2024-06-16 vJunos-switch BGP-EVPN-VXLAN 機能検証

提供：hkatou_Lab
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先日リリースされた vJunos-switch について、BGP EVPN VXLAN の検証を実施しました。

このページにラボシナリオとして、コンフィグや確認コマンド、疎通確認のポイントなどをまとめています。

目的

レイヤ 3 インターフェース経由で、同一サブネットの通信が可能であること。

host#1 --- vEX#1 --- Routing --- vEX#2 --- host#2
192.168.0.1                                192.168.0.2

検証環境

EVE-NG Community Edition

Juniper vJunos-switch 23.2R1.14

Cisco CSR1000V 17.3.4a

構成図

  • CSR1000V : CSR01,02
  • vJunos-switch : vEX01,02
20240616 vJunos-switch Diagram
20240616 vJunos-switch Diagram

vEX 間はルーティングを動作させて、CSR01 , 02 間で同一セグメント内の通信可否を確認します。

IP アドレッシング

文書用例示アドレス
種別 ネットワーク アドレス ホスト インターフェース ホスト アドレス 備考
グローバルアドレス 203.0.113.0/30 vEX01 ge-0/0/3.0 203.0.113.1/30
vEX02 ge-0/0/3.0 203.0.113.2/30
198.51.100.0/24 vEX01 lo0.0 198.51.100.1/32
vEX02 198.51.100.1/32 198.51.100.2/32
プライベートアドレス 192.0.2.0/24 CSR01 Gi4.10 192.0.2.1/30
Gi4.20 192.0.2.5/30
CSR02 Gi4.10 192.0.2.2/30
Gi4.20 192.0.2.6/30

コンフィギュレーション

ここではプロトコル・ホスト別にコンフィギュレーションを簡単に解説します。

自分でコンフィグを組んでみたい人向けに、デフォルトでは表示しません。

このページのリファレンスに記載した、Juniper や日商エレのサイトを参考に設定してみると良いでしょう。

CSR01 , 02

CSR01 , 02 コンフィグ
プロトコル CSR01 コンフィグ CSR02 コンフィグ 解説
IPv4 
CSR01#show run | s net4

interface GigabitEthernet4
 description vEX01_ge-0/0/0
 no ip address
 negotiation auto
 no mop enabled
 no mop sysid

interface GigabitEthernet4.10
 encapsulation dot1Q 10
 ip address 192.0.2.1 255.255.255.252

interface GigabitEthernet4.20
 encapsulation dot1Q 20
 ip address 192.0.2.5 255.255.255.252

CSR02#show run | s net4

interface GigabitEthernet4
 description vEX02_ge-0/0/0
 no ip address
 negotiation auto
 no mop enabled
 no mop sysid

interface GigabitEthernet4.10
 encapsulation dot1Q 10
 ip address 192.0.2.2 255.255.255.252

interface GigabitEthernet4.20
 encapsulation dot1Q 20
 ip address 192.0.2.6 255.255.255.252

vEX01 , 02

vEX01 , 02 コンフィグ
プロトコル vEX01 コンフィグ vEX01 コンフィグ 解説
インターフェース

(ユーザポート) 

interfaces {
    ge-0/0/0 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 10 {
            family ethernet-switching {
                interface-mode trunk;
                vlan {
                    members v10;
                }
            }
        }
        unit 20 {
            family ethernet-switching {
                interface-mode trunk;
                vlan {
                    members v20;
                }
            }
        }
    }
}

interfaces {
    ge-0/0/0 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 10 {
            family ethernet-switching {
                interface-mode trunk;
                vlan {
                    members v10;
                }
            }
        }
        unit 20 {
            family ethernet-switching {
                interface-mode trunk;
                vlan {
                    members v20;
                }
            }
        }
    }
}
ユーザ収容ポート

通常の trunk 設定に加えて、flexible-vlan tagging と flexible-ethernet-services を設定する

インターフェース

(ネットワークポート) 

interfaces {
    ge-0/0/3 {
        unit 0 {
            family inet {
                address 203.0.113.1/30;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 198.51.100.1/32;
            }
        }
    }
}

interfaces {
    ge-0/0/3 {
        unit 0 {
            family inet {
                address 203.0.113.2/30;
            }
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 198.51.100.2/32;
            }
        }
    }
}
OSPF 接続用
ルーティング

