Описание

Два WLC резервируют себя через протокол VRRP, интерфейс в сторону точек доступа подключен к коммутатору.

Резервирование и организация Uplink не рассматриваются в данной статье. 

Схема включения

Для корректной работы точек при смене мастерства на версии 1.30.6, необходимо наличие  соответствующей версии прошивки для каждой из точек доступа на WLC.

При отсутствии прошивки на WLC, могут возникнуть проблемы при подключении точек в случае смены мастерства.

Задача

Организовать резервирование контроллера WLC.

Решение

Настройка будет выполнена на базе заводской конфигурации (Factory). Интерфейс gi 1/0/1 смотрит в сторону Uplink, gi 1/0/2 — в сторону точек доступа.

Для решения поставленной задачи на каждом WLC необходимо:

На клиентских интерфейсах, где включен vrrp, необходимо включить:

  vrrp timers garp refresh 60

Данная команда определяет интервал, по истечении которого будет происходить периодическая отправка Gratuituous ARP-сообщений, пока маршрутизатор находится в состоянии Master.

Настройку нужно включать, если клиентский трафик туннелируется.

Адресация:

ИнтерфейсVLANWLC-1 IPWLC-2 IPVRRP IPОписание
Birdge 12449192.168.1.2/24192.168.1.3/24192.168.1.1/32Интерфейс для сети управления
Bridge 33192.168.2.2/24192.168.2.3/24192.168.2.1/32Интерфейс для клиентов Wi-Fi

Порты и протоколы, для которых нужно настроить Firewall:

СервисПротоколПортОписание
softgre-controllerTCP1337Используется для синхронизации softgre-туннелей
crypto-syncTCP873Используется для синхронизации сертификатов и состояния ТД
VRRPVRRP-Используется для резервирования 

Пример настройки WLC-1

Подключаемся к WLC и переходим в режим конфигурирования:

wlc# config

Меняем имя устройства:

hostname WLC-1

Создаем vlan 2449:

vlan 2449
  force-up
exit

Настраиваем интерфейс gi 1/0/2 для приема тегированного трафика в VLAN 3 и 2449:

interface gigabitethernet 1/0/2
  mode switchport
  switchport mode trunk
  switchport trunk allowed vlan add 3,2449
exit

Создаем object-group для настройки Firewall:

object-group service journal_sync
  port-range 5432
exit
object-group service sync
  port-range 873
exit
object-group service softgre_controller
  port-range 1337
exit

Меняем адресацию и настраиваем VRRP на Bridge:

no bridge 1
no bridge 3

bridge 1
  vlan 2449
  security-zone trusted
  ip address 192.168.1.2/24
  vrrp priority 120
  vrrp id 1
  vrrp ip 192.168.1.1/32
  vrrp group 1
  vrrp preempt disable
  vrrp
  no spanning-tree
  enable
exit 
bridge 3
  vlan 3
  mtu 1458
  security-zone users
  ip address 192.168.2.2/24
  vrrp priority 120 
  vrrp id 3
  vrrp ip 192.168.2.1/32
  vrrp group 1
  vrrp preempt disable
  vrrp timers garp refresh 60
  vrrp
  no spanning-tree
  enable
exit

Указываем адресацию резервируемых контроллеров и назначаем им группу:

ip failover
  local-address 192.168.1.2
  remote-address 192.168.1.3
  vrrp-group 1
exit

Настраиваем Crypto-Sync для синхронизации сертификатов:

crypto-sync
  remote-delete
  enable
exit

Настраиваем Softgre-Controller для синхронизации туннелей SoftGRE:

softgre-controller
  failover
exit

Настраиваем WLC для синхронизации точек доступа и их ПО в директории system:access-points-firmwares

wlc
  failover
exit

Настраиваем правила Firewall, разрешаем протокол VRRP и порты для синхронизации туннелей и сертификатов:

security zone-pair trusted self
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 12
    action permit
    match protocol tcp
    match destination-port object-group softgre_controller
    enable
  exit  
  rule 13
    action permit
    match protocol tcp
    match destination-port object-group sync
    enable
  exit
exit 
security zone-pair users self
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
exit

