport input telnet
!
scheduler allocate 4000 1000
end
I still don't know which part should I add in for the Load-balancing for FE 0/0 & FE 0/1.
Thanks in advanced...
05-04-2008 10:51 AM
You need:
ip nat inside source list 1 interface FastEthernet0/0 overload
ip route 0.0.0.0 0.0.0.0
Hope this helps, please rate post if it does!
05-13-2008 06:17 AM
Hi,
Thanks for your reply. I'm not good at CISCO IOS Command prompt. Can I do it in Cisco SDM?
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