インスタンス 

routing-instances {
    EVPN-1 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        interface ge-0/0/0.10;
        route-distinguisher 198.51.100.1:1;
        vrf-target target:65000:1;
        vlans {
            v10 {
                vlan-id 10;
                ##
                ## Warning: requires 'vxlan' license
                ##
                vxlan {
                    vni 100010;
                }
            }
        }
    }
    EVPN-2 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        interface ge-0/0/0.20;
        route-distinguisher 198.51.100.1:1;
        vrf-target target:65000:1;
        vlans {
            v20 {
                vlan-id 20;
                ##
                ## Warning: requires 'vxlan' license
                ##
                vxlan {
                    vni 100020;
                }
            }
        }
    }
}

routing-instances {
    EVPN-1 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        interface ge-0/0/0.10;
        route-distinguisher 198.51.100.1:1;
        vrf-target target:65000:1;
        vlans {
            v10 {
                vlan-id 10;
                ##
                ## Warning: requires 'vxlan' license
                ##
                vxlan {
                    vni 100010;
                }
            }
        }
    }
    EVPN-2 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        interface ge-0/0/0.20;
        route-distinguisher 198.51.100.2:1;
        vrf-target target:65000:1;
        vlans {
            v20 {
                vlan-id 20;
                ##
                ## Warning: requires 'vxlan' license
                ##
                vxlan {
                    vni 100020;
                }
            }
        }
    }
}
instance-type mac-vrf

インスタンスの種類を設定


protocol evpn

EVPN を設定


protocols evpn encapsulation vxlan

カプセル化方式を設定


protocols evpn extended-vni-list all

通す VNI を設定


vtep-source-interface lo0.0

VXLAN Tunnel Endpoint を lo0.0 に設定

トラフィックはこのインターフェースを通るため、lo0.0 同士の疎通が通っていないとサービスが止まる


interface ge-0/0/0.10

このインスタンスに属するインターフェースを設定


route-distinguisher 198.51.100.1:1

route-distinguisher 198.51.100.2:1

VRF 識別子の RD を設定


vrf-target target:65000:1

VRF のルートターゲットを設定


vlan-id 10

dot1q タグを 10 に指定


vni 100010

VNI を 100010 に指定

vlan-id と同一の階層にあるため、vlan-id 10 と紐づくことになる

ルーティング

オプション 

routing-options {
    router-id 198.51.100.1;
    autonomous-system 65000;
}

routing-options {
    router-id 198.51.100.2;
    autonomous-system 65000;
}
BGP ルータ ID と AS 番号を指定
OSPF 
protocols {
    ospf {
        area 0.0.0.0 {
            interface ge-0/0/3.0 {
                interface-type p2p;
            }
            interface lo0.0;
        }
    }
}

protocols {
    ospf {
        area 0.0.0.0 {
            interface ge-0/0/3.0 {
                interface-type p2p;
            }
            interface lo0.0;
        }
    }
}
OSPF エリア 0.0.0.0 に属するインターフェースを指定
BGP 
protocols {
    ##
    ## Warning: requires 'bgp' license
    ##
    bgp {
        group ibgp {
            type internal;
            local-address 198.51.100.1;
            family evpn {
                signaling;
            }
            neighbor 198.51.100.2;
        }
    }
}

protocols {
    ##
    ## Warning: requires 'bgp' license
    ##
    bgp {
        group ibgp {
            type internal;
            local-address 198.51.100.2;
            family evpn {
                signaling;
            }
            neighbor 198.51.100.1;
        }
    }
}
BGP を設定

