On Sat, Nov 12, 2011 at 01:49:40PM +1100, James Gray wrote:
> On 12/11/2011, at 3:58 AM, Albert Chin wrote:
>
> > I'm running 11.10 on an Intel SR2625URLXR system with an Intel S5520UR
> > motherboard and an Intel E1G42ET Dual Port Server Adapter. I'm getting
> > dropped packets on a bonded interface:
> >
> > $ ifconfig -a
> > ...
> > bond0 Link encap:Ethernet HWaddr 00:1b:21:b7:21:ea
> > BROADCAST PROMISC MASTER MULTICAST MTU:1500 Metric:1
> > RX packets:2472 errors:0 dropped:2472 overruns:0 frame:0
> > TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
> > collisions:0 txqueuelen:0
> > RX bytes:306528 (306.5 KB) TX bytes:272 (272.0 B)
>
> --- >8 --- Snipped
>
> > $ cat /etc/network/interfaces
> > ...
> > auto bond0
> > iface bond0 inet manual
> > bond-slaves none
> > bond_mode 802.3ad
> > bond_miimon 100
> >
> > auto eth2
> > iface eth2 inet manual
> > bond-master bond0
> >
> > auto eth3
> > iface eth3 inet manual
> > bond-master bond0
> >
> > 2. Why isn't the bond0 interface "up"?
>
> The dropped packets on bond0 are probably control packets the kernel
> is ignoring because you haven't enslaved any interfaces. Which
> leads to question 2. Try modifying the "iface bond0" stanza in
> /etc/network/interfaces:
>
> auto bond0
> iface bond0 inet manual
> bond-slaves eth2 eth3 # No slaves == nothing for bond0 to bind to!
> bond_mode 802.3ad
> bond_miimon 100
>
> You might want to add an "updelay" in there too if your interfaces
> take a little while to synchronise with the switch (easy for the
> switch to block the port until spanning tree has done its thing
> unless you've specify "portfast" on the switch port). Then bounce
> the network and see what happens. When it's all running properly,
> you should see something like this:
Thanks. I tried that but it didn't work. I updated bond0 in
/etc/network/interfaces to:
auto bond0
iface bond0 inet static
address 10.191.62.2
netmask 255.255.255.0
broadcast 10.191.62.255
bond-slaves eth2 eth3
bond-primary eth2 eth3
bond-mode 802.3ad
bond-lacp_rate fast
bond-miimon 100
When I boot with this, I get:
# ifconfig -a
bond0 Link encap:Ethernet HWaddr 00:1b:21:b7:21:ea
inet addr:10.191.62.2 Bcast:10.191.62.255 Mask:255.255.255.0
inet6 addr: fe80::21b:21ff:feb7:21ea/64 Scope:Link
UP BROADCAST MASTER MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
eth2 Link encap:Ethernet HWaddr 00:1b:21:b7:21:ea
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Memory:b2420000-b2440000
eth3 Link encap:Ethernet HWaddr 00:1b:21:b7:21:ea
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Memory:b2400000-b2420000
# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: down
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
802.3ad info
LACP rate: fast
Aggregator selection policy (ad_select): stable
bond bond0 has no active aggregator
Slave Interface: eth2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:1b:21:b7:21:ea
Aggregator ID: N/A
Slave queue ID: 0
Slave Interface: eth3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:1b:21:b7:21:eb
Aggregator ID: N/A
Slave queue ID: 0
What's odd is that after the system comes up with the above config, if
I do the following:
# ip link set dev bond0 up
# ifenslave bond0 eth2 eth3
# ifconfig bond0 10.191.62.2 netmask 255.255.255.0
# ifconfig bond0
bond0 Link encap:Ethernet HWaddr 00:1b:21:b7:21:ea
inet addr:10.191.62.2 Bcast:10.191.62.255 Mask:255.255.255.0
inet6 addr: fe80::21b:21ff:feb7:21ea/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:17 errors:0 dropped:17 overruns:0 frame:0
TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2108 (2.1 KB) TX bytes:3126 (3.1 KB)
# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
802.3ad info
LACP rate: fast
Aggregator selection policy (ad_select): stable
Active Aggregator Info:
Aggregator ID: 1
Number of ports: 2
Actor Key: 17
Partner Key: 24
Partner Mac Address: 00:04:96:18:54:d5
Slave Interface: eth2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:1b:21:b7:21:ea
Aggregator ID: 1
Slave queue ID: 0
Slave Interface: eth3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:1b:21:b7:21:eb
Aggregator ID: 1
Slave queue ID: 0
So it seems something odd is going on. Notice that I continue to get
dropped packets after this "working" config.
> Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)
>
> Bonding Mode: IEEE 802.3ad Dynamic link aggregation
> Transmit Hash Policy: layer2 (0)
> MII Status: up
> MII Polling Interval (ms): 100
> Up Delay (ms): 0
> Down Delay (ms): 0
>
> 802.3ad info
> LACP rate: slow
> Aggregator selection policy (ad_select): stable
> Active Aggregator Info:
> Aggregator ID: 1
> Number of ports: 2
> Actor Key: 17
> Partner Key: 53
> Partner Mac Address: 74:ea:3a:ba:35:e4
>
> Slave Interface: eth0
> MII Status: up
> Link Failure Count: 0
> Permanent HW addr: 00:08:9b:c4:a6:f4
> Aggregator ID: 1
>
> Slave Interface: eth1
> MII Status: up
> Link Failure Count: 0
> Permanent HW addr: 00:08:9b:c4:a6:f5
> Aggregator ID: 1
>
>
> As always, there's some documentation to read:
> https://help.ubuntu.com/community/UbuntuBonding
Your output above looks different than the "Check operation" section
of https://help.ubuntu.com/community/UbuntuBonding.
--
albert chin (ch...@thewrittenword.com)
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