In GNS3 Where is the DCE and DTE

I am experiencing a problem of frame relay interface being down in GNS3.
I do not know where is the DCE and where is the DTE
How can one tell?

Find more posts tagged with

Save $250 on 2025 certification boot camps from Infosec!

Book now with code EOY2025

Button

Comments

late_collision

There are a few ways to set up Frame Relay in GNS3, but the DCE would be the frame relay switch end.

I dont set up Frame Relay often enough in GNS3 to have it memorized, I typically just google "GNS3 Frame Relay" and find the answer pretty quick.

I believe GNS3 has a built in Frame Switch, but I always use a router as the frame switch.

Mooseboost

Are you using a the frame relay switch built-in or using a router? As far as seeing which connection sees itself as what - you can use show controller.

davenull

IIRC, this is one of those cases where GNS3 doesn't work the same as physical hardware. It's going to have either both sides DTE or both sides DCE, I can't remember which one, it's been a while.

ph4ntom74

you can choose which link is the DTE/DCE and specify clock rates accordingly but keep in mind that this feature does not work on GNS3, i mean, it works because you can configure it but it doesnt really work as its supposed to.

ph4ntom74

btw, how can you not see which one is which?
try checking interface values/frame relay dlci/lmi ???

dppagc wrote: »

I am experiencing a problem of frame relay interface being down in GNS3.
I do not know where is the DCE and where is the DTE
How can one tell?

Simrid

You can use the frame-relay input-intf dce command on the switch end to set it to be DCE. In terms of what finding which switch is using what end, a simple show interface serial x should work.

GNS3 is a strange one as it will treat both ends at DCE I believe.

ph4ntom74

maybe this will help: https://mega.nz/#!cdYjSYKK!kViekW7Nt9vbkQG-oaVVd--9u82C6xGNX4PtD_wDqRI