BGP/Multihoming

["Michael R. Poyaoan" <mrp () skyinet net>]

The diagram below describes our current set-up:

* We have two default routes via BGP with MCI (L1 and L2) for outgoing
  traffic.
* The two MCI links are configured to load share incoming traffic thru the
  use of MEDs.

                                    AS701
                                 +--------+
                                 |  UUNet |
                                 +--------+
                                      |
              AS3561                  |
            +-------+            +--------+
            |  MCI  |            |   UNA  | AS10275
            +-------+            +--------+
              |  |                    |
              |  |                    |
              |  |                    |
            L1|  |L2                L3|
              |  |      AS6648        |
              |  |   +----------+     |
              |  +---|          |     |
              |      |    Sky   |-----+
              +------|          |
                     +----------+

Questions:

1.  How can I use the third link for default routes?  Is static routing
    the only solution?

2.  Is it possible to load-share outgoing traffic between two different
    ASN's?  How?

3.  How can I unclude the third link for load-sharing incoming traffic?

Please reply privately.

Thanks,
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Michael R. Poyaoan                        email:  mrp () skyinet net
Network Operations Center                 voice:  +63 2 411-2005
Sky Internet, Inc.                          fax:  +63 2 411-2003
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