An IGP is running between D-SW1 and D-SW2. They both advertise the Routes 10.0.0.0/24 and 22.214.171.124/24 to each other. However, since these are also their CONNECTED ROUTES, therefore, because of lower AD, both switches prefer the Connected Routes.
Now suppose that the Layer 2 Trunk between A-SW2 and D-SW2 goes down.
A host X, connected to A-SW2 in VLAN 10 wants to send some data to another host Y connected to same switch SW-2 in VLAN 20.
Therefore, X sends it’s data to D-SW1. However, D-SW1 has the route 126.96.36.199/24 as Connected, so that it does not send these packets to D-SW2 and thus the packets are dropped.
My question is that is this a recommended arrangement? i.e, should we use extended VLANs, i.e, VLANs configured on different switches while we are using MLS for interVLAN routing?
Another question is that what can we do to make this arrangement to work? A solutions coming into my mind is to Use Layer 2 Trunk between D-SW1 and D-SW2. However, as per CCNP Book, it is not recommended to use Layer 2 Links between Distribution Layer Switches to limit Broadcasts.
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.