I am having issues with the time convergence in this solution. Basically, I have two N4064F in MLAG and running VRRP. Everything works fine, but the time is killing me.
Sometimes it takes 5-12 seconds establish the communication and we have voice in this site. So, we lose the voice while the protocols do their recalculation. It works like this: if we disconnect one of the switches simulating a failure, sometimes it doesn't lose packets, but when reconnect the second switch they do the calculation for both protocols, and we lose connection for 5-12 seconds. Sometimes, We lose packets when we disconnect the switch, but after the re-connection, it will lose one packet, and that's fine.
S,o I need a quick recovery after failure, and after second switch recovery. I have tested all the parameters in VRRP and MLAG: decrease timers, change priorities, disable preempt, and decreasing STP timer, but the result is the same. I not sure what else to do. When I call Dell, they send their guides for MLAG and VRRP. I already followed all those procedures, but the result is the same.
Here are my configuriations:
configure
vlan 2,300,310,330,335,510,555,610-612,1000,3000
exit
vlan 2
name "Red actual"
exit
vlan 310
name "Tel.-Centro"
exit
vlan 510
name "PCs-Centro"
exit
vlan 555
name "administracion"
exit
vlan 610
name "nav-guest"
exit
vlan 611
name "V611"
exit
vlan 612
name "V612"
exit
vlan 1000
name "v1000-HMC"
exit
hostname "CentroSW1"
slot 1/0 5 ! Dell Networking N4064F
slot 1/1 6 ! Dell QSFP Card
stack
member 1 4 ! N4064F
exit
ip http timeout-policy idle 3600 life 86400
ip access-list admin
exit
ip routing
interface vlan 1
ip address dhcp
exit
interface vlan 2
ip address 172.16.4.109 255.255.0.0
exit
interface vlan 300
ip address 172.26.95.2 255.255.255.0
exit
interface vlan 310
ip address 172.26.80.2 255.255.255.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 330
ip address 192.168.230.2 255.255.255.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 510
ip address 172.26.144.2 255.255.240.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 555
ip address 172.26.194.92 255.255.252.0
exit
interface vlan 3000
ip address 192.168.71.17 255.255.255.252
exit
ip route 0.0.0.0 0.0.0.0 172.16.4.1
ip route 172.26.10.0 255.255.255.0 172.16.4.22 5
ip route 172.26.64.0 255.255.252.0 172.16.4.90
ip route 172.26.79.0 255.255.255.0 172.16.4.90
ip route 172.26.128.0 255.255.240.0 172.16.4.90
username "incristian" password c3670758e087fc72a9ffb44f66c1e3e4 privilege 15 encrypted
spanning-tree mode mst
spanning-tree priority 4096
ip vrrp
dhcp l2relay
!
interface Te1/0/1
channel-group 10 mode on
description " MLAG partner link 10"
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/2
channel-group 11 mode on
description "mlag partner link"
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/3
channel-group 13 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/4
channel-group 14 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/5
channel-group 15 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/6
channel-group 16 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/7
channel-group 17 mode on
switchport mode trunk
switchport trunk native vlan 330
switchport trunk allowed vlan 330,335
exit
!
interface Te1/0/11
channel-group 18 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
exit
!
interface Te1/0/12
channel-group 19 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
exit
!
interface Te1/0/44
channel-group 20 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,610,612,1000
exit
!
interface Te1/0/46
channel-group 21 mode on
switchport mode trunk
switchport trunk allowed vlan 2,300,310,335,510,555,610-612,1000
exit
!
interface Te1/0/47
channel-group 1 mode active
description "EnlACEs-entre-switches-MLAG"
spanning-tree disable
switchport mode trunk
udld enable
udld port aggressive
exit
!
interface Te1/0/48
channel-group 1 mode active
description "EnlACEs-entre-switches-MLAG"
spanning-tree disable
switchport mode trunk
udld enable
udld port aggressive
exit
!
interface Fo1/0/1
speed 40000
exit
!
interface Fo1/0/2
speed 40000
exit
!
interface Fo1/1/1
speed 40000
exit
!
