LACP Configuration 정리(Juniper)

1. Link Aggregation Set Configuration

set chassis aggregated-devices ethernet device-count 2

Chassis에서 지원하는 Aggregation Aggregated Ethernet(ae) Interface의 수를 지정

set interfaces ge-0/0/0 ether-options 802.3ad ae0

Physical Interface를 Link Aggregation Interface에 Binding

set interfaces ae0 unit 0 family bridge interface-mode trunk
set interfaces ae0 unit 0 family bridge vlan-id-list 10

Link Aggregation Interface(ae0)에 VLAN 설정

set interfaces irb unit 10 family inet address 1.1.2.1/24

Link Aggregation Interface(ae0)에 IRB 설정
Link Aggregation Interface(ae0)를 Routed Interface로 사용하고 싶다면 bridge → inet으로 변경

set interfaces ae0 aggregated-ether-options link-speed 10g

Link Aggregation Interface(ae) Link Speed 설정

set interfaces ae0 aggregated-ether-options minimum-bandwidth bw-unit [bps/kbps/mbps/gbps]

Link Aggregation Interface(ae) Bundle에 대한 최소 Bandwidth 단위 설정

set interfaces ae0 aggregated-ether-options minimum-bandwidth bw-value [value]

최소 Bandwidth 값을 1~128,000 사이로 설정

set interfaces ae0 aggregated-ether-options minimum-links 8

Link Aggregation Interface(ae)에 구성될 최소 Link 수를 설정
Link Aggregation Interface(ae)에 구성된 Link 수가 minimum-links에 구성된 수보다 작은 경우, commit Failure

set chassis aggregated-devices maximum-links [16/32/64]

Link Aggregation Interface(ae)에 구성될 최대 Link 수를 지정

set forwarding-options enhanced-hash-key hash-mode [layer2-header/leyer2-payload]

Load Balancing Algorithm 변경

2. LACP Set Configuration

set interfaces ae0 aggregated-ether-options lacp [active/passive/force-up]
	→ LACP 활성화 및 LACP Mode 지정
	→ Force-up : On Mode

LACP 활성화 및 LACP Mode 지정
Force-up : On Mode

set interface ae0 aggregated-ether-options lacp periodic [fast/slow]
	→ LACP Timeout 설정

LACP Timeout 설정

set interfaces ae0 aggregated-ether-options lacp system-priority 32768 
	→ LACP System Priority 설정

LACP System Priority 설정

set interfaces ae0 aggregated-ether-options lacp system-id 2c:6b:f5:4f:06:c0
	→ LACP System-ID 설정

LACP System-ID 설정

set interfaces ge-0/0/0 ether-options 802.3ad ae0 lacp port-priority 32768
	→ LACP Port Priority 설정

LACP Port Priority 설정

set interfaces ae0 aggregated-ether-options lacp admin-key 32768
	→ LACP admin key 설정

LACP admin key 설정

3. Link Aggregation show Configuration

root@R1> show interfaces terse ae0 
Interface               Admin Link Proto    Local                 Remote
ae0                     up    up
ae0.0                   up    up   bridge

Link Aggregation Interface(ae) State 확인

root@R1> show interfaces terse | match ae0 
ge-0/0/1.0              up    up   aenet    --> ae0.0
ge-0/0/2.0              up    up   aenet    --> ae0.0
ae0                     up    up
ae0.0                   up    up   bridge

Link Aggregation Interface(ae) State 확인 및 Binding Physical Interface 확인

root@R1> show interfaces ge-0/0/1 | match pps 
  Input rate     : 0 bps (0 pps)
  Output rate    : 1032 bps (0 pps)

'match pps' 명령어를 이용하여 Input/Output Count를 쉽게 확인 가능

root@R1> show interfaces ae0 
Physical interface: ae0, Enabled, Physical link is Up
  Interface index: 159, SNMP ifIndex: 540
  Link-level type: Ethernet, MTU: 1514, Speed: 2Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled
  Pad to minimum frame size: Disabled
  Minimum links needed: 1, Minimum bandwidth needed: 1bps
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  Current address: 2c:6b:f5:4f:06:c3, Hardware address: 2c:6b:f5:4f:06:c3
  Last flapped   : 2024-10-24 15:45:43 UTC (08:18:40 ago)
  Input rate     : 0 bps (0 pps)
  Output rate    : 2072 bps (1 pps)

