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Juniper vSRX 2台で、仮想的に2拠点をVPLSで接続してみる

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概要

vSRXをVMware Workstation上に2台デプロイして、それぞれを拠点ゲートウェイとします。各拠点にはそれぞれ1つのセグメント(VMNet11とVMNet12)を接続し、VPLSで同一ネットワークとして接続することで、各拠点の仮想マシン間でPINGできるとこまで構築してみます。本番環境だとCE側(ge-0/0/0)はスイッチを接続していてVLAN Trunkとしていますが、今回は1つのセグメントを接続しているだけなのでVLAN設定もしていません。

WS000000.JPG

前提条件

No 項目
1 JUNOSバージョン 20.1R1.11
2 仮想環境 VMware Workstation 15
3 ホストOS Windows 10

全体の流れ

おおまかに下記の流れで設定していきます

  1. インタフェース設定
  2. OSPF設定
  3. MPLS設定
  4. VPLS設定

vSRX02の設定

インタフェース設定

  • ループバックインタフェース
# set interfaces lo0 unit 0 family inet address 1.1.1.2/32
  • MPLSインタフェース
# delete interfaces ge-0/0/1
# set interfaces ge-0/0/1 unit 0 family inet address 192.168.10.2/24
  • ルータID
# set routing-options router-id 1.1.1.2

OSPFの設定

  • シングルエリアのOSPFを設定します
# set protocol ospf area 0 interface ge-0/0/1.0
# set protocol ospf area 0 interface lo0.0

MPLSの設定

  • インタフェースにMPLSプロトコルを設定します
# set interfaces ge-0/0/1 unit 0 family mpls
# set protocols mpls interface ge-0/0/1
# set protocols mpls no-cspf
  • シグナリングプロトコルにRSVPを設定します
# set protocols rsvp interface ge-0/0/1.0
# set protocols rsvp interface lo0.0
  • LSPを設定します(テスト用なのでパスは1つだけ設定)
# set protocols mpls label-switched-path vSRX02-vSRX01 to 1.1.1.1
# set protocols mpls label-switched-path vSRX02-vSRX01 primary MAIN
# set protocols mpls path MAIN 1.1.1.1 strict

VPLSの設定

! LDPの設定
# set protocols ldp interface ge-0/0/1.0
# set protocols ldp interface lo0.0

! Routing Instanceの設定
# set routing-instances VPLS1 instance-type vpls
# set routing-instances VPLS1 interface ge-0/0/0.0
# set routing-instances VPLS1 protocols vpls no-tunnel-services
# set routing-instances VPLS1 protocols vpls vpls-id 1
# set routing-instances VPLS1 protocols vpls neighbor 1.1.1.1

! VPLSをインタフェースに適用
# set interfaces ge-0/0/0 encapsulation ethernet-vpls
# set interfaces ge-0/0/0 unit 0 family vpls

ここまででVPLSの設定が完了しました。

vsrx02のConfig

最終的に下記Configになってるはず

admin@vsrx02# run show configuration | display set | no-more
set version 20200319.130545_builder.r1095278
set system host-name vsrx02
set system root-authentication encrypted-password "xxxxx"
set system login user admin uid 2000
set system login user admin class super-user
set system login user admin authentication encrypted-password "xxxxx"
set system services ssh root-login allow
set system services netconf ssh
set system services rest http port 3000
set system services rest enable-explorer
set system services web-management http interface fxp0.0
set system time-zone Asia/Tokyo
set system name-server 8.8.8.8
set system name-server 8.8.4.4
set system syslog user * any emergency
set system syslog file messages any any
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set system license autoupdate url https://ae1.juniper.net/junos/key_retrieval
set system ntp server 133.243.238.243
set security forwarding-options family mpls mode packet-based
set interfaces ge-0/0/0 encapsulation ethernet-vpls
set interfaces ge-0/0/0 unit 0 family vpls
set interfaces ge-0/0/1 unit 0 family inet address 192.168.10.2/24
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces fxp0 unit 0 family inet dhcp
set interfaces lo0 unit 0 family inet address 1.1.1.2/32
set routing-instances VPLS1 protocols vpls no-tunnel-services
set routing-instances VPLS1 protocols vpls vpls-id 1
set routing-instances VPLS1 protocols vpls neighbor 1.1.1.1
set routing-instances VPLS1 interface ge-0/0/0.0
set routing-instances VPLS1 instance-type vpls
set protocols ospf area 0.0.0.0 interface ge-0/0/1.0
set protocols ospf area 0.0.0.0 interface lo0.0
set protocols ldp interface ge-0/0/1.0
set protocols ldp interface lo0.0
set protocols mpls no-cspf
set protocols mpls label-switched-path vSRX02-vSRX01 to 1.1.1.1
set protocols mpls label-switched-path vSRX02-vSRX01 primary MAIN
set protocols mpls path MAIN 1.1.1.1
set protocols mpls path MAIN 192.168.10.1 strict
set protocols mpls interface ge-0/0/1.0
set protocols rsvp interface ge-0/0/1.0
set protocols rsvp interface lo0.0
set routing-options router-id 1.1.1.2

