Lines Matching +full:monitor +full:- +full:interval +full:- +full:ms
1 .. SPDX-License-Identifier: GPL-2.0
11 Corrections, HA extensions: 2000/10/03-15:
13 - Willy Tarreau <willy at meta-x.org>
14 - Constantine Gavrilov <const-g at xpert.com>
15 - Chad N. Tindel <ctindel at ieee dot org>
16 - Janice Girouard <girouard at us dot ibm dot com>
17 - Jay Vosburgh <fubar at us dot ibm dot com>
22 - Mitch Williams <mitch.a.williams at intel.com>
35 the original tools from extreme-linux and beowulf sites will not work
70 7.1 ARP Monitor Operation
72 7.3 MII Monitor Operation
119 -----------------------------------------------
135 ---------------------------
148 ``/etc/modprobe.d/*.conf`` configuration files, or in a distro-specific
156 configuring a bond, it is recommended "tail -f /var/log/messages" be
173 (active-backup, balance-alb and balance-tlb). Possible values
190 is 1 - 65535. If the value is not specified, it takes 65535 as the
198 In an AD system, this specifies the mac-address for the actor in
200 address. If the all-zeroes MAC is specified, bonding will internally
202 local-admin bit set for this mac but driver does not enforce it. If
230 - A slave is added to or removed from the bond
232 - Any slave's link state changes
234 - Any slave's 802.3ad association state changes
236 - The bond's administrative state changes to up
253 In an AD system, the port-key has three parts as shown below -
259 01-05 Speed
260 06-15 User-defined
264 from 0 - 1023. If not given, the system defaults to 0.
285 The ARP monitor works by periodically checking the slave
331 non-ARP traffic should be filtered (disregarded) for link
369 Enabling validation causes the ARP monitor to examine the incoming
392 ARP monitor into considering the links as still up. Use of
393 validation can resolve this, as the ARP monitor will only consider
399 Enabling filtering causes the ARP monitor to only use incoming ARP
411 ARP monitor into considering the links as still up. Use of
420 in order for the ARP monitor to consider a slave as being up.
421 This option affects only active-backup mode for slaves with
438 Specifies the number of arp_interval monitor checks that must
439 fail in order for an interface to be marked down by the ARP monitor.
442 are permitted an extra monitor check (i.e., they must fail
445 The default value is 2, and the allowable range is 1 - 255.
453 IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled control
463 is only valid for the miimon link monitor. The downdelay
470 Specifies whether active-backup mode should set all slaves to
480 bonding to set all slaves of an active-backup bond to
495 interferes with the ARP monitor).
507 monitor, devices which assert link up prior to being
587 asserting carrier. It is similar to the Cisco EtherChannel min-links
589 must be up (link-up state) before marking the bond device as up
604 balance-rr (round robin). Possible values are:
606 balance-rr or 0
608 Round-robin policy: Transmit packets in sequential
613 active-backup or 1
615 Active-backup policy: Only one slave in the bond is
622 occurs in active-backup mode, bonding will issue one
634 balance-xor or 2
662 regards to the packet mis-ordering requirements of
678 balance-tlb or 5
700 balance-alb or 6
702 Adaptive load balancing: includes balance-tlb plus
730 and when an inactive slave is re-activated. The
765 bonding device and each VLAN sub-device. This is repeated at
769 The valid range is 0 - 255; the default value is 1. These options
770 affect only the active-backup mode. These options were added for
783 The valid range is 0 - 65535; the default value is 1. This option
784 has effect only in balance-rr mode.
791 This delay should be a multiple of the MII link monitor interval
794 The valid range is 0 - 300000. The default value is 0, which means
795 to match the value of the MII link monitor interval.
803 for active-backup(1), balance-tlb (5) and balance-alb (6) mode.
813 off-line will alternate devices be used. This is useful when
817 The primary option is only valid for active-backup(1),
818 balance-tlb (5) and balance-alb (6) mode.