  Logical interface ae0.0 (Index 337) (SNMP ifIndex 541)
    Flags: Up SNMP-Traps 0x24024000 Encapsulation: Ethernet-Bridge
    Statistics        Packets        pps         Bytes          bps
    Bundle:
        Input :             0          0             0            0
        Output:             0          0             0            0
    Adaptive Statistics:
        Adaptive Adjusts:          0
        Adaptive Scans  :          0
        Adaptive Updates:          0
    Protocol bridge, MTU: 1514
      Flags: Is-Primary, Trunk-Mode

Link Aggregation Interface(ae)에 대한 Link State, MTU, Speed, Input/Output Count 등 정보 확인

root@R1> show interfaces ae0 extensive 
Physical interface: ae0, Enabled, Physical link is Up
  Interface index: 159, SNMP ifIndex: 540, Generation: 164
  Link-level type: Ethernet, MTU: 1514, Speed: 2Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Disabled
  Pad to minimum frame size: Disabled
  Minimum links needed: 1, Minimum bandwidth needed: 1bps
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  Current address: 2c:6b:f5:4f:06:c3, Hardware address: 2c:6b:f5:4f:06:c3
  Last flapped   : 2024-10-24 15:45:43 UTC (08:19:28 ago)
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :                  558                    0 bps
   Output bytes  :             15564146                 2072 bps
   Input  packets:                   10                    0 pps
   Output packets:               119732                    1 pps
   IPv6 transit statistics:
   Input  bytes  :                    0
   Output bytes  :                    0
   Input  packets:                    0
   Output packets:                    0
  Dropped traffic statistics due to STP State:
   Input  bytes  :                    0
   Output bytes  :                    0
   Input  packets:                    0 
   Output packets:                    0
  MAC statistics:                      Receive         Transmit
    Broadcast packets                        0                0
    Multicast packets                        0                0
  Input errors:
    Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0, Resource errors: 0
  Output errors:
    Carrier transitions: 2, Errors: 0, Drops: 0, MTU errors: 0, Resource errors: 0
  Ingress queues: 8 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0                                0                    0                    0
    1                                0                    0                    0
    2                                0                    0                    0
    3                                0                    0                    0
  Egress queues: 8 supported, 4 in use
  Queue counters:       Queued packets  Transmitted packets      Dropped packets
    0                                0                    0                    0
    1                                0                    0                    0
    2                                0                    0                    0
    3                                0                    0                    0
  Queue number:         Mapped forwarding classes
    0                   best-effort
    1                   expedited-forwarding
    2                   assured-forwarding
    3                   network-control

  Logical interface ae0.0 (Index 337) (SNMP ifIndex 541) (Generation 157)
    Flags: Up SNMP-Traps 0x24024000 Encapsulation: Ethernet-Bridge
    Statistics        Packets        pps         Bytes          bps
    Bundle:
        Input :             0          0             0            0
        Output:             0          0             0            0
    Adaptive Statistics:
        Adaptive Adjusts:          0
        Adaptive Scans  :          0
        Adaptive Updates:          0
    Link:
      ge-0/0/1.0
        Input :             0          0             0            0
        Output:            10          0           460            0
      ge-0/0/2.0
        Input :             0          0             0            0
        Output:             0          0             0            0
                                        

    Aggregate member links: 2

    LACP info:        Role     System             System       Port     Port    Port 
                             priority         identifier   priority   number     key 
      ge-0/0/1.0     Actor        127  2c:6b:f5:4f:06:c0        127        1       1
      ge-0/0/1.0   Partner        127  2c:6b:f5:6e:9f:c0        127        1       1
      ge-0/0/2.0     Actor        127  2c:6b:f5:4f:06:c0        127        2       1
      ge-0/0/2.0   Partner        127  2c:6b:f5:6e:9f:c0        127        2       1
    LACP Statistics:       LACP Rx     LACP Tx   Unknown Rx   Illegal Rx 
      ge-0/0/1.0                 0           0            0            0
      ge-0/0/2.0                 0           0            0            0
    Marker Statistics:   Marker Rx     Resp Tx   Unknown Rx   Illegal Rx
      ge-0/0/1.0                 0           0            0            0
      ge-0/0/2.0                 0           0            0            0
    List-Type       Status
    Primary         Active
                Interfaces:
                ge-0/0/1        Up   
                ge-0/0/2        Up   
    List-Type       Status
    Backup          Down 
    Standby         Down 
    Protocol bridge, MTU: 1514, Generation: 175, Route table: 3, Mesh Group: __all_ces__
      Flags: Is-Primary, Trunk-Mode

