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LACP und Bonding

2012-02-14 @ Bonding, HowTos, LACP, Network

Beispielhafte Ausgabe für LACP gebondete Interfaces

bloeder bondage witz hier einfuegen.

$ ifconfig
bond0     Link encap:Ethernet  HWaddr 00:1e:68:4a:07:3c
          inet addr:10.1.1.50  Bcast:10.1.1.255  Mask:255.255.255.0
          inet6 addr: fe80::21e:68ff:fe4a:73c/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:297092625 errors:0 dropped:0 overruns:0 frame:0
          TX packets:108449744 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:377310521891 (377.3 GB)  TX bytes:7322758046 (7.3 GB)

eth0      Link encap:Ethernet  HWaddr 00:1e:68:4a:07:3c
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:281017381 errors:0 dropped:0 overruns:0 frame:0
          TX packets:108438375 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:373260450833 (373.2 GB)  TX bytes:7321348290 (7.3 GB)
          Memory:fc5e0000-fc600000

eth1      Link encap:Ethernet  HWaddr 00:1e:68:4a:07:3c
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:16075244 errors:0 dropped:0 overruns:0 frame:0
          TX packets:11369 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4050071058 (4.0 GB)  TX bytes:1409756 (1.4 MB)
          Memory:fc5c0000-fc5e0000

Hilfreiche Befehle

$ aptitude install ifenslave
$ ifenslave bond0
The result of SIOCGIFFLAGS on bond0 is 1443.
The result of SIOCGIFADDR is 00.00.0a.01.
The result of SIOCGIFHWADDR is type 1  00:1e:68:4a:07:3c.

Status abfragen eines Bonding Interfaces

$ cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008)

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: 3
        Number of ports: 2
        Actor Key: 17
        Partner Key: 14
        Partner Mac Address: 78:fe:3d:41:b5:00

Slave Interface: eth0
MII Status: up
Link Failure Count: 1
Permanent HW addr: 00:1e:68:4a:07:3c
Aggregator ID: 3

Slave Interface: eth1
MII Status: up
Link Failure Count: 1
Permanent HW addr: 00:1e:68:4a:07:3d
Aggregator ID: 3

Informationen zum genutzten Kernel Modul Bonding

$ modinfo bonding
filename:
/lib/modules/2.6.32-27-server/kernel/drivers/net/bonding/bonding.ko
author:         Thomas Davis, tadavis@lbl.gov and many others
description:    Ethernet Channel Bonding Driver, v3.5.0
version:        3.5.0
license:        GPL
srcversion:     E5E5261A12E39B584F85F66
depends:
vermagic:       2.6.32-27-server SMP mod_unload modversions
parm:           max_bonds:Max number of bonded devices (int)
parm:           num_grat_arp:Number of gratuitous ARP packets to send on
failover event (int)
parm:           num_unsol_na:Number of unsolicited IPv6 Neighbor Advertisements
packets to send on failover event (int)
parm:           miimon:Link check interval in milliseconds (int)
parm:           updelay:Delay before considering link up, in milliseconds (int)
parm:           downdelay:Delay before considering link down, in milliseconds
(int)
parm:           use_carrier:Use netif_carrier_ok (vs MII ioctls) in miimon; 0
for off, 1 for on (default) (int)
parm:           mode:Mode of operation : 0 for balance-rr, 1 for active-backup,
2 for balance-xor, 3 for broadcast, 4 for 802.3ad, 5 for balance-tlb, 6 for
balance-alb (charp)
parm:           primary:Primary network device to use (charp)
parm:           lacp_rate:LACPDU tx rate to request from 802.3ad partner
(slow/fast) (charp)
parm:           ad_select:803.ad aggregation selection logic: stable (0,
default), bandwidth (1), count (2) (charp)
parm:           xmit_hash_policy:XOR hashing method: 0 for layer 2 (default), 1
for layer 3+4 (charp)
parm:           arp_interval:arp interval in milliseconds (int)
parm:           arp_ip_target:arp targets in n.n.n.n form (array of charp)
parm:           arp_validate:validate src/dst of ARP probes: none (default),
active, backup or all (charp)
parm:           fail_over_mac:For active-backup, do not set all slaves to the
same MAC.  none (default), active or follow (charp)

Starten des bonding modules mit xmit_hash_policy

fuer layer 3+4 hash map

$ rmmod bonding
$ modprobe bonding xmit_hash_policy=1

Wichtig ist der Mode des Modules Bonding

weil hier nur der Modus 4 der ist, der LACP macht (802.3ad)

$ dmesg
[530622.396615] bonding: bond0: enslaving eth1 as a backup interface with a down
link.
[530622.397442] bonding: bond0: setting mode to 802.3ad (4).
[530622.397479] bonding: bond0: Setting MII monitoring interval to 100.

Ein Beispiel mit iperf und aktiviertem layer3+4 xmit_hash_policy

$ modinfo bonding
xmit_hash_policy:XOR hashing method: 0 for layer 2 (default), 1 for layer 3+4
(charp)


$ rmmod bonding
$ modprobe bonding xmit_hash_policy=1

## iperf -c 10.1.1.50 -n 1000M -P 6
------------------------------------------------------------
Client connecting to 10.1.1.50, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  8] local 10.1.1.12 port 44541 connected with 10.1.1.50 port 5001
[  4] local 10.1.1.12 port 44536 connected with 10.1.1.50 port 5001
[  3] local 10.1.1.12 port 44537 connected with 10.1.1.50 port 5001
[  5] local 10.1.1.12 port 44538 connected with 10.1.1.50 port 5001
[  6] local 10.1.1.12 port 44539 connected with 10.1.1.50 port 5001
[  7] local 10.1.1.12 port 44540 connected with 10.1.1.50 port 5001
[ ID] Interval       Transfer     Bandwidth
[  7]  0.0-26.2 sec  1000 MBytes   321 Mbits/sec
[  6]  0.0-26.5 sec  1000 MBytes   317 Mbits/sec
[  4]  0.0-26.5 sec  1000 MBytes   317 Mbits/sec
[  8]  0.0-26.6 sec  1000 MBytes   315 Mbits/sec
[  5]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[  3]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[SUM]  0.0-26.7 sec  5.86 GBytes  1.88 Gbits/sec


## iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[  4] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36476
[  5] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36478
[  6] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36479
[  7] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36480
[  8] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36477
[  9] local 10.1.1.12 port 5001 connected with 10.1.1.50 port 36481
[ ID] Interval       Transfer     Bandwidth
[  6]  0.0-26.6 sec  1000 MBytes   315 Mbits/sec
[  4]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[  8]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[  5]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[  7]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[  9]  0.0-26.7 sec  1000 MBytes   314 Mbits/sec
[SUM]  0.0-26.7 sec  5.86 GBytes  1.88 Gbits/sec

Beispiel Konfiguration für bonding in /etc/network/interfaces

## LACP
auto bond0
iface bond0 inet static
        address 10.1.1.12
        network 10.1.1.0
        netmask 255.255.255.0
        broadcast 10.1.1.255
        gateway 10.1.1.3
        dns-nameservers 10.1.1.1
        dns-search gd
        slaves eth0 eth1
        bond-mode 4
        bond-miimon 100
        xmit_hash_policy 1

## MGMT
auto eth3
iface eth3 inet static
        address 192.168.15.201
        netmask 255.255.255.0