ピアリングに使うアドレスを lo0 として、OSPF が Up して (アンダーレイ) lo0 アドレスを交換したあとに BGP のピアが Up する (オーバーレイ) ようにしている


address-family evpn

BGP でやり取りする情報に EVPN を設定

VXLAN の場合 MAC アドレスなどがやり取りされる

vEX01 , 02 set コンフィグ
種別 vEX01 set コンフィグ vEX02 set コンフィグ 解説
インターフェース 
set interfaces ge-0/0/0 flexible-vlan-tagging
set interfaces ge-0/0/0 encapsulation flexible-ethernet-services
set interfaces ge-0/0/0 unit 10 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/0 unit 10 family ethernet-switching vlan members v10
set interfaces ge-0/0/0 unit 20 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/0 unit 20 family ethernet-switching vlan members v20
set interfaces ge-0/0/3 unit 0 family inet address 203.0.113.1/30

set interfaces ge-0/0/0 flexible-vlan-tagging
set interfaces ge-0/0/0 encapsulation flexible-ethernet-services
set interfaces ge-0/0/0 unit 10 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/0 unit 10 family ethernet-switching vlan members v10
set interfaces ge-0/0/0 unit 20 family ethernet-switching interface-mode trunk
set interfaces ge-0/0/0 unit 20 family ethernet-switching vlan members v20
set interfaces ge-0/0/3 unit 0 family inet address 203.0.113.2/30
ルーティング

インスタンス 

set routing-instances EVPN-1 instance-type mac-vrf
set routing-instances EVPN-1 protocols evpn encapsulation vxlan
set routing-instances EVPN-1 protocols evpn extended-vni-list all
set routing-instances EVPN-1 vtep-source-interface lo0.0
set routing-instances EVPN-1 service-type vlan-based
set routing-instances EVPN-1 interface ge-0/0/0.10
set routing-instances EVPN-1 route-distinguisher 198.51.100.1:1
set routing-instances EVPN-1 vrf-target target:65000:1
set routing-instances EVPN-1 vlans v10 vlan-id 10
set routing-instances EVPN-1 vlans v10 vxlan vni 100010
set routing-instances EVPN-2 instance-type mac-vrf
set routing-instances EVPN-2 protocols evpn encapsulation vxlan
set routing-instances EVPN-2 protocols evpn extended-vni-list all
set routing-instances EVPN-2 vtep-source-interface lo0.0
set routing-instances EVPN-2 service-type vlan-based
set routing-instances EVPN-2 interface ge-0/0/0.20
set routing-instances EVPN-2 route-distinguisher 198.51.100.1:1
set routing-instances EVPN-2 vrf-target target:65000:1
set routing-instances EVPN-2 vlans v20 vlan-id 20
set routing-instances EVPN-2 vlans v20 vxlan vni 100020

set routing-instances EVPN-1 instance-type mac-vrf
set routing-instances EVPN-1 protocols evpn encapsulation vxlan
set routing-instances EVPN-1 protocols evpn extended-vni-list all
set routing-instances EVPN-1 vtep-source-interface lo0.0
set routing-instances EVPN-1 service-type vlan-based
set routing-instances EVPN-1 interface ge-0/0/0.10
set routing-instances EVPN-1 route-distinguisher 198.51.100.2:1
set routing-instances EVPN-1 vrf-target target:65000:1
set routing-instances EVPN-1 vlans v10 vlan-id 10
set routing-instances EVPN-1 vlans v10 vxlan vni 100010
set routing-instances EVPN-2 instance-type mac-vrf
set routing-instances EVPN-2 protocols evpn encapsulation vxlan
set routing-instances EVPN-2 protocols evpn extended-vni-list all
set routing-instances EVPN-2 vtep-source-interface lo0.0
set routing-instances EVPN-2 service-type vlan-based
set routing-instances EVPN-2 interface ge-0/0/0.20
set routing-instances EVPN-2 route-distinguisher 198.51.100.2:1
set routing-instances EVPN-2 vrf-target target:65000:1
set routing-instances EVPN-2 vlans v20 vlan-id 20
set routing-instances EVPN-2 vlans v20 vxlan vni 100020
ルーティング

オプション 

set routing-options router-id 198.51.100.1
set routing-options autonomous-system 65000

set routing-options router-id 198.51.100.2
set routing-options autonomous-system 65000
OSPF 
set protocols ospf area 0.0.0.0 interface ge-0/0/3.0 interface-type p2p
set protocols ospf area 0.0.0.0 interface lo0.0

set protocols ospf area 0.0.0.0 interface ge-0/0/3.0 interface-type p2p
set protocols ospf area 0.0.0.0 interface lo0.0
BGP 
set protocols bgp group ibgp type internal
set protocols bgp group ibgp local-address 198.51.100.1
set protocols bgp group ibgp family evpn signaling
set protocols bgp group ibgp neighbor 198.51.100.2

set protocols bgp group ibgp type internal
set protocols bgp group ibgp local-address 198.51.100.2
set protocols bgp group ibgp family evpn signaling
set protocols bgp group ibgp neighbor 198.51.100.1