対向ルータ(vSRX01)の設定

vSRX02と内容が同じなのでConfigだけ記載しておきます

vsrx01のConfig

admin@vsrx01# run show configuration | display set | no-more
set version 20200319.130545_builder.r1095278
set system host-name vsrx01
set system root-authentication encrypted-password "xxxxx"
set system login user admin uid 2000
set system login user admin class super-user
set system login user admin authentication encrypted-password "xxxxx"
set system services ssh root-login allow
set system services netconf ssh
set system services rest http port 3000
set system services rest enable-explorer
set system services web-management http interface fxp0.0
set system time-zone Asia/Tokyo
set system name-server 8.8.8.8
set system name-server 8.8.4.4
set system syslog user * any emergency
set system syslog file messages any any
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set system license autoupdate url https://ae1.juniper.net/junos/key_retrieval
set system ntp server 133.243.238.243
set security forwarding-options family mpls mode packet-based
set interfaces ge-0/0/0 encapsulation ethernet-vpls
set interfaces ge-0/0/0 unit 0 family vpls
set interfaces ge-0/0/1 unit 0 family inet address 192.168.10.1/24
set interfaces ge-0/0/1 unit 0 family mpls
set interfaces fxp0 unit 0 family inet dhcp
set interfaces lo0 unit 0 family inet address 1.1.1.1/32
set routing-instances VPLS1 protocols vpls no-tunnel-services
set routing-instances VPLS1 protocols vpls vpls-id 1
set routing-instances VPLS1 protocols vpls neighbor 1.1.1.2
set routing-instances VPLS1 interface ge-0/0/0.0
set routing-instances VPLS1 instance-type vpls
set protocols ospf area 0.0.0.0 interface ge-0/0/1.0
set protocols ospf area 0.0.0.0 interface lo0.0
set protocols ldp interface ge-0/0/1.0
set protocols ldp interface lo0.0
set protocols mpls no-cspf
set protocols mpls label-switched-path vSRX01-vSRX02 to 1.1.1.2
set protocols mpls label-switched-path vSRX01-vSRX02 primary MAIN
set protocols mpls path MAIN 192.168.10.2 strict
set protocols mpls interface ge-0/0/1.0
set protocols rsvp interface ge-0/0/1.0
set protocols rsvp interface lo0.0
set routing-options router-id 1.1.1.1

通信確認

  • vSRX01 -> vSRX02
    WS000001.JPG

  • vSRX02 -> vSRX01
    WS000002.JPG

VPLSコネクションのステータス確認

通信が成功した時のVPLSステータスを確認します

admin@vsrx02# run show vpls connections
Layer-2 VPN connections:

Instance: VPLS1
  VPLS-id: 1
    Neighbor                  Type  St     Time last up          # Up trans
    1.1.1.1(vpls-id 1)        rmt   Up     May  6 14:29:24 2020           1
      Remote PE: 1.1.1.1, Negotiated control-word: No
      Incoming label: 262145, Outgoing label: 262145
      Negotiated PW status TLV: No
      Local interface: lsi.1048832, Status: Up, Encapsulation: ETHERNET
        Description: Intf - vpls VPLS1 neighbor 1.1.1.1 vpls-id 1
      Flow Label Transmit: No, Flow Label Receive: No

VPLSコネクションが失敗した時のエビデンス

LSPが確立されているところまで確認

admin@vsrx01# run show mpls lsp
Ingress LSP: 1 sessions
To              From            State Rt P     ActivePath       LSPname
1.1.1.2         1.1.1.1         Up     0 *     MAIN             vSRX01-vSRX02
Total 1 displayed, Up 1, Down 0

Egress LSP: 1 sessions
To              From            State   Rt Style Labelin Labelout LSPname
1.1.1.1         1.1.1.2         Up       0  1 FF       3        - vSRX02-vSRX01
Total 1 displayed, Up 1, Down 0

Transit LSP: 0 sessions
Total 0 displayed, Up 0, Down 0

VPLSの設定を追加すると、VPLSコネクションのステータスが”ST”になってました。
この時、vsrx01は"ST"ですがvsrx02側でVPLSコネクションを確認すると"UP"と表示されました。

admin@vsrx01# run show vpls connections
Layer-2 VPN connections:

Instance: VPLS1
  VPLS-id: 1
    Neighbor                  Type  St     Time last up          # Up trans
    1.1.1.2(vpls-id 1)        rmt   ST

その後、いろいろと設定をいじったりしましたが改善しませんでした。当初、vsrx01はJUNOSバージョンが12.xと古いバージョンだったので、vsrx02のインストーラで再デプロイして、まったく同じConfigを投入することで改善しました。

今回はここまで。

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