Настраиваем DHCP-сервер:

no ip dhcp-server pool users-pool
no ip dhcp-server pool ap-pool

ip dhcp-server pool ap-pool
  network 192.168.1.0/24
  address-range 192.168.1.4-192.168.1.254
  default-router 192.168.1.1
  dns-server 192.168.1.1
  option 42 ip-address 192.168.1.1
  vendor-specific
    suboption 12 ascii-text "192.168.1.1"
    suboption 15 ascii-text "https://192.168.1.1:8043"
  exit
exit
ip dhcp-server pool users-pool
  network 192.168.2.0/24
  address-range 192.168.2.4-192.168.2.254
  default-router 192.168.2.1
  dns-server 192.168.2.1
exit

Настраиваем DHCP Failover:

ip dhcp-server failover
  mode active-standby
  enable
exit

Настраиваем NTP-сервер. Время на устройствах должно быть синхронизировано для корректной работы синхронизации:

no ntp broadcast-client enable 

ntp enable
ntp server 100.110.0.65
exit

Создаем пользователя в локальном Radius-сервере:

radius-server local
  domain default
    user test
      password ascii-text 12345678
    exit
  exit
exit

Применяем и подтверждаем конфигурацию:

wlc-1# commit 
wlc-1# confirm

Полная конфигурация WLC-1


#!/usr/bin/clish
#270
#1.30.x
#2024-11-22
#05:32:21
hostname WLC-1

object-group service airtune
  port-range 8099
exit
object-group service dhcp_client
  port-range 68
exit
object-group service dhcp_server
  port-range 67
exit
object-group service dns
  port-range 53
exit
object-group service netconf
  port-range 830
exit
object-group service ntp
  port-range 123
exit
object-group service radius_auth
  port-range 1812
exit
object-group service sa
  port-range 8043-8044
exit
object-group service ssh
  port-range 22
exit
object-group service journal_sync
  port-range 5432
exit
object-group service sync
  port-range 873
exit
object-group service softgre_controller
  port-range 1337
exit

syslog max-files 3
syslog file-size 512
syslog file tmpsys:syslog/default
  severity info
exit

radius-server local
  nas ap
    key ascii-text encrypted 8CB5107EA7005AFF
    network 192.168.1.0/24
  exit
  nas local
    key ascii-text encrypted 8CB5107EA7005AFF
    network 127.0.0.1/32
  exit
  domain default
    user test
      password ascii-text encrypted CDE65039E5591FA3
    exit
  exit
  virtual-server default
    enable
  exit
  enable
exit
radius-server host 127.0.0.1
  key ascii-text encrypted 8CB5107EA7005AFF
exit
aaa radius-profile default_radius
  radius-server host 127.0.0.1
exit

boot host auto-config
boot host auto-update

vlan 3
  force-up
exit
vlan 2449
  force-up
exit
vlan 2
exit

no spanning-tree

domain lookup enable

security zone trusted
exit
security zone untrusted
exit
security zone users
exit

bridge 1
  vlan 2449
  security-zone trusted
  ip address 192.168.1.2/24
  vrrp id 1
  vrrp ip 192.168.1.1/32
  vrrp priority 120
  vrrp group 1
  vrrp preempt disable
  vrrp
  no spanning-tree
  enable
exit
bridge 2
  vlan 2
  security-zone untrusted
  ip address dhcp
  no spanning-tree
  enable
exit
bridge 3
  vlan 3
  mtu 1458
  security-zone users
  ip address 192.168.2.2/24
  vrrp id 3
  vrrp ip 192.168.2.1/32
  vrrp priority 120
  vrrp group 1
  vrrp preempt disable
  vrrp timers garp refresh 60
  vrrp
  no spanning-tree
  enable
exit

interface gigabitethernet 1/0/1
  mode switchport
  switchport access vlan 2
exit
interface gigabitethernet 1/0/2
  mode switchport
  switchport mode trunk
  switchport trunk allowed vlan add 3,2449
exit
interface gigabitethernet 1/0/3
  mode switchport
exit
interface gigabitethernet 1/0/4
  mode switchport
exit
interface tengigabitethernet 1/0/1
  mode switchport
  switchport access vlan 2
exit
interface tengigabitethernet 1/0/2
  mode switchport
exit