疎通確認

疎通確認
確認 CSR01 CSR02 備考
疎通確認 
CSR01#ping 192.0.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.0.2.2, timeout is 2 seconds:
!!!!!
 Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/5 ms
 CSR01#
 CSR01#traceroute 192.0.2.2
 Type escape sequence to abort.
 Tracing the route to 192.0.2.2
 VRF info: (vrf in name/id, vrf out name/id)
   1 192.0.2.2 25 msec *  4 msec
 CSR01#
 CSR01#ping 192.0.2.6
 Type escape sequence to abort.
 Sending 5, 100-byte ICMP Echos to 192.0.2.6, timeout is 2 seconds:
 !!!!!
 Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/5 ms
 CSR01#
 CSR01#traceroute 192.0.2.6
 Type escape sequence to abort.
 Tracing the route to 192.0.2.6
 VRF info: (vrf in name/id, vrf out name/id)
   1 192.0.2.6 5 msec *  5 msec
 CSR01#
 CSR01#show ip arp
 Protocol  Address          Age (min)  Hardware Addr   Type   Interface
 Internet  192.0.2.1               -   5000.0003.0003  ARPA   GigabitEthernet4.10
 Internet  192.0.2.2              91   5000.0004.0003  ARPA   GigabitEthernet4.10
 Internet  192.0.2.5               -   5000.0003.0003  ARPA   GigabitEthernet4.20
 Internet  192.0.2.6              91   5000.0004.0003  ARPA   GigabitEthernet4.20

CSR02#ping 192.0.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.0.2.1, timeout is 2 seconds:
!!!!!
 Success rate is 100 percent (5/5), round-trip min/avg/max = 2/3/4 ms
 CSR02#
 CSR02#traceroute 192.0.2.1
 Type escape sequence to abort.
 Tracing the route to 192.0.2.1
 VRF info: (vrf in name/id, vrf out name/id)
   1 192.0.2.1 65 msec *  4 msec
 CSR02#
 CSR02#ping 192.0.2.5
 Type escape sequence to abort.
 Sending 5, 100-byte ICMP Echos to 192.0.2.5, timeout is 2 seconds:
 !!!!!
 Success rate is 100 percent (5/5), round-trip min/avg/max = 2/2/3 ms
 CSR02#
 CSR02#traceroute 192.0.2.5
 Type escape sequence to abort.
 Tracing the route to 192.0.2.5
 VRF info: (vrf in name/id, vrf out name/id)
   1 192.0.2.5 4 msec *  4 msec
 CSR02#
 CSR02#show ip arp
 Protocol  Address          Age (min)  Hardware Addr   Type   Interface
 Internet  192.0.2.1             109   5000.0003.0003  ARPA   GigabitEthernet4.10
 Internet  192.0.2.2               -   5000.0004.0003  ARPA   GigabitEthernet4.10
 Internet  192.0.2.5             109   5000.0003.0003  ARPA   GigabitEthernet4.20
 Internet  192.0.2.6               -   5000.0004.0003  ARPA   GigabitEthernet4.20

アンダーレイ・オーバーレイ動作確認

アンダーレイ・オーバーレイ動作確認
プロトコル CSR01 CSR02 備考
OSPF

アンダーレイ 

root@vEX01> show ospf neighbor
Address          Interface              State           ID               Pri  Dead
203.0.113.2      ge-0/0/3.0             Full            198.51.100.2     128    32

root@vEX01>

root@vEX02> show ospf neighbor
Address          Interface              State           ID               Pri  Dead
203.0.113.1      ge-0/0/3.0             Full            198.51.100.1     128    35

