01-10-2003 08:19 AM - edited 03-02-2019 04:05 AM
Please see the config below. (I changed the ASN and the IP addresses so please don't get hung up on that) My goal is to load balance between FA2/0 and FA2/1, and have my default route (network) be both FA2/0 and FA2/1. If either link goes down, (which happens from time to time) will my eigrp traffic still flow through the other available link without issue, taking into account "variance" and "traffic-share"?
interface FastEthernet2/0
description 100 Mb connection to xxx
bandwidth 100000
ip address 10.1.1.6 255.255.255.252
ip access-group 103 in
ip access-group 104 out
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no keepalive
duplex full
speed 100
no cdp enable
!
interface FastEthernet2/1
description 100 Mb connection to xxx
bandwidth 100000
ip address 10.1.1.14 255.255.255.252
ip access-group 103 in
ip access-group 104 out
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no keepalive
duplex full
speed 100
no cdp enable
!
autonomous-system ???
!
router eigrp ???
redistribute connected
redistribute static
network 192.168.0.0
network 10.1.0.0
distance eigrp 9 10
variance 2
traffic-share balanced
no auto-summary
eigrp log-neighbor-changes
!
ip default-network 10.1.0.0
01-16-2003 08:26 AM
The configuration seems fine. The load balancing should work in this case.
However, I guess the ip default-network works in a classful manner.
So the command given should be ip default-network 10.0.0.0. Refer to this doc for the details.
http://www.cisco.com/en/US/tech/tk648/tk365/technologies_tech_note09186a0080094374.shtml#ipnetwork
In the scenario given by you, load balancing would work without the variance command also, since both the links have the same bandwidth.
01-16-2003 09:21 AM
Thanks for your reply. I was beginning to wonder if was that basic of a question that no one wanted to give a reply ... haha.
You are right about the ip default-network command. My default network is actually a class "B" address. As I stated, I changed the IP address for security issues. So I would have xxx.xxx.0.0 for my default route. That is a very good catch. Thanks for the info on the variance command as well.
Regards
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