i am new to MPLS can someone help me out plz i need to understand VRF.....i have just joined a new office and all over its VRF an di have no clue abt that though i have ccnp on me but this thing is v new to me......cheers and thanks in advance
When you make a VRF you have to router essentially. The global route table, (your normal show ip route) and then the VRF route table (show ip vrf xxx) The two do not talk to each other unless you redistribute them into one another.
Any interfaces you put into a VRF disapear from the global route table and are now only active and reachable from the VRF route instance. Anytime you want to reach those interface you have to put your commands in a VRF (ping vrf xxx ip a.b.c.d...
That's right. VRF is quite secure where you can do customers' VPNs separation in multiple VRFs.
You can imagine, you can assign 1 VRF to cust A and another VRF to cust B and they don't talk to each other. If there's requirement for cust A to communicate with cust B, you can always extranet between the 2 VRFs via the Route target import export.
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