root@vEX02>
OSPF が Full になっていること
BGP

オーバーレイ 

root@vEX01> show bgp summary

Warning: License key missing; requires 'bgp' license

Threading mode: BGP I/O
Default eBGP mode: advertise - accept, receive - accept
Groups: 1 Peers: 1 Down peers: 0
Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending
bgp.evpn.0
                       2          2          0          0          0          0
Peer                     AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
198.51.100.2          65000        332        332       0       0     2:21:58 Establ
  bgp.evpn.0: 2/2/2/0
  EVPN-1.evpn.0: 2/2/2/0
  __default_evpn__.evpn.0: 0/0/0/0
  EVPN-2.evpn.0: 2/2/2/0

root@vEX01>

root@vEX02> show bgp summary

Warning: License key missing; requires 'bgp' license

Threading mode: BGP I/O
Default eBGP mode: advertise - accept, receive - accept
Groups: 1 Peers: 1 Down peers: 0
Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending
bgp.evpn.0
                       2          2          0          0          0          0
Peer                     AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
198.51.100.1          65000        331        328       0       0     2:21:27 Establ
  bgp.evpn.0: 2/2/2/0
  EVPN-1.evpn.0: 2/2/2/0
  __default_evpn__.evpn.0: 0/0/0/0
  EVPN-2.evpn.0: 2/2/2/0

root@vEX02>
State が Establish で EVPN ルートを受信していること

エントリ確認

エントリ確認
プロトコル CSR01 CSR02 備考
OSPF 
root@vEX01> show route protocol ospf

inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations
+ = Active Route, - = Last Active, * = Both

198.51.100.2/32    *[OSPF/10] 02:27:46, metric 1
                    >  to 203.0.113.2 via ge-0/0/3.0
224.0.0.5/32       *[OSPF/10] 03:50:32, metric 1
                       MultiRecv

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

bgp.evpn.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

EVPN-1.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)

EVPN-2.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)

root@vEX01>

root@vEX02> show route protocol ospf

inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations
+ = Active Route, - = Last Active, * = Both

198.51.100.1/32    *[OSPF/10] 02:28:25, metric 1
                    >  to 203.0.113.1 via ge-0/0/3.0
224.0.0.5/32       *[OSPF/10] 03:51:04, metric 1
                       MultiRecv

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

bgp.evpn.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

EVPN-1.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)

EVPN-2.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)

root@vEX02>
OSPF はアンダーレイで動作するため、対向側 lo0 のアドレスを受信しているか確認します
BGP 
root@vEX01> show route protocol bgp

Warning: License key missing; requires 'bgp' license


inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

bgp.evpn.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:14, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:12, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.2/248 IM
                   *[BGP/170] 02:15:23, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.2/248 IM
                   *[BGP/170] 01:43:11, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0

EVPN-1.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:14, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:12, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.2/248 IM
                   *[BGP/170] 02:15:23, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.2/248 IM
                   *[BGP/170] 01:43:11, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0

EVPN-2.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:14, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:04:00:03/304 MAC/IP
                   *[BGP/170] 00:01:12, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.2/248 IM
                   *[BGP/170] 01:44:59, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.2/248 IM
                   *[BGP/170] 01:43:11, localpref 100, from 198.51.100.2
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.2 via ge-0/0/3.0

root@vEX01>

root@vEX02> show route protocol bgp

Warning: License key missing; requires 'bgp' license


inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Limit/Threshold: 1048576/1048576 destinations

bgp.evpn.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:06, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:04, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.1/248 IM
                   *[BGP/170] 02:14:15, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.1/248 IM
                   *[BGP/170] 01:43:49, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0

EVPN-1.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:06, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:04, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.1/248 IM
                   *[BGP/170] 02:14:15, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.1/248 IM
                   *[BGP/170] 01:43:49, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0

EVPN-2.evpn.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2:198.51.100.1:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:06, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6250
2:203.0.113.255:1::0::50:00:00:03:00:03/304 MAC/IP
                   *[BGP/170] 00:00:04, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0, Push 6251
3:198.51.100.1:1::0::198.51.100.1/248 IM
                   *[BGP/170] 01:42:05, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0
3:203.0.113.255:1::0::198.51.100.1/248 IM
                   *[BGP/170] 01:42:05, localpref 100, from 198.51.100.1
                      AS path: I, validation-state: unverified
                    >  to 203.0.113.1 via ge-0/0/3.0

root@vEX02>
BGP はオーバーレイとして、対向側の MAC アドレスを受信しているか確認します
MAC 
root@vEX01> show ethernet-switching table

