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Date: Sat, 22 May 2010 10:47:54 -0700 From: "George B." <georgeb@...il.com> To: netdev <netdev@...r.kernel.org> Subject: Re: VLANs, bonding redux: vlan state does not follow ethernet On Fri, May 21, 2010 at 11:45 PM, George B. <georgeb@...il.com> wrote: > On Fri, May 21, 2010 at 11:24 PM, George B. <georgeb@...il.com> wrote: >> Using 2.6.34 I am trying to remove bottlenecks. Instead of bonding >> two ethernet interfaces and applying vlans to the bond, I am applying >> the vlans to the ethernet and bonding the vlans creating a separate >> bond interface for each vlan. >> >> The trouble now is that the bond interface does not see when the >> ethernet interface goes down. The vlan reports to the bonding driver >> that it is up when the ethernet it is connected to is down. This >> results in packet loss through the bond interface as the bond driver >> attempts to use that vlan. >> >> eth1 shows having no link: >> >> root@...dbox:/proc/net# ethtool eth1 >> Settings for eth1: >> Supported ports: [ TP ] >> Supported link modes: 10baseT/Half 10baseT/Full >> 100baseT/Half 100baseT/Full >> 1000baseT/Full >> Supports auto-negotiation: Yes >> Advertised link modes: 10baseT/Half 10baseT/Full >> 100baseT/Half 100baseT/Full >> 1000baseT/Full >> Advertised pause frame use: No >> Advertised auto-negotiation: Yes >> Link partner advertised link modes: Not reported >> Link partner advertised pause frame use: No >> Link partner advertised auto-negotiation: No >> Speed: Unknown! >> Duplex: Unknown! (255) >> Port: Twisted Pair >> PHYAD: 1 >> Transceiver: internal >> Auto-negotiation: on >> MDI-X: Unknown >> Supports Wake-on: pumbag >> Wake-on: g >> Current message level: 0x00000001 (1) >> Link detected: no >> >> bonding driver says eth1.99 reports MII status up: >> >> root@...dbox:/proc/net# cat bonding/bond0 >> Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) >> >> Bonding Mode: load balancing (round-robin) >> MII Status: up >> MII Polling Interval (ms): 0 >> Up Delay (ms): 0 >> Down Delay (ms): 0 >> >> Slave Interface: eth0.99 >> MII Status: up >> Link Failure Count: 0 >> Permanent HW addr: 00:26:9e:1c:d3:3e >> >> Slave Interface: eth1.99 >> MII Status: up >> Link Failure Count: 0 >> Permanent HW addr: 00:26:9e:1c:d3:3f >> >> is there some parameter I can give that tells the vlan driver to >> follow the state of the interface it is attached to? Having a vlan >> that reports being up all the time even when its underlying interface >> is down is less than useful. It would seem intuitive that a vlan's >> state would follow that of the interface it is attached to. >> >> root@...dbox:/proc/net# cat vlan/eth0.99 >> eth0.99 VID: 99 REORDER_HDR: 1 dev->priv_flags: 21 >> total frames received 32 >> total bytes received 4735 >> Broadcast/Multicast Rcvd 0 >> >> total frames transmitted 50 >> total bytes transmitted 3852 >> total headroom inc 0 >> total encap on xmit 0 >> Device: eth0 >> INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0 >> EGRESS priority mappings: >> root@...dbox:/proc/net# cat vlan/eth1.99 >> eth1.99 VID: 99 REORDER_HDR: 1 dev->priv_flags: 21 >> total frames received 0 >> total bytes received 0 >> Broadcast/Multicast Rcvd 0 >> >> total frames transmitted 0 >> total bytes transmitted 0 >> total headroom inc 0 >> total encap on xmit 0 >> Device: eth1 >> INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0 >> EGRESS priority mappings: >> >> root@...dbox:/proc/net# ping 10.1.99.1 >> PING 10.1.99.1 (10.1.99.1) 56(84) bytes of data. >> 64 bytes from 10.1.99.1: icmp_seq=2 ttl=255 time=0.299 ms >> 64 bytes from 10.1.99.1: icmp_seq=4 ttl=255 time=0.311 ms >> 64 bytes from 10.1.99.1: icmp_seq=6 ttl=255 time=0.325 ms >> 64 bytes from 10.1.99.1: icmp_seq=8 ttl=255 time=0.291 ms >> 64 bytes from 10.1.99.1: icmp_seq=10 ttl=255 time=0.308 ms >> >> George >> > > But interestingly, mii-tool reports the correct result: > > root@...dbox:/usr/src/linux-source-2.6.34/Documentation/networking# > mii-tool -v eth1.99 > > eth1.99: no link > product info: vendor 00:50:43, model 10 rev 0 > basic mode: autonegotiation enabled > basic status: no link > capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD > advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control > I can't use arp monitor because when I do that it just flips back and forth each second between slaves each monitor period: May 22 10:45:28 sandbox kernel: [69276.450013] bonding: bond0: making interface eth0.99 the new active one. May 22 10:45:29 sandbox kernel: [69277.450010] bonding: bond0: link status definitely up for interface eth1.99. May 22 10:45:30 sandbox kernel: [69278.450009] bonding: bond0: link status definitely down for interface eth0.99, disabl ing it May 22 10:45:30 sandbox kernel: [69278.450012] bonding: bond0: making interface eth1.99 the new active one. May 22 10:45:31 sandbox kernel: [69279.450009] bonding: bond0: link status definitely up for interface eth0.99. May 22 10:45:32 sandbox kernel: [69280.450009] bonding: bond0: link status definitely down for interface eth1.99, disabl ing it May 22 10:45:32 sandbox kernel: [69280.450012] bonding: bond0: making interface eth0.99 the new active one. May 22 10:45:33 sandbox kernel: [69281.450012] bonding: bond0: link status definitely up for interface eth1.99. May 22 10:45:34 sandbox kernel: [69282.450009] bonding: bond0: link status definitely down for interface eth0.99, disabl ing it May 22 10:45:34 sandbox kernel: [69282.450012] bonding: bond0: making interface eth1.99 the new active one. May 22 10:45:35 sandbox kernel: [69283.450012] bonding: bond0: link status definitely up for interface eth0.99. May 22 10:45:36 sandbox kernel: [69284.450009] bonding: bond0: link status definitely down for interface eth1.99, disabl ing it May 22 10:45:36 sandbox kernel: [69284.450012] bonding: bond0: making interface eth0.99 the new active one. May 22 10:45:37 sandbox kernel: [69285.450012] bonding: bond0: link status definitely up for interface eth1.99. May 22 10:45:38 sandbox kernel: [69286.450008] bonding: bond0: link status definitely down for interface eth0.99, disabl ing it May 22 10:45:38 sandbox kernel: [69286.450011] bonding: bond0: making interface eth1.99 the new active one. May 22 10:45:39 sandbox kernel: [69287.450010] bonding: bond0: link status definitely up for interface eth0.99. May 22 10:45:40 sandbox kernel: [69288.450008] bonding: bond0: link status definitely down for interface eth1.99, disabl ing it This is with both physical links up. The arp monitor just causes the links to constantly fail back and forth each arp_monitor interval. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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