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Not all interfaces have the same characteristics within the bonding group.
For active-backup mode, we should do our best to select the slave that
performs the best as the primary slave. We already did that by preferring
the slave that is local numa. Sometimes, this is not enough. For example,
when all are local numas, the selection is arbitrary. Some slave interfaces
may have higher speed or better qos than the others. But this is hard to
infer.
One rule does not fit all. So we let the operator to optionally specify the
weight for each slave interface. Our primary slave selection rule is now
1. biggest weight
2. is local numa
3. current primary slave (to avoid churn)
4. lowest sw_if_index (for deterministic behavior)
This selection rule only applies to active-backup mode which only one slave
is used for forwarding traffic until it becomes unreachable. At that time,
the next "best" slave candidate is automatically promoted. The slaves are
sorted according to the preference rule when they are up. So there is no need
to find the next best candidate when the primary slave goes down.
Another good thing about this rule is when the down slave comes back up, it
is selected as the primary slave again unless there is indeed a "better"
slave than this down slave that were added during that period.
To set the weight for the slave interface, do this after the interface is
enslaved
set interface bond <interface-name> weight <value>
Type: feature
Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I59ced6d20ce1dec532e667dbe1afd1b4243e04f9
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If numa-only is set, Only slaves on local numa node
transmit pkts if have at least one, otherwise the bond
interface works as usual.
CLI change:
create bond mode lacp [load-balance { l2 | l23 | l34 } {numa-only}]
[hw-addr <mac-address>] [id <if-id>]
The new member "u8 numa_only;" is also added to bond_create_if_args_t.
Type: feature
Change-Id: Icdccedafb0738d8c9d4a5acce909ce562428c071
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
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Change-Id: I78fe58144fa3ba2e1c7135897a13a2541f235c91
Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
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Add bonding driver to support creation of bond interface which composes of
multiple slave interfaces. The slave interfaces could be physical interfaces,
or just any virtual interfaces. For example, memif interfaces.
The syntax to create a bond interface is
create bond mode <lacp | xor | acitve-backup | broadcast | round-robin>
To enslave an interface to the bond interface,
enslave interface TenGigabitEthernet6/0/0 to BondEthernet0
Please see src/plugins/lacp/lacp_doc.md for more examples and additional
options.
LACP is a control plane protocol which manages and monitors the status of
the slave interfaces. The protocol is part of 802.3ad standard. This patch
implements LACPv1. LACPv2 is not supported.
To enable LACP on the bond interface, specify "mode lacp" when the bond
interface is created. The syntax to enslave a slave interface is the same as
other bonding modes.
Change-Id: I06581d3b87635972f9f0e1ec50b67560fc13e26c
Signed-off-by: Steven <sluong@cisco.com>
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Steven Luong
Zhiyong Yang
Alexander Chernavin