tunnel softgre 1
  mode data
  local address 192.168.1.1
  default-profile
  enable
exit

ip failover
  local-address 192.168.1.2
  remote-address 192.168.1.3
  vrrp-group 1
exit

security zone-pair trusted self
  rule 10
    action permit
    match protocol tcp
    match destination-port object-group ssh
    enable
  exit
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 12
    action permit
    match protocol tcp
    match destination-port object-group softgre_controller
    enable
  exit
  rule 13
    action permit
    match protocol tcp
    match destination-port object-group sync
    enable
  exit
  rule 20
    action permit
    match protocol icmp
    enable
  exit
  rule 30
    action permit
    match protocol udp
    match source-port object-group dhcp_client
    match destination-port object-group dhcp_server
    enable
  exit
  rule 40
    action permit
    match protocol udp
    match destination-port object-group ntp
    enable
  exit
  rule 50
    action permit
    match protocol tcp
    match destination-port object-group dns
    enable
  exit
  rule 60
    action permit
    match protocol udp
    match destination-port object-group dns
    enable
  exit
  rule 70
    action permit
    match protocol tcp
    match destination-port object-group netconf
    enable
  exit
  rule 80
    action permit
    match protocol tcp
    match destination-port object-group sa
    enable
  exit
  rule 90
    action permit
    match protocol udp
    match destination-port object-group radius_auth
    enable
  exit
  rule 100
    action permit
    match protocol gre
    enable
  exit
  rule 110
    action permit
    match protocol tcp
    match destination-port object-group airtune
    enable
  exit
exit
security zone-pair trusted trusted
  rule 1
    action permit
    enable
  exit
exit
security zone-pair trusted untrusted
  rule 1
    action permit
    enable
  exit
exit
security zone-pair untrusted self
  rule 1
    action permit
    match protocol udp
    match source-port object-group dhcp_server
    match destination-port object-group dhcp_client
    enable
  exit
exit
security zone-pair users self
  rule 10
    action permit
    match protocol icmp
    enable
  exit
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 20
    action permit
    match protocol udp
    match source-port object-group dhcp_client
    match destination-port object-group dhcp_server
    enable
  exit
  rule 30
    action permit
    match protocol tcp
    match destination-port object-group dns
    enable
  exit
  rule 40
    action permit
    match protocol udp
    match destination-port object-group dns
    enable
  exit
exit
security zone-pair users untrusted
  rule 1
    action permit
    enable
  exit
exit

security passwords default-expired

nat source
  ruleset factory
    to zone untrusted
    rule 10
      description "replace 'source ip' by outgoing interface ip address"
      action source-nat interface
      enable
    exit
  exit
exit

ip dhcp-server
ip dhcp-server pool ap-pool
  network 192.168.1.0/24
  address-range 192.168.1.4-192.168.1.254
  default-router 192.168.1.1
  dns-server 192.168.1.1
  option 42 ip-address 192.168.1.1
  vendor-specific
    suboption 12 ascii-text "192.168.1.1"
    suboption 15 ascii-text "https://192.168.1.1:8043"
  exit
exit
ip dhcp-server pool users-pool
  network 192.168.2.0/24
  address-range 192.168.2.4-192.168.2.254
  default-router 192.168.2.1
  dns-server 192.168.2.1
exit
ip dhcp-server failover
  mode active-standby
  enable
exit

softgre-controller
  nas-ip-address 127.0.0.1
  failover
  data-tunnel configuration wlc
  aaa radius-profile default_radius
  keepalive-disable
  service-vlan add 3
  enable
exit

wlc
  outside-address 192.168.1.1
  service-activator
    aps join auto
  exit
  airtune
    enable
  exit
  failover
  ap-location default-location
    description "default-location"
    mode tunnel
    ap-profile default-ap
    ssid-profile default-ssid
  exit
  ssid-profile default-ssid
    description "default-ssid"
    ssid "default-ssid"
    radius-profile default-radius
    vlan-id 3
    security-mode WPA2_1X
    802.11kv
    band 2g
    band 5g
    enable
  exit
  ap-profile default-ap
    password ascii-text encrypted 8CB5107EA7005AFF
  exit
  radius-profile default-radius
    auth-address 192.168.1.1
    auth-password ascii-text encrypted 8CB5107EA7005AFF
    domain default
  exit
  ip-pool default-ip-pool
    description "default-ip-pool"
    ap-location default-location
  exit
  enable
exit

