%CDP-4-DUPLEX_MISMATCH: logs

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jroleon
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Joined: Sat Aug 18, 2018 2:18 pm

%CDP-4-DUPLEX_MISMATCH: logs

Post by jroleon » Sat Aug 18, 2018 2:27 pm

Hello guys,

for some reason these logs start to appear

Aug 18 14:10:36.779: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet5 (not half duplex), with CE67 GigabitEthernet0/1 (half duplex)

CSR1000V Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S

interface GigabitEthernet5
ip address x
ip pim sparse-mode
negotiation auto
ospfv3 3 ipv6 area 0
cdp enable

IOSv Software (VIOS-ADVENTERPRISEK9-M), Version 15.6(2)T

interface GigabitEthernet0/1
ip address Y
ip pim sparse-mode
duplex auto
speed auto
media-type rj45
ipv6 ospf 2 area 0
end

Any ideas?

Uldis (UD)
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Re: %CDP-4-DUPLEX_MISMATCH: logs

Post by Uldis (UD) » Sat Aug 18, 2018 3:26 pm

actually such command like

duplex full

exist under interface as well :)

Uldis

AndreaBB
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Re: %CDP-4-DUPLEX_MISMATCH: logs

Post by AndreaBB » Sat Aug 18, 2018 4:34 pm

Long explanation:
it's a vOIS bug due to duplex auto negotiation failure, you can do nothing but configure a full duplex every time the device reload.
Andrea
CCIE #60810

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NitrousOxyde
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Re: %CDP-4-DUPLEX_MISMATCH: logs

Post by NitrousOxyde » Mon Sep 03, 2018 7:23 am

If I am not wrong, the same issue was with l2 IOL, so, needed to add duplex settings after each reboot
CCIE R&S #59198
JNCIP-SP, JNCIP-ENT

arteq
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Re: %CDP-4-DUPLEX_MISMATCH: logs

Post by arteq » Mon Sep 03, 2018 2:20 pm

from interface config mode

int rang x/x-x
no negotiation auto
duplex full

cop r s

export cfg

Clyber
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Re: %CDP-4-DUPLEX_MISMATCH: logs

Post by Clyber » Sun Jan 06, 2019 9:49 pm

I cant believe we came this far but something simple as duplex mismatch cant be fixed for once and for all.

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