825 occurs. This option is designed to prevent flip-flopping between
866 slaves based on the load in that interval. This gives nice lb
867 characteristics but can cause packet reordering. If re-ordering is
870 xmit-hash-policy can be used to select the appropriate hashing for
886 only valid for the miimon link monitor. The updelay value
915 balance-xor, 802.3ad, and tlb modes. Possible values are:
948 network peer on the same slave. For non-IP traffic,
981 information is omitted. For non-IP traffic, the
1018 hash to load-balance traffic per-vlan, with failover
1021 use their own vlan, to give lacp-like functionality
1022 without requiring lacp-capable switching hardware.
1037 the failover, subsequent packets are sent in each 200ms interval.
1039 The valid range is 0 - 255; the default value is 1. A value of 0
1043 This option is useful for bonding modes balance-rr (0), active-backup
1044 (1), balance-tlb (5) and balance-alb (6), in which a failover can
1056 The valid range is 1 - 0x7fffffff; the default value is 1. This Option
1057 has effect only in balance-tlb and balance-alb modes.
1085 $ rpm -qf /sbin/ifup
1100 ----------------------------------------
1113 ifcfg-id file for each slave device. The simplest way to accomplish
1115 file ifcfg-id file created; see below for some issues with DHCP). The
1118 ifcfg-id-xx:xx:xx:xx:xx:xx
1123 Once the set of ifcfg-id-xx:xx:xx:xx:xx:xx files has been
1133 _nm_name='bus-pci-0001:61:01.0'
1143 Once the ifcfg-id-xx:xx:xx:xx:xx:xx files have been modified,
1145 itself. This file is named ifcfg-bondX, where X is the number of the
1147 ifcfg-bond0, the second is ifcfg-bond1, and so on. The sysconfig
1151 The contents of the ifcfg-bondX file is as follows::
1161 BONDING_MODULE_OPTS="mode=active-backup miimon=100"
1163 BONDING_SLAVE1="bus-pci-0000:06:08.1"
1202 (bus-pci-0000:06:08.1 in the example above) specify the physical
1233 -------------------------------
1243 -----------------------------------------------
1247 bonding instance to have an appropriately configured ifcfg-bondX file
1251 ifcfg-bondX files.
1254 options in the ifcfg-bondX file, it is not necessary to add them to
1258 ------------------------------------------
1271 network-script file for all physical adapters that will be members of
1274 /etc/sysconfig/network-scripts
1276 The file name must be prefixed with "ifcfg-eth" and suffixed
1278 for eth0 would be named /etc/sysconfig/network-scripts/ifcfg-eth0.
1289 must correspond with the name of the file, i.e., ifcfg-eth1 must have
1297 script will be /etc/sysconfig/network-scripts/ifcfg-bondX where X is
1298 the number of the bond. For bond0 the file is named "ifcfg-bond0",
1299 for bond1 it is named "ifcfg-bond1", and so on. Within that file,
1316 and, indeed, preferable, to specify the bonding options in the ifcfg-bond0
1319 BONDING_OPTS="mode=active-backup arp_interval=60 arp_ip_target=192.168.1.254"
1342 options bond0 mode=balance-alb miimon=100
1352 ---------------------------------
1365 -------------------------------------------------
1369 specifying the appropriate BONDING_OPTS= in ifcfg-bondX where X is the
1377 -----------------------------------------------
1396 modprobe bonding mode=balance-alb miimon=100
1419 enabled without re-running the entire global init script.
1435 -----------------------------------------
1464 options bond0 -o bond0 mode=balance-rr miimon=100
1467 options bond1 -o bond1 mode=balance-alb miimon=50
1470 named "bond0" and creates the bond0 device in balance-rr mode with an
1472 bond1 device in balance-alb mode with an miimon of 50.
