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Add bridgedomain settings.

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Bridges can be created with default settings, with specific settings,
and they can be sync'd at runtime with all of the settings in this
change.

Notably missing are two features:
- unknown unicast flooding into specific interfaces (as opposed to
  on/off on the bridge)
- learn-limit, which does not have an API getter, only a setter.
This commit is contained in:
Pim van Pelt
2022-04-05 12:01:13 +00:00
parent f53f7d5095
commit fdb732142a
8 changed files with 155 additions and 9 deletions
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30
docs/config-guide.md
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@ -105,17 +105,24 @@ BridgeDomains are required to be named `bdN` where N in [1, 16777216). Note that
* ***interfaces***: A list of zero or more interfaces or sub-interfaces that are bridge
members. If the bridge has a `BVI`, it MUST NOT appear in this list. Bridges are allowed to
exist with no member interfaces.
* ***settings***: A map of bridge-domain settings to further manipulate its behavior:
* ***learn***: A boolean that turns learning on/off. Default True.
* ***unicast-flood***: A boolean that turns unicast flooding on/off. Default True.
* ***unknown-unicast-flood***: A boolean that turns unknown unicast flooding on/off.
Default True.
* ***unicast-forward***: A boolean that turns unicast forwarding on/off. Default True.
* ***arp-termination***: A boolean that turns termination and response of ARP Requests
on/off. Default False.
* ***arp-unicast-forward***: A boolean that turns L2 arp-unicast forwarding on/off.
Default False.
* ***mac-age-minutes***: An integer between [0,256) that drives the ARP timeout on the
bridge in minutes, where 0 means do not age out, which is the default.
Any member sub-interfaces that are added, will automatically be configured to tag-rewrite the
number of tags they have, so a simple dot1q sub-interface will be configured as `pop 1`, while
a QinQ or QinAD sub-interface will be configured as `pop 2`. Conversely, when interfaces are
removed from the bridge, their tag-rewriting will be disabled.
*Caveat*: Currently, bridgedomains are always created with their default attributes in VPP, that
is to say with learning and unicast forwarding turned on, unknown-unicast flooding enabled,
and ARP terminating and aging turned off. In a future release, `vppcfg` will give more
configuration options.
Examples:
```
bridgedomains:
@ -124,9 +131,20 @@ bridgedomains:
bvi: loop1
interfaces: [ BondEthernet0.500, HundredGigabitEthernet12/0/1, vxlan_tunnel1 ]
bd11:
description: "No member interfaces, default 1500 byte MTU"
description: "No members, default 1500 byte MTU, with (default) settings"
settings:
learn: True
unicast-flood: True
unknown-unicast-flood: True
unicast-forward: True
arp-termination: False
arp-unicast-forward: False
mac-age-minutes: 0
```
*Caveat*: The flooding of unknown-unicast can be turned on or off, but flooding to a specific interface
(as opposed to all interfaces which is the default), is not supported.
### BondEthernets
BondEthernets are required to be named `BondEthernetN` (note the camelcase) where N in