hello all member, i m very glad to konw that you take care of new member. this my problem: after finish to implement glbp everythings work well but when i make show glbp i saw this message Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
i will like to know if it is problem or tell me more. i informed you that the flapping problem have been solved. thinks for your help.
Hello,
do you have this error message? %GLBP-4-DUPADDR: Duplicate address
Please check this link.
%GLBP-4-DUPADDR: Duplicate address
The error message indicates a possible layer2 loop and STP configuration issues.
In order to resolve this issue, issue the show interface command to verify the MAC address of the interface. If the MAC address of the interface is the same as the one reported in the error message, then it indicates that this router is receiving its own hello packets sent. Verify the spanning-tree topology and check if there is any layer2 loop. If the interface MAC address is different from the one reported in the error message, then some other device with a MAC address reports this error message.
Note: GLBP members communicate between each other through hello messages sent every 3 seconds to the multicast address 224.0.0.102 and User Datagram Protocol (UDP) port 3222 (source and destination). When configuring the multicast boundary command, permit the Multicast address by permit 224.0.0.0 15.255.255.255
1 Like
hello lukas i check a long time on my configuration but i didn’t see a problem. but i have one suggestion. i have to DHCP server on my network . and i informed you also that the gateway of all the pool is a same. for me i thank that the problem come there but i need your help. please are below my config on the two switch:
on SD1 :
SWD1-1#sh run | begin dhcp
no ip dhcp conflict logging
ip dhcp conflict resolution
ip dhcp excluded-address 192.168.15.1 192.168.15.50
ip dhcp excluded-address 192.168.15.250 192.168.15.254
ip dhcp excluded-address 192.168.16.1 192.168.16.50
ip dhcp excluded-address 192.168.16.250 192.168.16.254
ip dhcp excluded-address 192.168.17.1 192.168.17.50
ip dhcp excluded-address 192.168.17.250 192.168.17.254
ip dhcp excluded-address 192.168.18.1 192.168.18.50
ip dhcp excluded-address 192.168.18.250 192.168.18.254
ip dhcp excluded-address 192.168.19.1 192.168.19.50
ip dhcp excluded-address 192.168.19.250 192.168.19.254
ip dhcp excluded-address 192.168.20.1 192.168.20.50
ip dhcp excluded-address 192.168.20.250 192.168.20.254
ip dhcp excluded-address 192.168.21.1 192.168.21.50
ip dhcp excluded-address 192.168.21.250 192.168.21.254
ip dhcp excluded-address 192.168.22.1 192.168.22.50
ip dhcp excluded-address 192.168.22.250 192.168.22.254
ip dhcp excluded-address 192.168.23.1 192.168.23.50
ip dhcp excluded-address 192.168.23.250 192.168.23.254
ip dhcp excluded-address 192.168.24.1 192.168.24.50
ip dhcp excluded-address 192.168.24.250 192.168.24.254
ip dhcp excluded-address 192.168.25.1 192.168.25.50
ip dhcp excluded-address 192.168.25.250 192.168.25.254
ip dhcp excluded-address 192.168.15.151 192.168.15.249
ip dhcp excluded-address 192.168.16.151 192.168.16.249
ip dhcp excluded-address 192.168.17.151 192.168.17.249
ip dhcp excluded-address 192.168.18.151 192.168.18.249
ip dhcp excluded-address 192.168.19.151 192.168.19.249
ip dhcp excluded-address 192.168.20.151 192.168.20.249
ip dhcp excluded-address 192.168.21.151 192.168.21.249
ip dhcp excluded-address 192.168.22.151 192.168.22.249
ip dhcp excluded-address 192.168.23.151 192.168.23.249
ip dhcp excluded-address 192.168.24.151 192.168.24.249
ip dhcp excluded-address 192.168.25.151 192.168.25.249
ip dhcp excluded-address 192.168.16.104
ip dhcp excluded-address 192.168.16.108
ip dhcp excluded-address 192.168.25.143
ip dhcp excluded-address 192.168.14.1 192.168.14.50
ip dhcp excluded-address 192.168.14.250 192.168.14.254
ip dhcp excluded-address 192.168.14.151 192.168.14.249
!