1479 install bond1 /sbin/modprobe --ignore-install bonding -o bond1 \
1480 mode=balance-alb miimon=50
1486 to rename modules at load time (the "-o bond1" part). Attempts to pass
1494 ------------------------------------------
1514 -----------------------------
1521 # echo -bar > /sys/class/net/bonding_masters
1534 --------------------------
1546 # echo -eth0 > /sys/class/net/bond0/bonding/slaves
1555 # echo -eth0 > /sys/class/net/eth0/master/bonding/slaves
1560 -------------------------------
1564 The names of these files correspond directly with the command-
1573 To configure bond0 for balance-alb mode::
1577 - or -
1578 # echo balance-alb > /sys/class/net/bond0/bonding/mode
1584 To enable MII monitoring on bond0 with a 1 second interval::
1591 monitoring is enabled, and vice-versa.
1604 # echo -192.168.0.100 > /sys/class/net/bond0/bonding/arp_ip_target
1606 To configure the interval between learning packet transmits::
1614 default interval is 1 second.
1617 ---------------------
1628 echo balance-alb > /sys/class/net/bond0/bonding/mode
1635 active-backup mode, using ARP monitoring, add the following lines to
1640 echo active-backup > /sys/class/net/bond1/bonding/mode
1648 -----------------------------------------
1655 the box. The ifenslave-2.6 package should be installed to provide bonding
1656 support. Once installed, this package will provide ``bond-*`` options
1659 Note that ifenslave-2.6 package will load the bonding module and use
1663 ----------------------
1666 active-backup mode, with eth0 and eth1 as slaves::
1670 bond-slaves eth0 eth1
1671 bond-mode active-backup
1672 bond-miimon 100
1673 bond-primary eth0 eth1
1682 bond-slaves none
1683 bond-mode active-backup
1684 bond-miimon 100
1688 bond-master bond0
1689 bond-primary eth0 eth1
1693 bond-master bond0
1694 bond-primary eth0 eth1
1696 For a full list of ``bond-*`` supported options in /etc/network/interfaces and
1698 /usr/share/doc/ifenslave-2.6.
1701 ----------------------------------------------
1724 Bonding Mode: fault-tolerance (active-backup)
1728 MII Polling Interval (ms): 0
1729 Up Delay (ms): 0
1730 Down Delay (ms): 0
1775 a pass-through for selecting output queues on the slave device rather than
1779 output slave selection was limited to round-robin and active-backup modes.
1782 ----------------------------------------------------------
1798 (a) ad_actor_system : You can set a random mac-address that can be used for
1800 Also it's preferable to set the local-admin bit. Following shell code
1801 generates a random mac-address as described above::
1813 is 65535, but system can take the value from 1 - 65535. Following shell
1819 (c) ad_user_port_key : Use the user portion of the port-key. The default
1820 keeps this empty. These are the upper 10 bits of the port-key and value
1821 ranges from 0 - 1023. Following shell code generates these 10 bits and
1832 -------------------------
1834 Each bonding device has a read-only file residing in the
1843 Bonding Mode: load balancing (round-robin)
1846 MII Polling Interval (ms): 1000
1847 Up Delay (ms): 0
1848 Down Delay (ms): 0
1862 -------------------------
1905 The active-backup, balance-tlb and balance-alb modes do not
1916 The balance-rr, balance-xor and broadcast modes generally
1936 packets generated by either ALB mode or the ARP monitor mechanism, are
1948 "un-accelerated" by the bonding driver so the VLAN tag sits in the
1955 would pick up the all-zeroes hardware address. Once the first slave
1976 underlying device -- i.e. the bonding interface -- to promiscuous
1984 monitoring a slave device's link state: the ARP monitor and the MII
1985 monitor.
