MetroE point2 point Cisco load balancing

[richskeldon]

Hi Guys,

I have two sites, A and B

Site A has a new Nexus 5672 and 3850 + checkpoint for Routing (Static)

Site B has only 3750 Stack (IP image) + checkpoint for Routing (Static)

Routing between the two is basic and currently managed over IPSEC

I now have a Diverse Point-to-point Metro E-line service between the two and I am told by the provider that I cannot use L2 Ethernchannel to aggregate the links.

I wanted to use the 3850 and 3750 to interconnect the two sites with GLBP to take advantage of the diverse path but this is not supported on the 3750. Would simple L3 Port channel be the best viable alternative?

I will be making larger changes to the topology in the early portion of next year (Dynamic Routing being the biggest change) but for now this has to go ahead as is. Any suggestions welcome, many thanks

[Mark Malone · Accepted solution]

Hi if you cant use l2 they probably wont allow l3 port-channel either as your probably not terminating on the same device on ISP side , you could use ip cef load balancing when you have parallel links to make use of them or use nat to LB , just some options may work for you

pfr is another option but if you only have base image it wont work you would need advanced image

http://www.cisco.com/en/US/products/hw/modules/ps2033/prod_technical_reference09186a00800afeb7.html

http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/100658-ios-nat-load-balancing-2isp.html

[richskeldon]

Thanks Mark, good point you make there - especially as the links are diverse so that would make sense. Cheers.

Richard