Hello misc. On thursay i have upgraded one of our BGP border routers to OpenBSD 5.3, and i was pleased to get the BCM5720 working. I have added it to existing LACP trunk for LAN (2 LACP, 2 ports on WAN 4 on LAN now). There is no problem on this router.
Today, i want to upgrade exactly same model (Dell R320 with PCI Intel CARD and BCM5720 on motherbroad plus PCI BCM5720), and i have some very problematic issues. OpenBSD upgrade works like a charm, but when i use LACP with broadcom cards, after a moment, system totally freeze and nothing responds (on ssh connect but also on the server screen and keyboard). On this router ports must be agregated by 3 (3 for LAN 3 for DMZ), then each trunk have 1 intel port and 2 broadcom ports. I have tried two configuration, same BCM5720 card in the trunk and 1 port from each card. Same problem appears. To finish, i have disabled all ports except working Intel card, but the problem also occurs.... The only solution i have found to get server working is to up bge1 and bge2 and down other interfaces (on the CISCO 2960G switch, ios 12.2(55)SE3), it's the only case when server doesn't freeze. When i do each try and i think it was a success i waited 5 min and problem occurs, or problem occurs when i reboot the machine. Other detail, the working router with BCM 5720 is between an Alcatel 6850 and a CISCO 4507 (Supervisor IV, ios 12.2(54)SG) OpenBSD mustn't freeze totally, i think something is missing on BCM driver or on LACP handling or maybe BCM + LACP + CARP isn't a good idea but i haven't any choice :s Thanks for advance. -- Best regards, Loïc BLOT, Engineering UNIX Systems, Security and Networks http://www.unix-experience.fr