ip dhcp pool vlan15
network 192.168.15.0 255.255.255.0
default-router 192.168.15.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 30
!
ip dhcp pool vlan16
network 192.168.16.0 255.255.255.0
default-router 192.168.16.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
address 192.168.16.150 hardware-address a032.997d.663e
!
ip dhcp pool vlan17
network 192.168.17.0 255.255.255.0
default-router 192.168.17.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan18
network 192.168.18.0 255.255.255.0
default-router 192.168.18.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan19
network 192.168.19.0 255.255.255.0
default-router 192.168.19.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan20
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan21
network 192.168.21.0 255.255.255.0
default-router 192.168.21.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan22
network 192.168.22.0 255.255.255.0
default-router 192.168.22.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan23
network 192.168.23.0 255.255.255.0
default-router 192.168.23.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease infinite
!
ip dhcp pool vlan25
network 192.168.25.0 255.255.255.0
default-router 192.168.25.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
address 192.168.25.150 hardware-address a032.997d.663e
!
ip dhcp pool static_add_vlan16
!
ip dhcp pool vlan14
network 192.168.14.0 255.255.255.0
default-router 192.168.14.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease infinite
on SD2:
SWD2-1#sh run | begin dhcp
no ip dhcp conflict logging
ip dhcp conflict resolution
ip dhcp excluded-address 192.168.15.1 192.168.15.50
ip dhcp excluded-address 192.168.15.250 192.168.15.254
ip dhcp excluded-address 192.168.16.1 192.168.16.50
ip dhcp excluded-address 192.168.16.250 192.168.16.254
ip dhcp excluded-address 192.168.17.1 192.168.17.50
ip dhcp excluded-address 192.168.17.250 192.168.17.254
ip dhcp excluded-address 192.168.18.1 192.168.18.50
ip dhcp excluded-address 192.168.18.250 192.168.18.254
ip dhcp excluded-address 192.168.19.1 192.168.19.50
ip dhcp excluded-address 192.168.19.250 192.168.19.254
ip dhcp excluded-address 192.168.20.1 192.168.20.50
ip dhcp excluded-address 192.168.20.250 192.168.20.254
ip dhcp excluded-address 192.168.21.1 192.168.21.50
ip dhcp excluded-address 192.168.21.250 192.168.21.254
ip dhcp excluded-address 192.168.22.1 192.168.22.50
ip dhcp excluded-address 192.168.22.250 192.168.22.254
ip dhcp excluded-address 192.168.23.1 192.168.23.50
ip dhcp excluded-address 192.168.23.250 192.168.23.254
ip dhcp excluded-address 192.168.24.1 192.168.24.50
ip dhcp excluded-address 192.168.24.250 192.168.24.254
ip dhcp excluded-address 192.168.25.1 192.168.25.50
ip dhcp excluded-address 192.168.25.250 192.168.25.254
ip dhcp excluded-address 192.168.15.51 192.168.15.150
ip dhcp excluded-address 192.168.16.51 192.168.16.150
ip dhcp excluded-address 192.168.17.51 192.168.17.150
ip dhcp excluded-address 192.168.18.51 192.168.18.150
ip dhcp excluded-address 192.168.19.51 192.168.19.150
ip dhcp excluded-address 192.168.20.51 192.168.20.150
ip dhcp excluded-address 192.168.21.51 192.168.21.150
ip dhcp excluded-address 192.168.22.51 192.168.22.150
ip dhcp excluded-address 192.168.23.51 192.168.23.150
ip dhcp excluded-address 192.168.24.51 192.168.24.150
ip dhcp excluded-address 192.168.25.51 192.168.25.150
ip dhcp excluded-address 192.168.14.1 192.168.14.50
ip dhcp excluded-address 192.168.14.250 192.168.14.254
ip dhcp excluded-address 192.168.14.51 192.168.14.150
!
ip dhcp pool vlan15
network 192.168.15.0 255.255.255.0
default-router 192.168.15.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 30
!
ip dhcp pool vlan16
network 192.168.16.0 255.255.255.0
default-router 192.168.16.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 12
address 192.168.16.249 hardware-address a032.997d.663e
!
