asked on

EIGRP between Two sites

Hi,

We have two sites in both location we have two core switches.

We are planing to run GLBP between core switches in both locations to get load balancing between VLAN traffic.

We have two links between the sites both ends its terminated in core switches (One is in primary core an other one is in secondary core)

Core 1---------Location 1---------Core 2
| |
| |
Core 1--------Location 2----------Core 2

we would like to configure EIGRP between these two sites to get load balancing and more bandwidth availability.

Both ends its cisco 4500 switches. one end we are using 192.168.x.x and another end 172.16.10.0. Both locations using Location2 internet circuits to go out.

Is anyone can help to implement these.

Thanks in Advance

amitabhg

ASKER

what is the best way to implement this...??

nrpanchal

EIGRP uses Bandwidth and delay by default to count metrics. If cost is equal for both links, EIGRP itself will perform load balancing. If not, you can use Variance command.

I am assuming you are looking for Loadbalancing between two offices only.

HTH
nayan panchal

amitabhg

ASKER

Hi Nayan,

yes i am Looking for Load balancing could you please tell me how to configure this...??

amitabhg

ASKER

Hi

is any one there to help in this....??

nrpanchal

Please refer following link:

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009437d.shtml

If you still require futher information, let us know.

HTH
nayan panchal

amitabhg

ASKER

Hi Nayan,

Thanks for the link i am new to this so is there any document for configuration steps as per my above diagram.

Thanks
Durga

Les Moore

If both of the links are the same speed and type, load balancing is automatic with EIGRP.
Just be sure to use max-paths command

router eigrp 100
max-paths 2
network x.x.x.0 <== this is just the WAN link subnet
redist connected

amitabhg

ASKER

Hi Irmoore,

Thanks for your reply sorry for the late reply

192.168.0.0 Network
S1Core 1---------Location 1---------S1Core 2
| Gig 1/1 IP 10.10.1.1 | Gig 1/2 IP 10.10.1.2
| |
| 100Mb Link | 100 Mb link
| |
| Gig 1/1 IP 10.10.1.3 | Gig 1/2 IP 10.10.1.4
S2 Core 1--------Location 2----------S2Core 2
172.16.0.0 Network

in my scenario at present in both sites core switches are connected with Ether Chanel and HSRP running between these two switches.

when i configure EIGRP

router eigrp 100
max-paths 2
network 10.10.1.0
redist connected

is this enough in both end switches....??

where should i route 172.16.0.0 network in site 1(S1) same 192.168.0.0 in site 2 (S2)

Les Moore

172.16.0.0 is directly "connected" to S1
S1 redistributes connected to S2
192.168.0.0 is directly conected to S2
S2 redistributes connected to S1
That's all you need.

amitabhg

ASKER

Hi Irmoore,

Thanks for your reply i will implement this and let you know if i have any problems

amitabhg

ASKER

Hi Irmoore,

we are going to configure like below could you please check and let me know if it can do the load balance or not. and also please let me know if there is any other better way to do it.(Our main intention is to use both the links and at the same time Switch file over)

Please find attached Network diagram.

Configuration:-

S1Core 1:
inter giga 2/8
no switchport
ip address 10.10.1.1 255.255.255.0

Router eigrp 10
no passive-interface GigabitEthernet2/8
network 172.16.0.0 0.0.255.255
network 10.10.0.0 0.0.255.255
no auto-summary

S2 Core 2:
inter giga 2/8
no switchport
ip address 10.10.2.1 255.255.255.0

Router eigrp 10
no passive-interface GigabitEthernet2/8
network 172.16.0.0 0.0.255.255
network 10.10.0.0 0.0.255.255
no auto-summary

S2 Core 1:
inter giga 2/8
no switchport
ip address 10.10.2.2 255.255.255.0

Router eigrp 10
no passive-interface GigabitEthernet2/8
network 172.16.0.0 0.0.255.255
network 10.10.0.0 0.0.255.255
no auto-summary

S2 Core 2:
inter giga 2/8
no switchport
ip address 10.10.1.2 255.255.255.0

Router eigrp 10
no passive-interface GigabitEthernet2/8
network 172.16.0.0 0.0.255.255
network 10.10.0.0 0.0.255.255
no auto-summary

HSRP---EIGRP2.jpg

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Les Moore

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amitabhg

ASKER

Our Distribution switches are 4500 with Sup II

we cant run EIGRP in those.

apart from this its working fine TanQ.

amitabhg

ASKER

is it possible to run OER in the place of EIGRP in between these 4 switches.

Les Moore

You might have to have Advanced IP services IOS to run OER, and personally, I think that would be over-complicating your setup.
HSRP to the distribution switches is still your weak point.

amitabhg

ASKER

what about GLBP instead of HSRP.

amitabhg

ASKER

i checked OER but one of my site have 4500 switch as Core and it will not support OER.