ip ssh server

ntp enable
ntp server 100.110.0.65
exit

crypto-sync
  remote-delete
  enable
exit


Пример настройки WLC-2

Подключаемся к WLC и переходим в режим конфигурирования:

wlc# config

Меняем имя устройства:

hostname WLC-2

Создаем vlan 2449:

vlan 2449
  force-up
exit

Настраиваем интерфейс gi 1/0/2 для приема тегированного трафика в VLAN 3 и 2449:

interface gigabitethernet 1/0/2
  mode switchport
  switchport mode trunk
  switchport trunk allowed vlan add 3,2449
exit

Создаем object-group для настройки Firewall:

object-group service journal_sync
  port-range 5432
exit
object-group service sync
  port-range 873
exit
object-group service softgre_controller
  port-range 1337
exit

Меняем адресацию и настраиваем VRRP на Bridge:

no bridge 1
no bridge 3

bridge 1
  vlan 2449
  security-zone trusted
  ip address 192.168.1.3/24
  vrrp priority 110
  vrrp id 1
  vrrp ip 192.168.1.1/32
  vrrp group 1
  vrrp preempt disable
  vrrp
  no spanning-tree
  enable
exit
bridge 3
  vlan 3
  mtu 1458
  security-zone users
  ip address 192.168.2.3/24
  vrrp priority 110
  vrrp id 3
  vrrp ip 192.168.2.1/32
  vrrp group 1
  vrrp preempt disable
  vrrp timers garp refresh 60
  vrrp
  no spanning-tree
  enable
exit

Указываем адресацию резервируемых контроллеров и назначаем им группу:

ip failover
  local-address 192.168.1.3
  remote-address 192.168.1.2
  vrrp-group 1
exit

Настраиваем Crypto-Sync для синхронизации сертификатов:

crypto-sync
  remote-delete
  enable
exit

Настраиваем Softgre-Controller для синхронизации туннелей SoftGRE:

softgre-controller
  failover
exit

Настраиваем WLC для синхронизации точек доступа и их ПО в директории system:access-points-firmwares:

wlc
  failover
exit

Настраиваем правила Firewall, разрешаем протокол VRRP и порты для синхронизации туннелей и сертификатов:

security zone-pair trusted self    
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 12
    action permit
    match protocol tcp
    match destination-port object-group softgre_controller
    enable
  exit  
  rule 13
    action permit
    match protocol tcp
    match destination-port object-group sync
    enable
  exit
exit 
security zone-pair users self
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
exit

Настраиваем DHCP-сервер:

no ip dhcp-server pool users-pool
no ip dhcp-server pool ap-pool

ip dhcp-server pool ap-pool
  network 192.168.1.0/24
  address-range 192.168.1.4-192.168.1.254
  default-router 192.168.1.1
  dns-server 192.168.1.1
  option 42 ip-address 192.168.1.1
  vendor-specific
    suboption 12 ascii-text "192.168.1.1"
    suboption 15 ascii-text "https://192.168.1.1:8043"
  exit
exit 
ip dhcp-server pool users-pool
  network 192.168.2.0/24
  address-range 192.168.2.4-192.168.2.254
  default-router 192.168.2.1
  dns-server 192.168.2.1
exit

Настраиваем DHCP Failover:

ip dhcp-server failover
  mode active-standby
  enable
exit

Настраиваем NTP-сервер. Время на устройствах должно быть синхронизировано для корректной работы синхронизации:

no ntp broadcast-client enable 

ntp enable
ntp server 100.110.0.65
exit

Создаем пользователя в локальном Radius-сервере:

radius-server local
  domain default
    user test
      password ascii-text 12345678
    exit
  exit
exit


