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Nikolay Abromov wrote: | Hello List, | | I have two (bgp) uplink providers which is located on different routers | in local segment and i'm wondering is there any method to make backup of | my customers with advertise-maps with this topology? | | scheme: | | (uplink) (uplink) | | | | [router A] --- [router B] | |

Assuming you mean to only advertise your customer's route via router B to provider #2 only if the connection via router a to ISP #1 fails, then yes you can. That is called conditional BGP advertisement. See

http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a00800949e8.shtml#fifteen

and

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a0080094309.shtml

for more info.

Of course, the other provider must allow you to advertise the customer's route so verify that they have their filters set properly.

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