interface Fo1/1/2
speed 40000
exit
!
interface port-channel 1
description "Enlace-entre-Switches-MLAG"
spanning-tree disable
vpc peer-link
exit
!
interface port-channel 10
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 10
exit
!
interface port-channel 11
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 11
exit
!
interface port-channel 13
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 13
exit
!
interface port-channel 14
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 14
exit
!
interface port-channel 15
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 15
exit
!
interface port-channel 16
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 16
exit
!
interface port-channel 17
switchport mode trunk
switchport trunk native vlan 330
switchport trunk allowed vlan 330,335
vpc 17
exit
!
interface port-channel 18
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
vpc 18
exit
!
interface port-channel 19
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
vpc 19
exit
!
interface port-channel 20
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,610,612,1000
vpc 20
exit
!
interface port-channel 21
switchport mode trunk
switchport trunk allowed vlan 2,300,310,335,510,555,610-612,1000
vpc 21
exit
interface vlan 2 2
vrrp 20
vrrp 20 mode
vrrp 20 ip 172.16.4.91
vrrp 20 priority 200
vrrp 20 accept-mode
exit
interface vlan 300 3
vrrp 251
vrrp 251 mode
vrrp 251 ip 172.26.95.1
vrrp 251 priority 200
vrrp 251 accept-mode
exit
interface vlan 310 4
vrrp 252
vrrp 252 mode
vrrp 252 ip 172.26.80.1
vrrp 252 priority 200
vrrp 252 accept-mode
exit
interface vlan 330 5
vrrp 250
vrrp 250 mode
vrrp 250 ip 192.168.230.1
vrrp 250 priority 200
vrrp 250 accept-mode
exit
interface vlan 510 6
vrrp 253
vrrp 253 mode
vrrp 253 ip 172.26.144.1
vrrp 253 priority 200
vrrp 253 accept-mode
exit
interface vlan 555 7
vrrp 254
vrrp 254 mode
vrrp 254 ip 172.26.194.91
vrrp 254 priority 200
vrrp 254 accept-mode
exit
snmp-server engineid local 800002a203f8b15662a650
feature vpc
vpc domain 2
role priority 10
peer-keepalive enable
peer-keepalive destination 192.168.71.18 source 192.168.71.17
peer detection enable
exit
exit
configure
vlan 2,300,310,330,335,510,555,610-612,1000,3000
exit
vlan 2
name "Red actual"
exit
vlan 310
name "Tel.-Centro"
exit
vlan 510
name "PCs-Centro"
exit
vlan 555
name "administracion"
exit
vlan 610
name "nav-guest"
exit
vlan 611
name "V611"
exit
vlan 612
name "V612"
exit
vlan 1000
name "v1000-HMC"
exit
hostname "CentroSW2"
slot 1/0 5 ! Dell Networking N4064F
slot 1/1 6 ! Dell QSFP Card
stack
member 1 4 ! N4064F
exit
ip http timeout-policy idle 3600 life 86400
ip access-list admin
exit
ip routing
interface vlan 1
ip address dhcp
exit
interface vlan 2
ip address 172.16.4.110 255.255.0.0
exit
interface vlan 300
ip address 172.26.95.3 255.255.255.0
exit
interface vlan 310
ip address 172.26.80.3 255.255.255.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 330
ip address 192.168.230.3 255.255.255.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 510
ip address 172.26.144.3 255.255.240.0
ip helper-address 172.16.7.14 domain
ip helper-address 172.16.7.21 domain
ip helper-address 172.16.7.14 dhcp
ip helper-address 172.16.7.21 dhcp
exit
interface vlan 555
ip address 172.26.194.93 255.255.252.0
exit
interface vlan 3000
ip address 192.168.71.18 255.255.255.252
exit
ip route 0.0.0.0 0.0.0.0 172.16.4.1
ip route 172.26.10.0 255.255.255.0 172.16.4.22 5
ip route 172.26.64.0 255.255.252.0 172.16.4.90
ip route 172.26.79.0 255.255.255.0 172.16.4.90
ip route 172.26.128.0 255.255.240.0 172.16.4.90
username "incristian" password c3670758e087fc72a9ffb44f66c1e3e4 privilege 15 encrypted
spanning-tree mode mst
spanning-tree priority 28672
ip vrrp
dhcp l2relay
!
