We are using bnx2 driver. We are getting outages when arp table fills up and unless we flush the table, network connectivity is an issue. more ifcfg-bond0 DEVICE=bond0 BONDING_OPTS="mode=1 miimon=500 primary=eth4" Thanks Brian --- On Tue, 7/12/11, Georgios Magklaras <georgios@xxxxxxxxxxxxx> wrote: > From: Georgios Magklaras <georgios@xxxxxxxxxxxxx> > Subject: Re: Arp Cache issue > To: "General Red Hat Linux discussion list" <redhat-list@xxxxxxxxxx> > Date: Tuesday, July 12, 2011, 9:41 PM > On 07/12/2011 09:46 PM, brian irvin > wrote: > > We have a RHEL 5 box which requires frequent flushing > of arp cache to stay up and running and not create network > bottlenecks. Anyone have these issues? we have quite a few > servers and have never faced an issue before this one. I > thought it might have to do with the switch but the network > folks say the switch is clear. Any thoughts?? > > > > cat /proc/net/bonding/bond0 > > Ethernet Channel Bonding Driver: v3.4.0 (October 7, > 2008) > > > > Bonding Mode: fault-tolerance (active-backup) > > Primary Slave: eth4 > > Currently Active Slave: eth4 > > MII Status: up > > MII Polling Interval (ms): 500 > > Up Delay (ms): 0 > > Down Delay (ms): 0 > > > > Slave Interface: eth0 > > MII Status: up > > Link Failure Count: 0 > > Permanent HW addr: 00:37:c9:38:e3:3b > > > > Slave Interface: eth4 > > MII Status: up > > Link Failure Count: 0 > > Permanent HW addr: 00:11:17:4c:ee:22 > > > > > > Thanks > > > > Brian. > > > > Can you clarify a bit the staying up and running/bottleneck > issue? What happens if you do not flush the ARP table in > terms of what you see in the system and what do you see on > the LAN side for the system? Also which Ethernet driver > module you use in the system? > > I have seen issues with IP aliasing (not HA bonding) on > very busy LANs, but long time ago, not on recent 5 releases. > As far as I know, unless you use a load balancing mode > bonding, the netwrk switch should not be tweaked. > > > GM > > -- -- George Magklaras PhD > RHCE no: 805008309135525 > > Senior Systems Engineer/IT Manager > Biotek Center, University of Oslo > EMBnet TMPC Chair > > http://folk.uio.no/georgios > > Tel: +47 22840535 > > -- redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
