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doc: Document LLDP config support

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Ahmed Karic
2025-05-13 16:59:25 +02:00
parent 71b4aed05d
commit e40fc33a55
2 changed files with 63 additions and 1 deletions
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doc/ChangeLog.md
+5
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@@ -12,6 +12,10 @@ All notable changes to the project are documented in this file.
- Upgrade netopeer2 (NETCONF) to 2.4.1
- Add documentation on Infix upgrading and downgrading, issue #1009
- Add HDMI and USB support for iMX8MP-evk
- Enforced strict format for LLDP destination MAC address:
- Only accepts colon-separated format: `01:80:C2:00:00:0E`
- Add `show lldp` command to show discovered neighbors per interface.
- Add configuration support for per-interface LLDP administrative status
### Fixes
- Fix containers with multiple mounts
@@ -128,6 +132,7 @@ All notable changes to the project are documented in this file.
- Add support for GRE/GRETAP tunnels
- Add support for STP/RSTP on bridges
- Add support for VXLAN tunnels
- Add support for configuring global LLDP `message-tx-interval`
### Fixes
doc/discovery.md
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@@ -46,7 +46,7 @@ admin@infix-c0-ff-ee:~$
## LLDP
Infix supports LLDP (IEEE 802.1AB). For a device with factory default
Infix supports LLDP (IEEE 802.1AB). For a device with factory default
settings, the link-local IPv6 address can be read from the Management
Address TLV using *tcpdump* or other sniffing tools[^1]:
@@ -131,6 +131,10 @@ tcpdump: listening on tap0, link-type EN10MB (Ethernet), snapshot length 262144
linux-pc:#
```
The following capabilities are available via NETCONF/RESTCONF or the Infix CLI.
### LLDP Enable/Disable
The LLDP service can be disabled using the following commands.
```
@@ -140,6 +144,59 @@ admin@infix-c0-ff-ee:/config/> leave
admin@infix-c0-ff-ee:/>
```
To reenable it from the CLI config mode:
```
admin@test-00-01-00:/config/> set lldp enabled
admin@test-00-01-00:/config/> leave
```
### LLDP Message Transmission Interval
By default, LLDP uses a `message-tx-interval` of 30 seconds, as defined
by the IEEE standard. Infix allows this value to be customized.
To change it using the CLI:
```
admin@test-00-01-00:/config/> set lldp message-tx-interval 1
admin@test-00-01-00:/config/> leave
```
### LLDP Administrative Status per Interface
Infix supports configuring the LLDP administrative status on a per-port
basis. The default mode is `tx-and-rx`, but the following options are
also supported:
- `rx-only` – Receive LLDP packets only
- `tx-only` – Transmit LLDP packets only
- `disabled` – Disable LLDP on the interface
Example configuration:
```
admin@test-00-01-00:/config/> set lldp port e8 dest-mac-address 01:80:C2:00:00:0E admin-status disabled
admin@test-00-01-00:/config/> set lldp port e5 dest-mac-address 01:80:C2:00:00:0E admin-status rx-only
admin@test-00-01-00:/config/> set lldp port e6 dest-mac-address 01:80:C2:00:00:0E admin-status tx-only
admin@test-00-01-00:/config/> leave
```
> [!NOTE]
> The destination MAC address must be the standard LLDP multicast
> address: `01:80:C2:00:00:0E`.
### Displaying LLDP Neighbor Information
In CLI mode, Infix also provides a convenient `show lldp` command to
list LLDP neighbors detected on each interface:
```
admin@test-00-01-00:/> show lldp
INTERFACE REM-IDX TIME CHASSIS-ID PORT-ID
e5 1 902 00:a0:85:00:04:01 00:a0:85:00:04:07
e6 3 897 00:a0:85:00:03:01 00:a0:85:00:03:07
e8 2 901 00:a0:85:00:02:01 00:a0:85:00:02:05
```
## mDNS-SD