[j-nsp] Redundant SSB

[Sean Crandall]

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of 
> Jonas Frey (Probe Networks)
> Sent: Saturday, May 29, 2004 8:32 AM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Redundant SSB
> 
> Hi,
> 
> i just installed a second SSB-E into a M20 and i am not sure 
> if it works.
> The front LED "offline" is lighted amber.
> With "show chassis env" i only see SSB0, with "show chassis 
> hardware" i see:
> SSB slot 0       REV 01   710-001951   AG7741            Internet
> Processor IIv1
> SSB slot 1       N/A      N/A          N/A               backup
> 
> Does this mean all is fine?

All of our M20's have redundant SSBs and all of them show the exact same
thing.  We have had failures where the backup came on line and took
over, so, yes, this is normal.

> Is there a way to test the second SSB-E without rebooting the whole
box?
> (And without having someone to pull the 1st SSB-E remotely)

You can switch between them by using "request chassis ssb master
switch".  But, if I remember correctly, it is not a hitless failover,
but it is not as long as rebooting the whole chassis.

-Sean

Sean P. Crandall
VP Engineering Operations
MegaPath Networks Inc.
6691 Owens Drive
Pleasanton, CA  94588
(925) 201-2530 (office)
(925) 201-2550 (fax)