09-27-2017 06:44 AM - edited 03-05-2019 09:12 AM
Hi We know RT in MPLS controls network traffic. Can we say as long as two RT in two PE are same(import/export), the customer behind the PE can reach each other? Do we still need other condition? Thank you.
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09-27-2017 04:30 PM
Yes, that is correct. As long as the exported RT extended community on the sending PE is matched by the import RT value on the receiving PE, the information is imported on this same PE. The export value on both PE does not need to match. Neither does the import value.
Regards,
09-27-2017 05:05 PM - edited 09-27-2017 05:08 PM
Hi
As Harold mentioned, You can have the same RT (export/import) on each PE or the export can be different, The condition is that they should be over the same VRF.
For example:
PE01
ip vrf A
route-target export 1:100
route-target import 2:200
PE02
ip vrf A
route-target export 2:200
route-target import 1:100
Both PE's are exporting through differents export communities but they are importing the community from each other. You could use the same RT communities (import/export) on both sides to keep an order.
PE01
ip vrf A
route-target export 1:100
route-target import 1:100
PE02
ip vrf A
route-target export 1:100
route-target import 1:100
:-)
09-27-2017 04:30 PM
Yes, that is correct. As long as the exported RT extended community on the sending PE is matched by the import RT value on the receiving PE, the information is imported on this same PE. The export value on both PE does not need to match. Neither does the import value.
Regards,
09-27-2017 05:05 PM - edited 09-27-2017 05:08 PM
Hi
As Harold mentioned, You can have the same RT (export/import) on each PE or the export can be different, The condition is that they should be over the same VRF.
For example:
PE01
ip vrf A
route-target export 1:100
route-target import 2:200
PE02
ip vrf A
route-target export 2:200
route-target import 1:100
Both PE's are exporting through differents export communities but they are importing the community from each other. You could use the same RT communities (import/export) on both sides to keep an order.
PE01
ip vrf A
route-target export 1:100
route-target import 1:100
PE02
ip vrf A
route-target export 1:100
route-target import 1:100
:-)
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