ip dhcp pool vlan17
network 192.168.17.0 255.255.255.0
default-router 192.168.17.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan18
network 192.168.18.0 255.255.255.0
default-router 192.168.18.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan19
network 192.168.19.0 255.255.255.0
default-router 192.168.19.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan20
default-router 192.168.25.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan25
network 192.168.25.0 255.255.255.0
default-router 192.168.25.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
address 192.168.25.249 hardware-address a032.997d.663e
!
ip dhcp pool vlan21
network 192.168.21.0 255.255.255.0
default-router 192.168.21.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan22
network 192.168.22.0 255.255.255.0
default-router 192.168.22.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease 0 0 20
!
ip dhcp pool vlan23
network 192.168.23.0 255.255.255.0
default-router 192.168.23.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease infinite
!
ip dhcp pool vlan14
network 192.168.14.0 255.255.255.0
default-router 192.168.14.1
domain-name fer.priv
dns-server 192.168.24.15 196.47.128.9 196.47.182.11 41.206.65.5 196.201.78.13
lease infinite
note: on SD1 for vlan 14 up to vlan 19 spanning tree secondary
for vlan 20 - vlan 25, 44, 70 spanning tree primary.
SD1 : for vlan 14 up to vlan 19 spanning tree primary
for vlan 20 - vlan 25, 44, 70 spanning tree secondary.
any suggestion and remark are well come. thanks for your help. best reagrds
Could you please send us the glbp config, show glbp brief command and the exact logging message?
SWD1-1#sh glbp brief
Interface Grp Fwd Pri State Address Active router Standby router
Vl14 14 - 100 Standby 192.168.14.1 192.168.14.254 local
Vl14 14 1 - Listen 0007.b400.0e01 192.168.14.254 -
Vl14 14 2 - Active 0007.b400.0e02 local -
Vl15 15 - 100 Standby 192.168.15.1 192.168.15.254 local
Vl15 15 1 - Listen 0007.b400.0f01 192.168.15.254 -
Vl15 15 2 - Active 0007.b400.0f02 local -
Vl16 16 - 100 Standby 192.168.16.1 192.168.16.254 local
Vl16 16 1 - Listen 0007.b400.1001 192.168.16.254 -
Vl16 16 2 - Active 0007.b400.1002 local -
Vl17 17 - 100 Standby 192.168.17.1 192.168.17.254 local
Vl17 17 1 - Listen 0007.b400.1101 192.168.17.254 -
Vl17 17 2 - Active 0007.b400.1102 local -
Vl18 18 - 100 Standby 192.168.18.1 192.168.18.254 local
Vl18 18 1 - Listen 0007.b400.1201 192.168.18.254 -
Vl18 18 2 - Active 0007.b400.1202 local -
Vl19 19 - 100 Standby 192.168.19.1 192.168.19.254 local
Vl19 19 1 - Listen 0007.b400.1301 192.168.19.254 -
Vl19 19 2 - Active 0007.b400.1302 local -
Vl20 20 - 110 Active 192.168.20.1 local 192.168.20.253
Vl20 20 1 - Listen 0007.b400.1401 192.168.20.253 -
Vl20 20 2 - Active 0007.b400.1402 local -
Vl21 21 - 110 Active 192.168.21.1 local 192.168.21.253
Vl21 21 1 - Listen 0007.b400.1501 192.168.21.253 -
Vl21 21 2 - Active 0007.b400.1502 local -
Vl22 22 - 110 Active 192.168.22.1 local 192.168.22.253
Vl22 22 1 - Listen 0007.b400.1601 192.168.22.253 -
Vl22 22 2 - Active 0007.b400.1602 local -
Vl23 23 - 110 Active 192.168.23.1 local 192.168.23.253
Vl23 23 1 - Listen 0007.b400.1701 192.168.23.253 -
Vl23 23 2 - Active 0007.b400.1702 local -
Vl24 24 - 110 Active 192.168.24.1 local 192.168.24.253
Vl24 24 1 - Listen 0007.b400.1801 192.168.24.253 -
