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Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

8933.0. "de500-aa ring full" by CSC32::PITT () Sun Feb 23 1997 23:05

    
    
    4.0b  on a 2100. 
    de500-aa at 10mb - not on a token ring - connected to cisco hub. 
    
    Customer is getting errors on startup:
    
    tu0: transmit ring inconsistent
    tu0: can't issue setup frame. Ring full
    
    Can anyone tell me what this is referring to?
    
    He is running the same configuration on another 2100 without any 
    problems. He has swapped out this device, tried new cables, cisco port.
    
    ...ideas?
    
    thanks

T.R	Title	User	Personal Name	Date	Lines
8933.1		netrix.lkg.dec.com::thomas	The Code Warrior	`Mon Feb 24 1997 08:12`	9
	Most network adapter have rings of buffer descriptors that are used by the host to supply buffers to the device. To setup the 21x4x devices, you need to transmit a setup frame. Normally this isn't a problem but if your ring is full... Why would your ring be full? is the user supplying more packet than the media can support? Is there a DMA problem on the 2100 that is causing slower than usual transmits?
8933.2		SMURF::GILLUM	Kirt Gillum	`Mon Feb 24 1997 14:48`	4
	Sounds like transmits aren't moving out of the adapter. What console mode do you have the adapter set at (twisted pair, fastfd, fast, etc.)?
8933.3	twisted. very twisted.	CSC32::PITT		`Thu Feb 27 1997 14:54`	12
	This is setup for twisted pair. uerf -R does show 10Bt. Halfduplex. It's a 21140-aa. He's tried a different board on this system with the same results. He's upgraded to 4.1b dunix. He has a second system identically configured, hdwe and all, that is working fine. I'm not sure how to procede with this one. Suggestions? thanks!
8933.4		CSC32::PITT		`Thu Feb 27 1997 14:56`	3
	he also said he'd tried a de500-xa with the same results.
8933.5		SMURF::GILLUM	Kirt Gillum	`Thu Feb 27 1997 15:40`	12
	Is the switch configured to accept regular 10Mbit traffic? Or does it want to be full duplex? From the sound of things, no traffic is flowing out of the adapter. Is that true (can they successfully ping anything?)? If no traffic is going out, I would suspect that this problem would be due to a lack of a physical connection (cable, repeater type of connection). I know of no reason why a 2100 would be different than anything else (I'm running a 2100 with a DE500-AA on it).
8933.6		CSC32::PITT		`Sun Mar 02 1997 22:39`	9
	there is a physical connection... the cisco is half duplex, 10 mb. The error IMPLIES that some type of buffer on the system is full. There is NOTHING going in or out of the controller. It isn't coming up at all.
8933.7		SMURF::GILLUM	Kirt Gillum	`Mon Mar 03 1997 15:46`	8
	The device rings are full. That doesn't implicate any system resource shortage. Still sounds like a physical connection problem. Check to make sure that the cable is correct (straight, crossover). If it's a DEC cable, get the part number and look it up (to make sure it's right).
8933.8		CSC32::PITT		`Wed Mar 05 1997 13:28`	8
	Customer has moved cables from a working system to this not working system. I'm just going to have field service go back out on site to work the issue. thanks.