03-22-2007 04:28 AM - edited 03-03-2019 04:15 PM
I have subscribed two broadband links from the same ISP for connecting branch office to the head office. I am using Cisco2600 router at the branch and it has two ethernet interfaces. I am planning to use the two WAN links by configuring one ethernet port with two Ip addresses (using secondary address), is it possible Or could you please suggest another option for using the two links?
Thank you
tigist
03-22-2007 11:44 AM
Another option would be to use trunking
on that interface and create two
subinterfaces,each will represent a link to different ISP.
HTH,
OW
03-22-2007 10:58 PM
The ISPs devices for the two broadband WAN links are cisco UBR900 and Cisco soho AdsL.
The Cisco 2600 router that is found in the branch, one interface is configured for the branch network. I am having problem in configuring the second interface with two Networks (using secondary IP). I have already configured it with secondary IP. But the router uses only one of the WAN links for data transfer.
Could you please help me in configuring the Cisco 2600 router so that it would be able to use the two WAN links.
Thank You
Tigist
03-22-2007 11:49 PM
Tigist,
Please paste your branch router configuration.We will check and let you know the problem. try the below mentioned thing:
If you want to use both the links try adding two default routes on your branch 2600 router.
ip route 0.0.0.0 0.0.0.0
ip route 0.0.0.0 0.0.0.0
HTH,
-amit singh
03-23-2007 12:09 AM
Amit singh,
I have pasted below the configuration of the branch router. Please note that the ISP has forced as to use RIP.
Building configuration...
Current configuration : 911 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname XXXXXX
!
boot-start-marker
boot-end-marker
!
enable secret
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ftp-server write-enable
!
!
!
!
interface FastEthernet0/0
ip address 172.31.12.221 255.255.255.0
ip helper-address 192.168.0.2
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 172.31.22.2 255.255.255.0 secondary
ip address 172.31.2.2 255.255.255.0
duplex auto
speed auto
!
router rip
version 2
network 172.31.0.0
!
ip classless
ip http server
!
!
line con 0
line aux 0
end
Tigist
03-23-2007 12:19 AM
Tigist,
As you are using RIP, so we have to make sure that we are learing the HO routes via both the routers and if the metric is same the RIP should do the load-balancing.
Please paste the "show ip route " from your router and also let us know the " Ip subnets " that you have in the Head office .
-amit singh
03-23-2007 01:20 AM
Amit singh,
both WAN links learn the different routes ( as posted below). But fro the head office network I cannot ping or access one of the WAN links (ADSL). Please note that the two WAN links are from the same ISP.
how can I check the load (data transfered) from the WAN links?
XXXXXX#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/24 is subnetted, 1 subnets
R 172.16.1.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
172.31.0.0/24 is subnetted, 23 subnets
R 172.31.41.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
R 172.31.19.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
R 172.31.18.0 [120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
R 172.31.17.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
R 172.31.16.0 [120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
R 172.31.23.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
C 172.31.22.0 is directly connected, FastEthernet0/1
R 172.31.21.0 [120/2] via 172.31.2.1, 00:00:05, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:12, FastEthernet0/1
R 172.31.20.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.31.0 [120/2] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.3.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
C 172.31.2.0 is directly connected, FastEthernet0/1
R 172.31.1.0 [120/2] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.7.0 [120/2] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.6.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.5.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.11.0 [120/2] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.10.0 [120/3] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/3] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.9.0 [120/2] via 172.31.2.1, 00:00:12, FastEthernet0/1
[120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.8.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.15.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
R 172.31.13.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
C 172.31.12.0 is directly connected, FastEthernet0/0
172.30.0.0/24 is subnetted, 1 subnets
R 172.30.6.0 [120/2] via 172.31.22.1, 00:00:18, FastEthernet0/1
thank you,
Tigist
03-30-2007 03:52 PM
hello :
I agree with Amit singh
disable RIP and use the static routes
ip route 0.0.0.0 0.0.0.0 UBRXXX
ip route 0.0.0.0 0.0.0.0 ADSL 1
IF One link goes down the router will route the trafic by the link in service.
Another coments .. If you wanna have a HA schema why not acquire links with diferents ISP.
let me know if works.
Regards
Norman Santana
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