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[多选题]
在中低端路由器配置PPP的时候,执行DEBUGPPPPACKET命令,显示如下:Serial0PPPOLCP(c021)Pkt,Len33Statestarting,codeConfReq(01),id15,len29MRU(1),len4,val05dcAuthProto(3),len4,PAPc023MagicNumber(5),len6,val0003a715MRRU(11),len4,val05dcDiscri(13),len7,val0434ab54d0以上哪些协商参数是MP特有的?()
A.MRU(1)
B.AuthProto(3)
C.MRRU(11)
D.Discri(13)
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![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)