I wanted to ask a question about the diagram I have included. We are bringing up 2 MPLS WAN connections and would like some specifics on the best design. We are using BGP to the providers. From there we have big questions. We can run BGP internal and are licensed to do so on the N5K's. The N5Ks are currently using HSRP for inside LAN clients as default gateway. We want to load balance and provide redundant routes using a dynamic approach. Should we use BGP internal utilizing the connections between the routers? Should we use HSRP on the routers? How best to get the routes to the N5K and should we be considering this?
is it active/standby redundancy or loadbalncing the traffic over both CE/MPLS links
if you are using HSRP in the N5K do you have L2 switches connected to the N5K ? are they muti-homed each to both N5K ? if the answer is yes then you could use vPC in the N5K to cluster both N5K as one virtual switch from forwarding point of view and have all your uplinks in forwarding state ( enable RSTP as fallback method )
if you want to load balance from the N5K to the MPLS links you need to add additional link from each N5K to the CEs
then use iBGP or IGP such as ospf between the CEs and N5Ks then use equal cost multi pathing for th eloadbalcing ECMP from N5K to the CEs
if you want active standby, you still need to add additional link between the N5K and CEs if you are going to use vPC
use IGP or iBGP from the CE to N5K and use some routing metric to make the prefered path
please be aware that you need to alige the BGP policies with MPLS SP to make sure inbound and outbound is not gonna be asymitrical
We do not see any benefit to vpc. We also do not want additional links between N5K and CE routers. We want there to be load balance between the 2 circuits and allow us to specify which traffic has preference to one provider link more than the other. I would like to keep the direct link between routers and think this can be used as the load balance link and in the even an N5K goes down. I would like to get specifics as to how the config will start to look. Ebgp with one provider is AS x and the other provider is AS y. How do I build my bgp out from the N5K? Bgp between the N5K? Bgp between N5K and upstream CE router? Bgp between CE routers? Really not sure where to start.
Want to go BGP end to end. I believe this to be the most elegant solution. It is true that I am not experienced with bgp but there is no time like now to learn. Especially since I have the perfect testing scenario in a non production mode.
Is it easier to ask a provider to change AS numbers? Should I try to get both providers on the same AS? Will this simplify things?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.