1991 7.1 ARP Monitor Operation
1992 -------------------------
1994 The ARP monitor operates as its name suggests: it sends ARP
2001 ------------------------------------
2005 monitor. In the case of just one target, the target itself may go
2023 7.3 MII Monitor Operation
2024 -------------------------
2026 The MII monitor monitors only the carrier state of the local
2033 then the MII monitor will rely on the driver for carrier state
2035 use_carrier parameter information, above, if the MII monitor fails to
2040 If use_carrier is 0, then the MII monitor will first query the
2043 monitor will make an ethtool ETHTOOL_GLINK request to attempt to obtain
2046 and ethtool requests), then the MII monitor will assume the link is
2053 -------------------------
2069 receive/transmit times in the driver (needed by the ARP monitor), but
2073 The ARP monitor (and ARP itself) may become confused by this
2074 configuration, because ARP requests (generated by the ARP monitor)
2078 interface basis), and is discarded. The MII monitor is not affected
2088 ----------------------------
2099 options bond0 mode=some-mode miimon=50
2132 ---------------------------------------------------------
2144 some fixed interval. In this case, miimon will detect failures, but
2149 fixed interval, but does not cache the MII register values (so the
2217 For the balance-rr, balance-xor, broadcast, and 802.3ad modes,
2220 For the active-backup, balance-tlb and balance-alb modes, the
2223 For balance-tlb mode, the active slave is the slave currently
2226 For balance-alb mode, the active slave is the slave used as a
2227 "primary." This slave is used for mode-specific control traffic, for
2230 For the active-backup, balance-tlb and balance-alb modes, when
2245 --------------------------------------------------
2259 ----------------------------------------------------
2270 +-----+----+ +-----+----+
2272 | switch A +--------------------------+ switch B |
2274 +-----+----+ +-----++---+
2276 | +-------+ |
2277 +-------------+ host1 +---------------+
2278 eth0 +-------+ eth1
2286 -------------------------------------------------------------
2288 In a topology such as the example above, the active-backup and
2293 active-backup:
2306 necessary for some specific one-way traffic to reach both
2310 ----------------------------------------------------------------
2316 end, the MII monitor has no direct means to detect this. The ARP
2317 monitor could be configured with a target at the remote end of port3,
2321 monitor can provide a higher level of reliability in detecting end to
2324 the ARP monitor should be configured with multiple targets (at least
2326 regardless of which switch is active, the ARP monitor has a suitable
2334 to the logically "interior" ports that bonding is able to monitor via
2336 switch, but this can be a viable alternative to the ARP monitor when using
2343 ------------------------------------------------------
2359 +----------+ +----------+
2361 | Host A +---------------------+ router +------------------->
2362 | +---------------------+ | Hosts B and C are out
2364 +----------+ +----------+
2386 +----------+ +----------+ +--------+
2387 | |eth0 port1| +-------+ Host B |
2388 | Host A +------------+ switch |port3 +--------+
2389 | +------------+ | +--------+
2390 | |eth1 port2| +------------------+ Host C |
2391 +----------+ +----------+port4 +--------+
2414 -----------------------------------------------------------
2420 balance-rr:
2447 through the switch to a balance-rr bond will not utilize greater
2459 active-backup:
2461 the active-backup mode, as the inactive backup devices are all
2465 available bandwidth. On the plus side, active-backup mode
2470 balance-xor:
2480 As with balance-rr, the switch ports need to be configured for
2484 Like active-backup, there is not much advantage to this
2500 balance modes other than balance-rr, no single connection will
2513 Finally, the 802.3ad mode mandates the use of the MII monitor,
2514 therefore, the ARP monitor is not available in this mode.
2516 balance-tlb:
2517 The balance-tlb mode balances outgoing traffic by peer.
2523 manner (not a simple XOR as in balance-xor or 802.3ad mode),
2533 monitor is not available.
2535 balance-alb:
2536 This mode is everything that balance-tlb is, and more.
2537 It has all of the features (and restrictions) of balance-tlb,
2547 ----------------------------------------------------
2551 support the use of the ARP monitor, and are thus restricted to using
2552 the MII monitor (which does not provide as high a level of end to end
2553 assurance as the ARP monitor).