Применяем и подтверждаем конфигурацию:

wlc-2# commit 
wlc-2# confirm

Полная конфигурация WLC-2


#!/usr/bin/clish
#270
#1.30.x
#2024-11-22
#05:32:21
hostname WLC-2

object-group service airtune
  port-range 8099
exit
object-group service dhcp_client
  port-range 68
exit
object-group service dhcp_server
  port-range 67
exit
object-group service dns
  port-range 53
exit
object-group service netconf
  port-range 830
exit
object-group service ntp
  port-range 123
exit
object-group service radius_auth
  port-range 1812
exit
object-group service sa
  port-range 8043-8044
exit
object-group service ssh
  port-range 22
exit
object-group service sync
  port-range 873
exit
object-group service softgre_controller
  port-range 1337
exit

syslog max-files 3
syslog file-size 512
syslog file tmpsys:syslog/default
  severity info
exit

radius-server local
  nas ap
    key ascii-text encrypted 8CB5107EA7005AFF
    network 192.168.1.0/24
  exit
  nas local
    key ascii-text encrypted 8CB5107EA7005AFF
    network 127.0.0.1/32
  exit
  domain default
    user test
      password ascii-text encrypted CDE65039E5591FA3
    exit
  exit
  virtual-server default
    enable
  exit
  enable
exit
radius-server host 127.0.0.1
  key ascii-text encrypted 8CB5107EA7005AFF
exit
aaa radius-profile default_radius
  radius-server host 127.0.0.1
exit

boot host auto-config
boot host auto-update

vlan 3
  force-up
exit
vlan 2449
  force-up
exit
vlan 2
exit

no spanning-tree

domain lookup enable

security zone trusted
exit
security zone untrusted
exit
security zone users
exit

bridge 1
  vlan 2449
  security-zone trusted
  ip address 192.168.1.3/24
  vrrp id 1
  vrrp ip 192.168.1.1/32
  vrrp priority 110
  vrrp group 1
  vrrp preempt disable
  vrrp
  no spanning-tree
  enable
exit
bridge 2
  vlan 2
  security-zone untrusted
  ip address dhcp
  no spanning-tree
  enable
exit
bridge 3
  vlan 3
  mtu 1458
  security-zone users
  ip address 192.168.2.3/24
  vrrp id 3
  vrrp ip 192.168.2.1/32
  vrrp priority 110
  vrrp group 1
  vrrp preempt disable
  vrrp timers garp refresh 60
  vrrp
  no spanning-tree
  enable
exit

interface gigabitethernet 1/0/1
  mode switchport
  switchport access vlan 2
exit
interface gigabitethernet 1/0/2
  mode switchport
  switchport mode trunk
  switchport trunk allowed vlan add 3,2449
exit
interface gigabitethernet 1/0/3
  mode switchport
exit
interface gigabitethernet 1/0/4
  mode switchport
exit
interface tengigabitethernet 1/0/1
  mode switchport
  switchport access vlan 2
exit
interface tengigabitethernet 1/0/2
  mode switchport
exit

tunnel softgre 1
  mode data
  local address 192.168.1.1
  default-profile
  enable
exit

ip failover
  local-address 192.168.1.3
  remote-address 192.168.1.2
  vrrp-group 1
exit