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned, P - Persistent static
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC, O - ovsdb MAC,
           B - Blocked MAC)


Ethernet switching table : 2 entries, 2 learned
Routing instance : EVPN-1
   Vlan                MAC                 MAC       GBP    Logical                SVLBNH/      Active
   name                address             flags     tag    interface              VENH Index   source
   v10                 50:00:00:03:00:03   D                ge-0/0/0.10         
   v10                 50:00:00:04:00:03   DR               vtep.32768                          198.51.100.2

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned, P - Persistent static
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC, O - ovsdb MAC,
           B - Blocked MAC)


Ethernet switching table : 2 entries, 2 learned
Routing instance : EVPN-2
   Vlan                MAC                 MAC       GBP    Logical                SVLBNH/      Active
   name                address             flags     tag    interface              VENH Index   source
   v20                 50:00:00:03:00:03   D                ge-0/0/0.20         
   v20                 50:00:00:04:00:03   DR               vtep.32772                          198.51.100.2

root@vEX01>

root@vEX02> show ethernet-switching table

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned, P - Persistent static
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC, O - ovsdb MAC,
           B - Blocked MAC)


Ethernet switching table : 2 entries, 2 learned
Routing instance : EVPN-1
   Vlan                MAC                 MAC       GBP    Logical                SVLBNH/      Active
   name                address             flags     tag    interface              VENH Index   source
   v10                 50:00:00:03:00:03   DR               vtep.32768                          198.51.100.1
   v10                 50:00:00:04:00:03   D                ge-0/0/0.10         

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned, P - Persistent static
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC, O - ovsdb MAC,
           B - Blocked MAC)


Ethernet switching table : 2 entries, 2 learned
Routing instance : EVPN-2
   Vlan                MAC                 MAC       GBP    Logical                SVLBNH/      Active
   name                address             flags     tag    interface              VENH Index   source
   v20                 50:00:00:03:00:03   DR               vtep.32771                          198.51.100.1
   v20                 50:00:00:04:00:03   D                ge-0/0/0.20         

root@vEX02>
MAC アドレステーブルでローカルの ge-0/0/0.10 , 20 にエントリがあること、リモートのエントリが vtep で学習できていることを確認します

動作確認 - ホスト別コマンドリスト

CSR01 , 02

  • ping
  • traceroute
  • show ip arp

vEX01

  • show route protocol ospf
  • show route protocol bgp
  • show ethernet-switching table

所感

Junos は MX / QFX / EX で共通ですが、EVPN の場合使用できるコマンドにかなり違いがありました。

vJunos-switch は EX9214 模擬ですが、bridge 系は動作しないと見て良いようです。

ネットを調べていると MX の EVPN 設定ガイドが見つかりますが、そのまま使えるコンフィグはほとんど無い印象です。


また Cisco 系では vlan-based が使用可能ですが、Juniper のデフォルトは vlan-aware bundle になるようで、意識してコンフィグできるようになりたいところです。(筆者もわかっているとは言い難い)

今回は Cisco との接続を今後行う可能性を考慮して、vlan-based で設定しました。

出典 : それ本当にEVPNでやるの？ EVPNの使いドコロがわかる150分
出典 : それ本当にEVPNでやるの？ EVPNの使いドコロがわかる150分
L2 と L3 の顧客分離のための MAC-VRF および VRF インスタンスを備えた EVPN-VXLAN ファブリック
出典 : MAC-VRFルーティングインスタンスタイプの概要

リファレンス

Juniper

Junos OS EVPN User Guide

Configuring EVPN Routing Instances on EX9200 Switches

スイッチ向けEVPNの概要

日商エレクトロニクス

Juniper QFXで実践！ EVPN/VXLANの実力値

JANOG

みんな First-Hop Redundancy どうしてるよ？

EVPN Anycast Gateway を 商⽤導⼊した話

その他

EVPN - VLAN Based と VLAN Aware Bundle の相互接続


脚注

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