[c-nsp] LACP and Wireless links

[Andrew Jones]

do you need layer 2 adjacency? 

fast LACP timers might work, depending if the WAN provider forwards them across the SDH network for you. Some other layer 2 services such as VPLS don't. 

Configuring the links as routed links and using something like OSPF. EIGRP, with Bi-directional forwarding detection enabled would do the trick, if you don't need layer 2.


Andrew Jones
Alphawest

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Graham Beneke
Sent: Tuesday, 30 August 2011 10:05 PM
To: 'cisco-nsp at puck.nether.net'
Subject: [c-nsp] LACP and Wireless links

I have a current deployment where I have 6506's deployed in 2 data
centres with 2 diverse fibre paths between them. I'm using LACP to
bundle the fibre paths and it is working pretty well. We haven't had any
cable failures but our failover testing has worked.

I am about to deploy this same architecture in another network with one
slight difference: No fibre is available between the sites, I can only
get SDH based microwave links with ethernet hand-off.

The wireless links have a much higher chance of failing and there is
also no link sensing so I will need to have a more robust setup. I've
read about 'quick' LACP that has quicker keepalives and shorter timeouts
but I can't seem to find any command reference on configuring this.

Would LACP provide sufficient detection of forwarding failures? I don't
need much less than 5s failure detection.

Would UDLD provide any kind of benefit to this setup?

Thanks
-- 
Graham Beneke

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/


Alphawest Disclaimer

If this communication is not intended for you and you are not an authorised recipient of this email you are prohibited by law from dealing with or relying on the email or any file attachments.
This prohibition includes reading, printing, copying, re-transmitting, disseminating, storing or in any other way dealing or acting in reliance on the information.
If you have received this email in error, we request you contact Alphawest immediately by returning the email to postmaster at alphawest.com.au and destroy the original.
This email is confidential and may contain privileged client information.
Alphawest has taken reasonable steps to ensure the accuracy and integrity of all its communications, including electronic communications, but accepts no liability for materials transmitted.
Alphawest collects, uses and stores information regarding its customers from time to time in accordance with its privacy policy located on www.alphawest.com.au.