prevent DDOS in low speed link

[xwang2]

Hi all:

Should we configure some Qos feature in a low speed serial link to prioritize the ospf routing packet in a low speed FR link in case of under DDOS attack. If could , how could we do the configure ?

Thanks

[Nairi Adamian]

For prioritizing routing update on FR network, one way I can think of is setting the discard Eligible bit on all traffic except routing update.

http://www.cisco.com/warp/customer/105/config_fr_pvc.html

Hope this helps,

-Nairi

[xwang2]

Thanks,Nairi:

I will try this in real network and give you result later.