Re: MultiLayer Switch Redundancy

d.nicholls18 · ‎04-28-2019

Hi All,

I have been able to configure spanning tree and a port channel to help with redundancy. The issue I am facing now is that when I switch the left side multilayer switch off the right side will not allow pings from the clients to the routers.

All my VLANS are set on my router including ACL's. I have compared the configs of both switches and they look the same (to me anyway). Spanning tree takes a while but does eventually kick in. The left switch would always be primary due to its fibre connections but as the router will not accept any additional fibre connections the right side is set as a gb-ethernet.

Thanks for any help provided :) The packet tracer file is attached. If you do not have packet-tracer I would still appreciate help from ideas and troubleshooting.

Mohamed Alhenawy · ‎04-28-2019

Hello dear,

What is the configuration applying on the interface which connect to router and what is the default gateway

d.nicholls18 · ‎04-28-2019

Hi,

I will paste it below :)

version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname RouterStone
!
!
!
enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
!
!
ip dhcp excluded-address 10.0.0.254
ip dhcp excluded-address 10.0.1.0
ip dhcp excluded-address 10.0.2.126
ip dhcp excluded-address 10.0.2.254
ip dhcp excluded-address 10.0.3.62
ip dhcp excluded-address 10.0.3.94
ip dhcp excluded-address 10.0.3.126
ip dhcp excluded-address 10.0.3.142
ip dhcp excluded-address 10.0.3.158
ip dhcp excluded-address 10.0.3.174
ip dhcp excluded-address 10.0.3.190
ip dhcp excluded-address 10.0.3.198
!
ip dhcp pool medical_equipment
network 10.0.0.0 255.255.255.0
default-router 10.0.0.254
ip dhcp pool VOIP
network 10.0.1.0 255.255.255.0
default-router 10.0.1.254
ip dhcp pool admin_staff
network 10.0.2.0 255.255.255.128
default-router 10.0.2.126
ip dhcp pool ip_cameras
network 10.0.2.128 255.255.255.128
default-router 10.0.2.254
ip dhcp pool doctors
network 10.0.3.0 255.255.255.192
default-router 10.0.3.62
ip dhcp pool printers
network 10.0.3.64 255.255.255.224
default-router 10.0.3.94
ip dhcp pool fire_systems
network 10.0.3.96 255.255.255.224
default-router 10.0.3.126
ip dhcp pool security_staff
network 10.0.3.128 255.255.255.240
default-router 10.0.3.142
ip dhcp pool mgmt_devices
network 10.0.3.144 255.255.255.240
default-router 10.0.3.158
ip dhcp pool video_conference
network 10.0.3.160 255.255.255.240
default-router 10.0.3.174
ip dhcp pool servers
network 10.0.3.176 255.255.255.240
default-router 10.0.3.190
ip dhcp pool help_kiosk
network 10.0.3.192 255.255.255.248
default-router 10.0.3.198
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX15241I5B-
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0/0
no ip address
!
interface GigabitEthernet0/0/0.10
description medical_equipment
encapsulation dot1Q 10
ip address 10.0.0.254 255.255.255.0
ip access-group 1 out
!
interface GigabitEthernet0/0/0.30
description admin_staff
encapsulation dot1Q 30
ip address 10.0.2.126 255.255.255.128
!
interface GigabitEthernet0/0/0.40
description ip_cameras
encapsulation dot1Q 40
ip address 10.0.2.254 255.255.255.128
ip access-group 2 out
!
interface GigabitEthernet0/0/0.50
description doctors
encapsulation dot1Q 50
ip address 10.0.3.62 255.255.255.192
!
interface GigabitEthernet0/0/0.60
description printers
encapsulation dot1Q 60
ip address 10.0.3.94 255.255.255.224
ip access-group 3 out
!
interface GigabitEthernet0/0/0.70
description fire_systems
encapsulation dot1Q 70
ip address 10.0.3.126 255.255.255.224
ip access-group 4 out
!
interface GigabitEthernet0/0/0.80
description security_staff
encapsulation dot1Q 80
ip address 10.0.3.142 255.255.255.240
!
interface GigabitEthernet0/0/0.90
description video_conference
encapsulation dot1Q 100
ip address 10.0.3.174 255.255.255.240
!
interface GigabitEthernet0/0/0.110
description servers
encapsulation dot1Q 110
ip address 10.0.3.190 255.255.255.240
ip access-group 5 out
!
interface GigabitEthernet0/0/0.120
description help_kiosk
encapsulation dot1Q 120
ip address 10.0.3.198 255.255.255.248
!
interface GigabitEthernet0/0/0.150
description VOIP
encapsulation dot1Q 150
ip address 10.0.1.254 255.255.255.0
!
interface Serial0/1/0
ip address 172.16.5.1 255.255.255.252
clock rate 2000000
!
interface Serial0/1/1
ip address 172.16.5.5 255.255.255.252
clock rate 2000000
!
interface Vlan1
no ip address
shutdown
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
passive-interface GigabitEthernet0/0/0
network 172.16.5.4 0.0.0.3 area 0
network 172.16.5.0 0.0.0.3 area 0
network 10.0.0.0 0.0.3.255 area 0
!
ip classless
!
ip flow-export version 9
!
!
access-list 1 permit 10.0.3.0 0.0.0.63
access-list 2 permit 10.0.3.128 0.0.0.15
access-list 3 permit 10.0.2.0 0.0.0.127
access-list 3 permit 10.0.3.0 0.0.0.63
access-list 3 permit 10.0.3.128 0.0.0.15
access-list 4 permit 10.0.3.128 0.0.0.15
access-list 5 permit 10.0.3.192 0.0.0.7
access-list 6 permit 172.16.5.4 0.0.0.3
access-list 7 permit 172.16.5.0 0.0.0.3
!
no cdp run
!
!
!
!
!
!
line con 0
password cisco
logging synchronous
login
!
line aux 0
password cisco
logging synchronous
login
!
line vty 0 4
password cisco
logging synchronous
login
!
!
!
end

Mohamed Alhenawy · ‎04-28-2019

Hello Dear :)

Have a good day

All thing is going well, can you share the # show standby output and port-channel mood which you used it.

the Scenarios :

IF you are using HSRP @ you will grouping them with one number like this

#interface xx

# Ip address 10.x.x.x 255.x.x.x

# Stand by 10 priority xx [ highest one will be active - lowest one will be stand by]

# stand by 10 Ip 10.x.x.x [ default gateway for both ]

also same thing in the another Mls

d.nicholls18 · ‎04-29-2019

Hi Mohamed,

I do apologise but I do not understand what your reply.
My setup is router on a stick. This is the first time I have ventured into this territory.

RouterStone#show standby brief
P indicates configured to preempt.
|
Interface Grp Pri P State Active Standby Virtual IP

The results are the same for both MutliLayer Switches.