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Occasional Contributor
Posts: 17
Registered: ‎03-29-2011

DS5100b lots of er_bad_os and still increasing

HI All , I believe this has been answered previously but i am still not able to fix it at my end.

We got Brocade B5100  and we have Tape library . All the tape drive ports supports 8G and my other device which communicated with them are 4G.

I see tons of er_bad_os on all tape library ports and other ports as well. As per emc primus emc228910 its issue with 8G devices and then given below solution. I applied it . All were looking good for some time but after few days i am encountering same errors again.

Our backup running slow , i believe this is causing it.

I applied another workaround . As this is issue with 8G devices , i set all 8G drive ports to 4G (using portcfgspeed). Again all were looking good for some time but again same issue

Any help appreciated. I logged a case with EMC but they gave me same primus.

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Issue portcfgfillword command against port where 8Gb device is to be attached.

In FOS 6.3.1 and above there are now the following options when using the portcfgfillword CLI command:

0 | -idle-idle Sets IDLE mode in the Link Init and IDLE as the fill word (default).

1 | -arbff-arbff Sets ARB(ff) in the Link Init and ARB(ff) as the fill word.

2 | -idlef-arbff Sets IDLE mode in the Link Init and ARB(ff) as the fill word.

3 | -aa-then-ia Attempts hardware arbff-arbff (mode 1) first. If the attempt fails to go into active state, this command executes software idle-arb (mode 2). Mode 3 is the preferable to modes 1 and 2 as it captures more cases..

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I used Mode 3 with portcfgfillword command . My FOS is 6.3.1a

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: DS5100b lots of er_bad_os and still increasing

were you able to fix this?

did you try to replace the sfp/cable or move the fiber to a different port?

Occasional Contributor
Posts: 17
Registered: ‎03-29-2011

Re: DS5100b lots of er_bad_os and still increasing

I would like to close this but yes there still no fix but my backup is not getting affected.

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