interface Te1/0/1
channel-group 10 mode on
description " MLAG partner link 10"
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/2
channel-group 11 mode on
description "mlag partner link"
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/3
channel-group 13 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/4
channel-group 14 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/5
channel-group 15 mode on
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/6
channel-group 16 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,310,510,555,610,612
exit
!
interface Te1/0/7
channel-group 17 mode on
switchport mode trunk
switchport trunk native vlan 330
switchport trunk allowed vlan 330,335
exit
!
interface Te1/0/11
channel-group 18 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
exit
!
interface Te1/0/12
channel-group 19 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
exit
!
interface Te1/0/44
channel-group 20 mode on
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,610,612,1000
exit
!
interface Te1/0/46
channel-group 21 mode on
switchport mode trunk
switchport trunk allowed vlan 2,300,310,335,510,555,610-612,1000
exit
!
interface Te1/0/47
channel-group 1 mode active
description "EnlACEs-entre-switches-MLAG"
spanning-tree disable
switchport mode trunk
udld enable
udld port aggressive
exit
!
interface Te1/0/48
channel-group 1 mode active
description "EnlACEs-entre-switches-MLAG"
spanning-tree disable
switchport mode trunk
udld enable
udld port aggressive
exit
!
interface Fo1/0/1
speed 40000
exit
!
interface Fo1/0/2
speed 40000
exit
!
interface Fo1/1/1
speed 40000
exit
!
interface Fo1/1/2
speed 40000
exit
!
interface port-channel 1
description "Enlace-entre-Switches-MLAG"
switchport mode trunk
vpc peer-link
exit
!
interface port-channel 10
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 10
exit
!
interface port-channel 11
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 11
exit
!
interface port-channel 13
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 13
exit
!
interface port-channel 14
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 14
exit
!
interface port-channel 15
switchport mode trunk
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 15
exit
!
interface port-channel 16
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,310,510,555,610,612
vpc 16
exit
!
interface port-channel 17
switchport mode trunk
switchport trunk native vlan 330
switchport trunk allowed vlan 330,335
vpc 17
exit
!
interface port-channel 18
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
vpc 18
exit
!
interface port-channel 19
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,300,310,510,555,610-612
vpc 19
exit
!
interface port-channel 20
switchport mode trunk
switchport trunk native vlan 2
switchport trunk allowed vlan 2,610,612,1000
vpc 20
exit
!
interface port-channel 21
switchport mode trunk
switchport trunk allowed vlan 2,300,310,335,510,555,610-612,1000
vpc 21
exit
interface vlan 2 2
vrrp 20
vrrp 20 mode
vrrp 20 ip 172.16.4.91
vrrp 20 priority 200
vrrp 20 accept-mode
exit
interface vlan 300 3
vrrp 251
vrrp 251 mode
vrrp 251 ip 172.26.95.1
vrrp 251 priority 195
vrrp 251 accept-mode
exit
interface vlan 310 4
vrrp 252
vrrp 252 mode
vrrp 252 ip 172.26.80.1
vrrp 252 priority 195
vrrp 252 accept-mode
exit
interface vlan 330 5
vrrp 250
vrrp 250 mode
vrrp 250 ip 192.168.230.1
vrrp 250 priority 195
vrrp 250 accept-mode
exit
interface vlan 510 6
vrrp 253
vrrp 253 mode
vrrp 253 ip 172.26.144.1
vrrp 253 priority 195
vrrp 253 accept-mode
exit
interface vlan 555 7
vrrp 254
vrrp 254 mode
vrrp 254 ip 172.26.194.91
vrrp 254 priority 195
vrrp 254 accept-mode
exit
snmp-server engineid local 800002a203f8b15662a650
feature vpc
vpc domain 2
role priority 20
peer-keepalive enable
peer-keepalive destination 192.168.71.17 source 192.168.71.18
peer detection enable
exit
exit