security zone-pair trusted self
  rule 10
    action permit
    match protocol tcp
    match destination-port object-group ssh
    enable
  exit
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 12
    action permit
    match protocol tcp
    match destination-port object-group softgre_controller
    enable
  exit
  rule 13
    action permit
    match protocol tcp
    match destination-port object-group sync
    enable
  exit
  rule 20
    action permit
    match protocol icmp
    enable
  exit
  rule 30
    action permit
    match protocol udp
    match source-port object-group dhcp_client
    match destination-port object-group dhcp_server
    enable
  exit
  rule 40
    action permit
    match protocol udp
    match destination-port object-group ntp
    enable
  exit
  rule 50
    action permit
    match protocol tcp
    match destination-port object-group dns
    enable
  exit
  rule 60
    action permit
    match protocol udp
    match destination-port object-group dns
    enable
  exit
  rule 70
    action permit
    match protocol tcp
    match destination-port object-group netconf
    enable
  exit
  rule 80
    action permit
    match protocol tcp
    match destination-port object-group sa
    enable
  exit
  rule 90
    action permit
    match protocol udp
    match destination-port object-group radius_auth
    enable
  exit
  rule 100
    action permit
    match protocol gre
    enable
  exit
  rule 110
    action permit
    match protocol tcp
    match destination-port object-group airtune
    enable
  exit
exit
security zone-pair trusted trusted
  rule 1
    action permit
    enable
  exit
exit
security zone-pair trusted untrusted
  rule 1
    action permit
    enable
  exit
exit
security zone-pair untrusted self
  rule 1
    action permit
    match protocol udp
    match source-port object-group dhcp_server
    match destination-port object-group dhcp_client
    enable
  exit
exit
security zone-pair users self
  rule 10
    action permit
    match protocol icmp
    enable
  exit
  rule 11
    action permit
    match protocol vrrp
    enable
  exit
  rule 20
    action permit
    match protocol udp
    match source-port object-group dhcp_client
    match destination-port object-group dhcp_server
    enable
  exit
  rule 30
    action permit
    match protocol tcp
    match destination-port object-group dns
    enable
  exit
  rule 40
    action permit
    match protocol udp
    match destination-port object-group dns
    enable
  exit
exit
security zone-pair users untrusted
  rule 1
    action permit
    enable
  exit
exit

security passwords default-expired

nat source
  ruleset factory
    to zone untrusted
    rule 10
      description "replace 'source ip' by outgoing interface ip address"
      action source-nat interface
      enable
    exit
  exit
exit

ip dhcp-server
ip dhcp-server pool ap-pool
  network 192.168.1.0/24
  address-range 192.168.1.4-192.168.1.254
  default-router 192.168.1.1
  dns-server 192.168.1.1
  option 42 ip-address 192.168.1.1
  vendor-specific
    suboption 12 ascii-text "192.168.1.1"
    suboption 15 ascii-text "https://192.168.1.1:8043"
  exit
exit
ip dhcp-server pool users-pool
  network 192.168.2.0/24
  address-range 192.168.2.4-192.168.2.254
  default-router 192.168.2.1
  dns-server 192.168.2.1
exit
ip dhcp-server failover
  mode active-standby
  enable
exit

softgre-controller
  nas-ip-address 127.0.0.1
  failover
  data-tunnel configuration wlc
  aaa radius-profile default_radius
  keepalive-disable
  service-vlan add 3
  enable
exit

wlc
  outside-address 192.168.1.1
  service-activator
    aps join auto
  exit
  airtune
    enable
  exit
  failover
  ap-location default-location
    description "default-location"
    mode tunnel
    ap-profile default-ap
    ssid-profile default-ssid
  exit
  ssid-profile default-ssid
    description "default-ssid"
    ssid "default-ssid"
    radius-profile default-radius
    vlan-id 3
    security-mode WPA2_1X
    802.11kv
    band 2g
    band 5g
    enable
  exit
  ap-profile default-ap
    password ascii-text encrypted 8CB5107EA7005AFF
  exit
  radius-profile default-radius
    auth-address 192.168.1.1
    auth-password ascii-text encrypted 8CB5107EA7005AFF
    domain default
  exit
  ip-pool default-ip-pool
    description "default-ip-pool"
    ap-location default-location
  exit
  enable
exit

ip ssh server

ntp enable
ntp server 100.110.0.65
exit

crypto-sync
  remote-delete
  enable
exit


Проверка

Для проверки синхронизации туннелей, WLC, DHCP можно посмотреть вывод:

wlc-30r# show high-availability state 
VRRP role:                         Backup
AP Tunnels:
    State:                         Successful synchronization
    Last synchronization:          2024-11-25 16:18:18
DHCP option 82 table:
    State:                         Disabled
    Last state change:             --
DHCP server:
VRF:                               --
    State:                         Successful synchronization
    Last synchronization:          2024-11-25 16:18:33
crypto-sync:
    State:                         Successful synchronization
    Last synchronization:          2024-11-25 16:18:34
Firewall:
    State:                         Disabled
    Last state change:             --
WLC:
    State:                         Successful synchronization
    Last synchronization:          2024-11-25 16:18:34
WEB profiles:
    State:                         Disabled