| Title: | FDDI - The Next Generation |
| Moderator: | NETCAD::STEFANI |
| Created: | Thu Apr 27 1989 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2259 |
| Total number of notes: | 8590 |
Can someone please clear something up that has been bugging me lately.
If an IP packet is circumnavigating the ring and destined for a node
off of a DECbridge 500, what happens to the packet if it has the 'dont
fragment' bit set in the header. Does the bridge ignore the bit and
fragment anyway or does the packet get stripped and junked or what??
Thanx in advance for any replies.
Stuart
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 170.1 | KONING::KONING | NI1D @FN42eq | Fri Nov 09 1990 16:04 | 6 | |
Fragmenting anyway would be a protocol violation and should be considered data corruption. The bridge does the right thing: it looks at the bit and does as it's told. paul | |||||
| 170.2 | IP Trailer Protocol | BERN01::DEY | Walter Dey, EIS, Berne Switzerland | Mon Nov 19 1990 03:23 | 1 |
What about IP trailer protocols ? How will the bridge act on them ? | |||||
| 170.3 | KONING::KONING | NI1D @FN42eq | Mon Nov 19 1990 13:10 | 10 | |
It will pass them right through without processing. Note that RFC 1103 specifically says that trailer protocol shall not be used by FDDI nodes. (Support for trailers has always been optional and is negotiated at connection setup; if either side doesn't like it, it isn't used.) Because of that rule, the only possible trailer frames on the FDDI are those that originated on an Ethernet. Clearly those will fit on an Ethernet, so the segmentation function doesn't need to worry about them. paul | |||||