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it is time to close this blog!

The time has come to move the blog to a new platform. Labnario.com domain will be moved to a new (this time) Joomla template. I am not going to close the old blog. It will still be available on labnario.wordpress.com but there won’t be any activities there. New posts will only be published on the new blog. For this reason labnario.com can be unavailable for the next few days. Sorry for the inconvenience. I hope you will like the new design of labnario blog. See you soon on the new LABNARIO.

routing policy configuration

Some time ago I wrote about local PBR and interface PBR.

It’s time to talk about routing policy, that is a different mechanism. Routing policy is applied to routing information and it is combined with routing protocols to form policies. PBR mechanism is applied to data flows and and packets are forwarded according to the configured policy.

Routing policy is a tool which can be used to filter routes and set route attributes, when importing routing information into OSPF, RIP, ISIS or BGP protocols. BGP can use routing policy to filter advertising routes as well. Routing policy defines which of the routes from the specific routing protocol are allowed to be imported into the target routing protocol. It can be also used to match routes or certain route attributes and to change these attributes when the matching rules are met.

Routing policy command syntax:

route-policy route-policy-name { permit | deny } node node

Continue reading

changes in labnario blog

Regular readers no doubt have noticed that I haven’t posted as ofter as you expected in the past few months. I’ve been pretty busy with the work and home projects. But the last few months is not wasted time. Good news though: a new labnario blog design is almost ready to be open. I am still working on some details. I will inform you and introduce the new labnario blog soon. As you are this blog’s readers, your opinion is very important for me. Please look on the screen today and tell me your opinion. I’am looking forward to receive your feedback.

new design of labnario blog

VPN FRR on Huawei routers

Last time IP FRR on Huawei routers was introduced. Let’s go on with VPN FRR today.

VPN FRR topology

  1. Configure IP addresses based on the topology (omitted)
  2. Configure ISIS on PE1, PE2 and PE3.
  3. Configure MPLS function on all PE routers and enable MPLS LDP to set up an LSP.
  4. Configure VPN instance on all PE devices.
  5. Configure MP-IBGP between PE routers.
  6. Configure EBGP between CE and PE2/PE3 routers.
  7. Configure VPN FRR policy on PE1.
  8. Configure BFD session between PE1 and PE2.

Configure ISIS and MPLS globally and on interfaces (PE1 as an example): Continue reading