06-07-2008 03:42 AM - edited 03-03-2019 10:16 PM
Hi, i need some help, i have in my company a router 7206VXR that have 3 T1s of internet and we group it in a Multilink interface with a BVI interface but i can see that we never can reach more than just 1 T1 of the internet, and i wanna know if i'm doing something wrong or what is the best practice for that scheme.
This is my configuration:
interface Multilink1
no ip address
no ip redirects
no ip unreachables
ip accounting access-violations
no cdp enable
ppp multilink
multilink-group 1
bridge-group 1
!
interface Serial4/0:0
bandwidth 1536
no ip address
no ip redirects
no ip unreachables
ip accounting access-violations
ip load-sharing per-packet
encapsulation ppp
load-interval 30
ppp multilink
multilink-group 1
!
interface Serial4/1:0
bandwidth 1536
no ip address
no ip redirects
no ip unreachables
ip accounting access-violations
ip load-sharing per-packet
encapsulation ppp
load-interval 30
ppp multilink
multilink-group 1
!
interface Serial4/2:0
bandwidth 1536
no ip address
no ip redirects
no ip unreachables
ip accounting access-violations
ip nat outside
ip load-sharing per-packet
encapsulation ppp
load-interval 30
ppp multilink
multilink-group 1
!
interface BVI1
bandwidth 4608
ip address 200.x.x.1 255.255.255.0
no ip redirects
no ip unreachables
ip accounting access-violations
ip nat outside
ip load-sharing per-packet
no ip route-cache
no ip mroute-cache
!
ip nat inside source list 1 interface BVI1 overload
ip route 0.0.0.0 0.0.0.0 BVI1
!
access-list 1 permit 192.168.0.0 0.0.255.255
access-list 1 permit 172.21.0.0 0.0.255.255
Thanks!!
06-07-2008 03:58 AM
The remote-end needs to have Multilink configured as well. It's that the case here?
__
Edison.
06-07-2008 04:20 AM
Yes it is, the ISP have the multilink configured as well, but i wanna know if i missing something or have something wrong in the configuration.
06-07-2008 04:29 AM
Hi, you don't need the BVI interface. Delete it, and change all references to that, to be multilink1 instead.
The if multilink doesn;t work you have to work with the ISP as they may have "forgot" something.
06-07-2008 04:36 AM
As Paolo says, ideally you want to use the Multilink interface as your L3 interface instead of the BVI, though your configuration may still work - it's just not optimal.
However, I don't think that your current problem. It seems the ISP is not configured properly on their side.
Please clear counters in the router and then post the show interface output from all interfaces after waiting for 5 minutes. I want to determine the path the traffic is taking and the status of the interfaces.
__
Edison.
06-07-2008 04:47 AM
Hi Edison, it's not that BVI is not optimal with multilink, it's just unnecessary, hence wrong.
Again please remove BVI and any bridge commands, and try again.
06-07-2008 05:01 AM
06-07-2008 07:19 AM
Your packets are flowing via the 3 T1s equally, I don't understand what's really the problem. The Multilink is working, however I agree with Paolo (Paolo, I wasn't contradicting you :)), configure the Multilink without the BVI and try again.
If you can't still sustain speed over 1.5Mbps, then talk to your provider. They may be oversubscribing the circuits or giving you less than what you are paying for.
__
Edison.
06-07-2008 07:40 AM
Hi
You need the ip address/mask on the multilink interface to create the bundle.
Rich
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