Vl24 24 2 - Active 0007.b400.1802 local -
Vl25 25 - 110 Active 192.168.25.1 local 192.168.25.253
Vl25 25 1 - Listen 0007.b400.1901 192.168.25.253 -
Vl25 25 2 - Active 0007.b400.1902 local -
Vl44 44 - 110 Active 10.10.44.4 local 10.10.44.2
Vl44 44 1 - Listen 0007.b400.2c01 10.10.44.2 -
Vl44 44 2 - Active 0007.b400.2c02 local -
Vl70 70 - 110 Active 192.168.70.1 local 192.168.70.253
Vl70 70 1 - Listen 0007.b400.4601 192.168.70.253 -
Vl70 70 2 - Active 0007.b400.4602 local -
Vl200 200 - 110 Active 172.200.200.4 local 172.200.200.2
Vl200 200 1 - Listen 0007.b400.c801 172.200.200.2 -
Vl200 200 2 - Active 0007.b400.c802 local -
on SD 2 :
SWD2-1#sh glbp brief
Interface Grp Fwd Pri State Address Active router Standby router
Vl14 14 - 110 Active 192.168.14.1 local 192.168.14.253
Vl14 14 1 - Active 0007.b400.0e01 local -
Vl14 14 2 - Listen 0007.b400.0e02 192.168.14.253 -
Vl15 15 - 110 Active 192.168.15.1 local 192.168.15.253
Vl15 15 1 - Active 0007.b400.0f01 local -
Vl15 15 2 - Listen 0007.b400.0f02 192.168.15.253 -
Vl16 16 - 110 Active 192.168.16.1 local 192.168.16.253
Vl16 16 1 - Active 0007.b400.1001 local -
Vl16 16 2 - Listen 0007.b400.1002 192.168.16.253 -
Vl17 17 - 110 Active 192.168.17.1 local 192.168.17.253
Vl17 17 1 - Active 0007.b400.1101 local -
Vl17 17 2 - Listen 0007.b400.1102 192.168.17.253 -
Vl18 18 - 110 Active 192.168.18.1 local 192.168.18.253
Vl18 18 1 - Active 0007.b400.1201 local -
Vl18 18 2 - Listen 0007.b400.1202 192.168.18.253 -
Vl19 19 - 110 Active 192.168.19.1 local 192.168.19.253
Vl19 19 1 - Active 0007.b400.1301 local -
Vl19 19 2 - Listen 0007.b400.1302 192.168.19.253 -
Vl20 20 - 100 Standby 192.168.20.1 192.168.20.254 local
Vl20 20 1 - Active 0007.b400.1401 local -
Vl20 20 2 - Listen 0007.b400.1402 192.168.20.254 -
Vl21 21 - 100 Standby 192.168.21.1 192.168.21.254 local
Vl21 21 1 - Active 0007.b400.1501 local -
Vl21 21 2 - Listen 0007.b400.1502 192.168.21.254 -
Vl22 22 - 100 Standby 192.168.22.1 192.168.22.254 local
Vl22 22 1 - Active 0007.b400.1601 local -
Vl22 22 2 - Listen 0007.b400.1602 192.168.22.254 -
Vl23 23 - 100 Standby 192.168.23.1 192.168.23.254 local
Vl23 23 1 - Active 0007.b400.1701 local -
Vl23 23 2 - Listen 0007.b400.1702 192.168.23.254 -
Vl24 24 - 100 Standby 192.168.24.1 192.168.24.254 local
Vl24 24 1 - Active 0007.b400.1801 local -
Vl24 24 2 - Listen 0007.b400.1802 192.168.24.254 -
Vl25 25 - 100 Standby 192.168.25.1 192.168.25.254 local
Vl25 25 1 - Active 0007.b400.1901 local -
Vl25 25 2 - Listen 0007.b400.1902 192.168.25.254 -
Vl44 44 - 100 Standby 10.10.44.4 10.10.44.1 local
Vl44 44 1 - Active 0007.b400.2c01 local -
Vl44 44 2 - Listen 0007.b400.2c02 10.10.44.1 -
Vl70 70 - 100 Standby 192.168.70.1 192.168.70.254 local
Vl70 70 1 - Active 0007.b400.4601 local -
Vl70 70 2 - Listen 0007.b400.4602 192.168.70.254 -
Vl200 200 - 100 Standby 172.200.200.4 172.200.200.1 local
Vl200 200 1 - Active 0007.b400.c801 local -
Vl200 200 2 - Listen 0007.b400.c802 172.200.200.1 -
sh logging :
on sd1