2556 -----------------------------------------------------
2562 +-----------+
2564 +-+---+---+-+
2566 +--------+ | +---------+
2568 +------+---+ +-----+----+ +-----+----+
2570 +------+---+ +-----+----+ +-----+----+
2572 +--------+ | +---------+
2574 +-+---+---+-+
2576 +-----------+
2591 -------------------------------------------------------------
2594 configurations of this type is balance-rr. Historically, in this
2599 packets has arrived). When employed in this fashion, the balance-rr
2604 ------------------------------------------------------
2606 Again, in actual practice, the MII monitor is most often used
2608 availability. The ARP monitor will function in this topology, but its
2609 advantages over the MII monitor are mitigated by the volume of probes
2617 -------------------------------------------
2652 --------------------------------
2664 For example, on a bond in active-backup mode with five slaves
2667 # ping -n 10.0.4.2
2669 64 bytes from 10.0.4.2: icmp_seq=1 ttl=64 time=13.7 ms
2670 64 bytes from 10.0.4.2: icmp_seq=1 ttl=64 time=13.8 ms (DUP!)
2671 64 bytes from 10.0.4.2: icmp_seq=1 ttl=64 time=13.8 ms (DUP!)
2672 64 bytes from 10.0.4.2: icmp_seq=1 ttl=64 time=13.8 ms (DUP!)
2673 64 bytes from 10.0.4.2: icmp_seq=1 ttl=64 time=13.8 ms (DUP!)
2674 64 bytes from 10.0.4.2: icmp_seq=2 ttl=64 time=0.216 ms
2675 64 bytes from 10.0.4.2: icmp_seq=3 ttl=64 time=0.267 ms
2676 64 bytes from 10.0.4.2: icmp_seq=4 ttl=64 time=0.222 ms
2691 most Cisco switches, the privileged command "clear mac address-table
2702 --------------------
2707 balance-rr, active-backup, balance-tlb and balance-alb modes. This is
2712 --------------------------------
2715 integrated on the planar (that's "motherboard" in IBM-speak). In the
2718 An add-on Broadcom daughter card can be installed on a JS20 to provide
2727 Additional BladeCenter-specific networking information can be
2730 - "IBM eServer BladeCenter Networking Options"
2731 - "IBM eServer BladeCenter Layer 2-7 Network Switching"
2734 ------------------------------------
2759 -------------------------------
2761 The balance-rr mode requires the use of passthrough modules
2764 appropriate ports, as is usual for balance-rr.
2766 The balance-alb and balance-tlb modes will function with
2773 The active-backup mode has no additional requirements.
2776 ----------------------
2779 monitor will reliably detect link loss to an external switch. This is
2783 ports and the devices on the JS20 system itself. The MII monitor is
2786 When a passthrough module is in place, the MII monitor does
2791 --------------
2801 avoid fail-over delay issues when using bonding.
2808 -------------------
2814 -----------------------------------------
2816 Any Ethernet type cards (you can even mix cards - a Intel
2821 slaves in active-backup mode.
2824 ----------------------------------------
2829 ----------------------------------------------
2836 ----------------------------------------
2839 disabled. The active-backup mode will fail over to a backup link, and
2849 the underlying network device, and the arp monitor (arp_interval)
2859 ----------------------------------------------
2864 ---------------------------------------------
2868 In the basic balance modes (balance-rr and balance-xor), it
2873 The advanced balance modes (balance-tlb and balance-alb) do
2882 The active-backup mode should work with any Layer-II switch.
2885 ---------------------------------------------------------
2907 # ifconfig bond0 down ; modprobe -r bonding
2915 from the bond (``ifenslave -d bond0 eth0``). The bonding driver will
2920 ------------------------------------------
2922 * balance-rr (0)
2923 * active-backup (1)
2924 * balance-xor (2)
2948 http://vger.kernel.org/vger-lists.html#netdev