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Sh Frame-relay map

Serial0/0 (up): ip 192.168.1.4 dlci 104(0x68,0x1880), dynamic,

broadcast,, status defined, active

what are those hex values in this statement.

4 REPLIES

Re: Sh Frame-relay map

The dlci is 104:

0x68 in hex = 104 in decimal

0x1880 is its value as it would appear on the wire

So show frame map shows the dlci in 3 ways: decimal, hex, and how it looks on the wire.

Steve

Re: Sh Frame-relay map

Hi Steve,

can you elaborate "it would appear on the wire" - 0x1880.

Thanks.

Re: Sh Frame-relay map

If I am not mistaken it has to do with the format of a frame packet. The dlci is a 10-bit routing address consisting of noncontiguous "most sign. bits" (msb - 6 bits) and "least sign. bits" (lsb - 4 bits), separated by a command/response (c/r) bit and a extended address bit (ea). The EA bit allows for a dlci longer than 10 bits (increases the number of possible addresses). All of those bits form the second hex number and represent what would been seen with a packet sniffer (ie "as would appear on the wire").

Hope that explaination is a little better.

Steve

Re: Sh Frame-relay map

Yep...i will try to sniff with an agilent and get back.....

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