Public bug reported:
ip -d link show <bridge name> always duplicates the bridge_id in the
designated_root, even after STP bdpu traffic causes changes to the
correct designated_root. brctl showstp displays the correct designated
root.
Linux noc4 6.8.0-51-generic #52-Ubuntu SMP PREEMPT_DYNAMIC Thu Dec 5
13:09:44 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
root@noc4:~# apt show iproute2
Package: iproute2
Version: 6.1.0-1ubuntu6
example:
ip -d link show isp16bridge
34: isp16bridge: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UP mode DEFAULT group default qlen 1000
link/ether 52:54:9f:78:6b:a4 brd ff:ff:ff:ff:ff:ff promiscuity 0 allmulti
0 minmtu 68 maxmtu 65535
bridge forward_delay 1500 hello_time 200 max_age 2000 ageing_time 30000
stp_state 1 priority 24 vlan_filtering 0 vlan_protocol 802.1Q bridge_id
0018.52:54:9f:78:6b:a4 designated_root 0018.52:54:9f:78:6b:a4 root_port 10 ....
But brctl show displays the correct designated root.
# brctl showstp isp16bridge
isp16bridge
bridge id 0018.52549f786ba4
designated root 0014.52548378569e
root port 10 path cost 23
max age 20.00 bridge max age 20.00
hello time 2.00 bridge hello time 2.00
forward delay 15.00 bridge forward delay 15.00
ageing time 300.00
hello timer 0.00 tcn timer 0.00
topology change timer 0.00 gc timer 220.12
flags
** Affects: iproute2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2094801
Title:
ip -d link show designated_root === bridge_id != brctl showstp
Status in iproute2 package in Ubuntu:
New
Bug description:
ip -d link show <bridge name> always duplicates the bridge_id in the
designated_root, even after STP bdpu traffic causes changes to the
correct designated_root. brctl showstp displays the correct
designated root.
Linux noc4 6.8.0-51-generic #52-Ubuntu SMP PREEMPT_DYNAMIC Thu Dec 5
13:09:44 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
root@noc4:~# apt show iproute2
Package: iproute2
Version: 6.1.0-1ubuntu6
example:
ip -d link show isp16bridge
34: isp16bridge: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP mode DEFAULT group default qlen 1000
link/ether 52:54:9f:78:6b:a4 brd ff:ff:ff:ff:ff:ff promiscuity 0
allmulti 0 minmtu 68 maxmtu 65535
bridge forward_delay 1500 hello_time 200 max_age 2000 ageing_time 30000
stp_state 1 priority 24 vlan_filtering 0 vlan_protocol 802.1Q bridge_id
0018.52:54:9f:78:6b:a4 designated_root 0018.52:54:9f:78:6b:a4 root_port 10 ....
But brctl show displays the correct designated root.
# brctl showstp isp16bridge
isp16bridge
bridge id 0018.52549f786ba4
designated root 0014.52548378569e
root port 10 path cost 23
max age 20.00 bridge max age
20.00
hello time 2.00 bridge hello time
2.00
forward delay 15.00 bridge forward delay
15.00
ageing time 300.00
hello timer 0.00 tcn timer
0.00
topology change timer 0.00 gc timer
220.12
flags
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