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Don Slice, CCIE No. 1929, is an Escalation Engineer at Research Triangle Park, N.C., and was formerly a Senior Engineer on the Routing Protocols Team at RTP TAC. He is an acknowledged expert in EIGRP, OSPF, and general IP routing issues. He is also well known for his knowledge of DECnet, CLNS/ISIS, DNS, among other things. Don provides escalation support to Cisco engineers worldwide.