Public bug reported:
The default neighbor limits can be quite low (1024) for a kernel that
the l3 agent is running on. If the agent is serving hundreds of tenants,
it can quite easily blow past this limit, causing contention for a spot
in the ARP table (or neighbor table in IPv6) and network instability.
The l3 agent should set a higher default to match the expectations of a
node with an l3 agent on it.
** Affects: neutron
Importance: Undecided
Assignee: Kevin Benton (kevinbenton)
Status: New
** Changed in: neutron
Assignee: (unassigned) => Kevin Benton (kevinbenton)
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https://bugs.launchpad.net/bugs/1490060
Title:
kernel arp neighbor limits should be adjusted by l3 agent
Status in neutron:
New
Bug description:
The default neighbor limits can be quite low (1024) for a kernel that
the l3 agent is running on. If the agent is serving hundreds of
tenants, it can quite easily blow past this limit, causing contention
for a spot in the ARP table (or neighbor table in IPv6) and network
instability.
The l3 agent should set a higher default to match the expectations of
a node with an l3 agent on it.
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