this is a special exam for Cisco partners. To maintain partnership status the rules have changed slightly to be an enhanced routing and switching speciliast you need a certain number of people holding this specialization aswell as the usual CCNA/CCNP/CCIEs on staff.
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http://www.cisco.com/web/partners/pr11/index.html
If you work for a Cisco partner then this may be the exam for you and it enhances your prestige and esures they keep their status.