What does the NAS-Port mean?

[CaiMuzhang]

Hello!

    See the packet info below:

rad_recv: Access-Request packet from host 168.2.8.28 port 5001, id=142, length=121
 User-Name = "licheng"
 EAP-Message = 0x0201000c016c696368656e67
 Message-Authenticator = 0xb11d9a0d22d86cfb58038fe5832a9f9a
 NAS-IP-Address = 168.2.8.28
 NAS-Identifier = "000fe281c738"
 NAS-Port = 268517377
 NAS-Port-Type = Ethernet
 Service-Type = Framed-User
 Framed-Protocol = PPP
 Calling-Station-Id = "0006-5b28-47aa"

 

    Notice the NAS-Port = 268517377. It should represent the ID of the port, from which the packet is sent. But when I look up the MIB info of the switch, I can't find such an ID of the port. Instead, the base port number is another integer. How can I get this number (say 268517377) by SNMP? Thank you!
 		 	   		  
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