Sep 9 2018 21:27:24: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 21:32:24: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 21:37:25: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 21:52:25: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 21:57:25: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:02:25: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:22:25: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:27:26: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:32:26: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:47:26: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 22:57:26: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 23:02:26: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 23:27:27: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 23:32:27: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 23:42:27: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
Sep 9 2018 23:57:28: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
on SD2:
9 2018 22:28:05: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
Sep 9 2018 22:32:01: %IP-4-DUPADDR: Duplicate address 192.168.25.1 on Vlan25, sourced by 0007.b400.1902
Sep 9 2018 22:33:05: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
Sep 9 2018 22:37:01: %IP-4-DUPADDR: Duplicate address 192.168.25.1 on Vlan25, sourced by 0007.b400.1902
Sep 9 2018 22:38:05: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
Sep 9 2018 22:42:26: %IP-4-DUPADDR: Duplicate address 192.168.23.1 on Vlan23, sourced by 0007.b400.1702
Sep 9 2018 22:47:26: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 22:52:27: %IP-4-DUPADDR: Duplicate address 192.168.23.1 on Vlan23, sourced by 0007.b400.1702
Sep 9 2018 22:57:27: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 23:02:27: %IP-4-DUPADDR: Duplicate address 192.168.23.1 on Vlan23, sourced by 0007.b400.1702
Sep 9 2018 23:07:27: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 23:12:27: %IP-4-DUPADDR: Duplicate address 192.168.23.1 on Vlan23, sourced by 0007.b400.1702
Sep 9 2018 23:17:27: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 23:18:06: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
Sep 9 2018 23:22:02: %IP-4-DUPADDR: Duplicate address 192.168.25.1 on Vlan25, sourced by 0007.b400.1902
Sep 9 2018 23:23:06: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
Sep 9 2018 23:27:27: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 23:32:28: %IP-4-DUPADDR: Duplicate address 192.168.23.1 on Vlan23, sourced by 0007.b400.1702
Sep 9 2018 23:37:27: %IP-4-DUPADDR: Duplicate address 192.168.21.1 on Vlan21, sourced by 0007.b400.1502
Sep 9 2018 23:42:02: %IP-4-DUPADDR: Duplicate address 192.168.25.1 on Vlan25, sourced by 0007.b400.1902
Sep 9 2018 23:43:07: %IP-4-DUPADDR: Duplicate address 192.168.24.1 on Vlan24, sourced by 0007.b400.1802
on sd1:
interface Vlan15
ip address 192.168.15.253 255.255.255.0
glbp 15 ip 192.168.15.1
glbp 15 timers msec 250 msec 750
glbp 15 preempt delay minimum 180
glbp 15 authentication md5 key-string 7 0709335B031B014654425A
!
interface Vlan16
ip address 192.168.16.253 255.255.255.0
glbp 16 ip 192.168.16.1
glbp 16 timers msec 250 msec 750
glbp 16 preempt delay minimum 180
glbp 16 authentication md5 key-string 7 08275E59440B1D54515B5D
!
interface Vlan17
ip address 192.168.17.253 255.255.255.0
glbp 17 ip 192.168.17.1
glbp 17 timers msec 250 msec 750
glbp 17 preempt delay minimum 180
glbp 17 authentication md5 key-string 7 10481B0E48050A484F547B
!
interface Vlan18
ip address 192.168.18.253 255.255.255.0
glbp 18 ip 192.168.18.1
glbp 18 timers msec 250 msec 750
glbp 18 preempt delay minimum 180
glbp 18 authentication md5 key-string 7 0200164C461417620F1E58
!
