Re: 6509-e see MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK in the log

michael-becker · ‎01-08-2019

What does this log entry mean and is it an issue?

here is log:

an 8 2019 09:14:09 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 1 from possible src-ip FE80::432::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0860.:xxxx:xxxx
Jan 8 2019 09:14:43 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 1
Jan 8 2019 10:12:02 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 12 from possible src-ip FE80::85A7:xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0860.xxx.xxx
Jan 8 2019 10:12:36 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 12
Jan 8 2019 10:13:56 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 12 from possible src-ip FE80::85A7::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0860.xxx.xxxx
Jan 8 2019 10:14:27 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 12
Jan 8 2019 10:23:13 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 21 from possible src-ip FE80::E549::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0cc4.xxxx.xxxx
Jan 8 2019 10:23:44 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 21
Jan 8 2019 11:09:27 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 12 from possible src-ip FE80::C581::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0860.xxxx.xxxx
Jan 8 2019 11:10:00 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 12

Jan 8 2019 10:23:13 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 212 from possible src-ip FE80::E549::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0cc4.xxxx.xxxx
Jan 8 2019 10:23:44 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 212
Jan 8 2019 11:09:27 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_FALLBACK: Address Aliasing detected for 3333.0000.0001 on vlan 122 from possible src-ip FE80::C581::xxxx:xxxx:xxxx dst-ip FF05::1 src-mac 0860.xxxx.xxxx
Jan 8 2019 11:10:00 EST: %MCAST-SP-6-MLD_ADDRESS_ALIASING_NORMALMODE: Address Aliasing timer expired reinstalling entry for group 3333.0000.0001 on vlan 122

sunnnaik1 · ‎02-19-2019

hii,

try dropping the src-mac addresses on each Vlan & check.

"mac address-table static xxxx.yyyy.zzzz vlan X drop"

just give it a try.

stefanwillumeit · ‎04-11-2019

Hello,

we too are seeing this on a Cat6509 coming from various source addresses.

This so much seems to be some weird bug.

Cat is running 12.2(33)SXI2a.

Any Bug ID?