2009-02-17 Expert Review Jim Luciani When ar$op.version == 1, the NHRP packet type is listed below. Use of NHRP packet Types in the range 128 to 255 are reserved for research or use in other protocol development and will be administered by IANA as described in Section 9 of . 1 NHRP Resolution Request 2 NHRP Resolution Reply 3 NHRP Registration Request 4 NHRP Registration Reply 5 NHRP Purge Request 6 NHRP Purge Reply 7 NHRP Error Indication 8-127 Unassigned 128-255 Reserved Expert Review Jim Luciani The NHRP extension Type space is subdivided to encourage use outside the IETF. 0x0000 - 0x0FFF Reserved for NHRP. 0x1000 - 0x11FF Allocated to the ATM Forum. 0x1200 - 0x37FF Reserved for the IETF. 0x3800 - 0x3FFF Experimental use. IANA will administer the ranges reserved for the IETF as described in Section 9. Values in the 'Experimental use' range have only local significance. 0 The End of Extensions 1-2 Unassigned 3 Responder Address Extension 4 NHRP Forward Transit NHS Record Ext. 5 NHRP Reverse Transit NHS Record Ext. 7 NHRP Authentication Extension 8 NHRP Vendor-Private Extension 9 Unassigned 10 NHRP Mobile NHC Authentication Ext.