interface Vlan19
ip address 192.168.19.253 255.255.255.0
glbp 19 ip 192.168.19.1
glbp 19 timers msec 250 msec 750
glbp 19 preempt delay minimum 180
glbp 19 authentication md5 key-string 7 050D14186C5E564A5A5546
!
interface Vlan20
ip address 192.168.20.254 255.255.255.0
glbp 20 ip 192.168.20.1
glbp 20 timers msec 250 msec 750
glbp 20 priority 110
glbp 20 preempt delay minimum 180
glbp 20 authentication md5 key-string 7 00020111494913454C711D
!
interface Vlan21
description ========== GATEWAY OF DAF ==========
ip address 192.168.21.254 255.255.255.0
glbp 21 ip 192.168.21.1
glbp 21 timers msec 250 msec 750
glbp 21 priority 110
glbp 21 preempt delay minimum 180
glbp 21 authentication md5 key-string 7 094A5C1E54170F51485C55
!
interface Vlan22
ip address 192.168.22.254 255.255.255.0
standby 3 preempt
glbp 22 ip 192.168.22.1
glbp 22 timers msec 250 msec 750
glbp 22 priority 110
glbp 22 preempt delay minimum 180
glbp 22 authentication md5 key-string 7 110F0B125A00134F477A7A
!
interface Vlan23
ip address 192.168.23.254 255.255.255.0
glbp 23 ip 192.168.23.1
glbp 23 timers msec 250 msec 750
glbp 23 priority 110
glbp 23 preempt delay minimum 180
glbp 23 authentication md5 key-string 7 1514191B493833676B6364
!
interface Vlan24
ip address 192.168.24.254 255.255.255.0
glbp 24 ip 192.168.24.1
glbp 24 timers msec 250 msec 750
glbp 24 priority 110
glbp 24 preempt delay minimum 180
glbp 24 authentication md5 key-string 7 0200164C461417620F1E58
!
interface Vlan25
ip address 192.168.25.254 255.255.255.0
glbp 25 ip 192.168.25.1
glbp 25 timers msec 250 msec 750
glbp 25 priority 110
glbp 25 preempt delay minimum 180
glbp 25 authentication md5 key-string 7 050D14186C5E564A5A5546
!
interface Vlan40
ip address 192.168.40.1 255.255.255.0
!
interface Vlan44
ip address 10.10.44.1 255.255.255.0
glbp 44 ip 10.10.44.4
glbp 44 timers msec 250 msec 750
glbp 44 priority 110
glbp 44 preempt delay minimum 180
glbp 44 authentication md5 key-string 7 1514191B493833676B6364
!
interface Vlan70
ip address 192.168.70.254 255.255.255.0
glbp 70 ip 192.168.70.1
glbp 70 timers msec 250 msec 750
glbp 70 priority 110
glbp 70 preempt delay minimum 180
!
interface Vlan200
ip address 172.200.200.1 255.255.255.248
glbp 200 ip 172.200.200.4
glbp 200 timers msec 250 msec 750
glbp 200 priority 110
glbp 200 preempt delay minimum 180
no glbp 200 load-balancing
glbp 200 authentication md5 key-string 7 00020111494913454C711D
SWD2-1#sh run | begin glbp
glbp 14 ip 192.168.14.1
glbp 14 timers msec 250 msec 750
glbp 14 priority 110
glbp 14 preempt delay minimum 180
glbp 14 authentication md5 key-string 7 121F17005F191447697B75
!
interface Vlan15
ip address 192.168.15.254 255.255.255.0
glbp 15 ip 192.168.15.1
glbp 15 timers msec 250 msec 750
glbp 15 priority 110
glbp 15 preempt delay minimum 180
glbp 15 authentication md5 key-string 7 1514191B493833676B6364
!
interface Vlan16
ip address 192.168.16.254 255.255.255.0
glbp 16 ip 192.168.16.1
glbp 16 timers msec 250 msec 750
glbp 16 priority 110
glbp 16 preempt delay minimum 180
glbp 16 authentication md5 key-string 7 1411001C41163268677862
!
interface Vlan17
ip address 192.168.17.254 255.255.255.0
glbp 17 ip 192.168.17.1
glbp 17 timers msec 250 msec 750
glbp 17 priority 110
glbp 17 preempt delay minimum 180
glbp 17 authentication md5 key-string 7 13030505461E1C69687479
!
interface Vlan18
ip address 192.168.18.254 255.255.255.0
glbp 18 ip 192.168.18.1
glbp 18 timers msec 250 msec 750
glbp 18 priority 110
glbp 18 preempt delay minimum 180
glbp 18 authentication md5 key-string 7 0302491C4B1D390F0D5948
!
interface Vlan19
ip address 192.168.19.254 255.255.255.0
glbp 19 ip 192.168.19.1
glbp 19 timers msec 250 msec 750
glbp 19 priority 110
glbp 19 preempt delay minimum 180
glbp 19 authentication md5 key-string 7 06001D36015C115A464743
!
interface Vlan20
description ========== GATEWAY OF DG&PCA ==========
ip address 192.168.20.253 255.255.255.0
glbp 20 ip 192.168.20.1
glbp 20 timers msec 250 msec 750
glbp 20 preempt delay minimum 180
glbp 20 authentication md5 key-string 7 00020111494913454C711D
!
interface Vlan21
ip address 192.168.21.253 255.255.255.0
glbp 21 ip 192.168.21.1
glbp 21 timers msec 250 msec 750
glbp 21 preempt delay minimum 180
glbp 21 authentication md5 key-string 7 045D19114233540D4A4954
!
interface Vlan22
ip address 192.168.22.253 255.255.255.0
glbp 22 ip 192.168.22.1
glbp 22 timers msec 250 msec 750
glbp 22 preempt delay minimum 180
glbp 22 authentication md5 key-string 7 13030505461E1C69687479
!
interface Vlan23
ip address 192.168.23.253 255.255.255.0
glbp 23 ip 192.168.23.1
glbp 23 timers msec 250 msec 750
glbp 23 preempt delay minimum 180
glbp 23 authentication md5 key-string 7 06001D36015C115A464743
!
interface Vlan24
ip address 192.168.24.253 255.255.255.0
glbp 24 ip 192.168.24.1
glbp 24 timers msec 250 msec 750
glbp 24 preempt delay minimum 180
glbp 24 authentication md5 key-string 7 08275E59440B1D54515B5D
!
interface Vlan25
ip address 192.168.25.253 255.255.255.0
glbp 25 ip 192.168.25.1
glbp 25 timers msec 250 msec 750
glbp 25 preempt delay minimum 180
glbp 25 authentication md5 key-string 7 045D19114233540D4A4954
!
interface Vlan40
ip address 192.168.40.2 255.255.255.0
!
interface Vlan44
ip address 10.10.44.2 255.255.255.0
glbp 44 ip 10.10.44.4
glbp 44 timers msec 250 msec 750
glbp 44 preempt delay minimum 180
glbp 44 authentication md5 key-string 7 045D19114233540D4A4954
!
interface Vlan70
description ========= LAN OF GEA ==========
ip address 192.168.70.253 255.255.255.0
glbp 70 ip 192.168.70.1
glbp 70 timers msec 250 msec 750
glbp 70 preempt delay minimum 180
!
interface Vlan200
ip address 172.200.200.2 255.255.255.248
glbp 200 ip 172.200.200.4
glbp 200 timers msec 250 msec 750
glbp 200 preempt delay minimum 180
glbp 200 authentication md5 key-string 7 10481B0E48050A484F547BHello Adia
First of all, whenever you post configurations, please use the “pre-formatted text” formatting as it is very difficult to scroll through the configuration as it is.
Secondly, I think I have to agree with @edelmann.lukas that the issue has to do with a possible layer 2 loop. Notice that in the syslog error that you have posted from SD1:
Sep 9 2018 21:27:24: %IP-4-DUPADDR: Duplicate address 192.168.18.1 on Vlan18, sourced by 0007.b400.1201
the MAC address is that of SD1. So for some reason, on VLAN 18, a GLBP hello packet that is sent by the VLAN 18 SVI is being received by the same VLAN interface. Refer to the documentation mentoined by @edelmann.lukas for further details.
I hope this has been helpful!
Laz
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