4. LACP show Configuration

root@R1> show lacp interfaces 
Aggregated interface: ae0
    LACP state:       Role   Exp   Def  Dist  Col  Syn  Aggr  Timeout  Activity
      ge-0/0/1       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
      ge-0/0/1     Partner    No    No   Yes  Yes  Yes   Yes     Fast   Passive
      ge-0/0/2       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
      ge-0/0/2     Partner    No    No   Yes  Yes  Yes   Yes     Fast   Passive
    LACP protocol:        Receive State  Transmit State          Mux State 
      ge-0/0/1                  Current   Fast periodic Collecting distributing
      ge-0/0/2                  Current   Fast periodic Collecting distributing

정상인 상태 확인
- 'Expired & Defaulted' Flag는 'No'
- 'Distributed & Collecting & Synchronization & Aggregation' Flag는 'Yes'
- 'Receive State' Flag는 'Current'
- 'Transmit State' Flag는 'Fast/Slow Periodic'
- 'Mux State' Flag는 'Collecting Distributing'

Receive State
Current	∘ LACP PDU를 정상적으로 수신
Defaulted	∘ Timeout이 두 번 만료될 때까지 LACP PDU가 수신되지 않을 경우
Expired	∘ Timeout이 한 번 만료될 때까지 LACP PDU가 수신되지 않을 경우
Initialize	∘ 물리적 연결이 변경되거나 Start Event가 발생한 경우
LACP Disabled	∘ 포트가 Half Duplex로 동작하는 경우
Port Disabled	∘ Start Event가 없는 경우

Transmit State
Fast Periodic	∘ Transmissions Periodic는 Fast Timer로 Active
Slow Periodic	∘ Transmissions Periodic는 Slow Timer로 Active
Periodic Timer	∘ Periodic Timer가 Expire되면 보이는 잠깐의 일시적인 상태
No Periodic	∘ Transmissions Periodic이 Disable

Mux State
Attached	∘ Aggregator에 포트를 연결하는 프로세스를 시작
Collecting	∘ 해당 링크의 수신 기능이 Aggregation과 관련하여 Enable되어 있음을 표시 ∘ 수신된 Frame은 Collection을 위해 Aggregator로 전달
Distributing	∘ 해당 링크의 전송 기능이 Aggregation과 관련하여 Enable되어 있음을 표시 ∘ Frame은 전송을 위해 Aggregator의 Distribution에서 Transmission이 가능
Collecting Distributing	∘ Collecting and Distributing state가 결합된 상태
Detached	∘ 포트를 Aggregator에서 분리하는 프로세스 진행
Waiting	∘ 결과를 기다리고 있는 상태

root@R1> show lacp interfaces extensive 
Aggregated interface: ae0
    LACP state:       Role   Exp   Def  Dist  Col  Syn  Aggr  Timeout  Activity
      ge-0/0/1       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
      ge-0/0/1     Partner    No    No   Yes  Yes  Yes   Yes     Fast   Passive
      ge-0/0/2       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
      ge-0/0/2     Partner    No    No   Yes  Yes  Yes   Yes     Fast   Passive
    LACP protocol:        Receive State  Transmit State          Mux State 
      ge-0/0/1                  Current   Fast periodic Collecting distributing
      ge-0/0/2                  Current   Fast periodic Collecting distributing
    LACP info:        Role     System             System       Port     Port    Port 
                             priority         identifier   priority   number     key 
      ge-0/0/1       Actor        127  2c:6b:f5:4f:06:c0        127        1       1
      ge-0/0/1     Partner        127  2c:6b:f5:6e:9f:c0        127        1       1
      ge-0/0/2       Actor        127  2c:6b:f5:4f:06:c0        127        2       1
      ge-0/0/2     Partner        127  2c:6b:f5:6e:9f:c0        127        2       1

LACP System Priority, System ID, Port Priority, Port ID, Key 등을 추가적으로 확인 가능

root@QFX5100-48S_R1> show lacp interfaces extensive 
Aggregated interface: ae0
    LACP state:       Role   Exp   Def  Dist  Col  Syn  Aggr  Timeout  Activity
      ge-0/0/6 FUP    Actor  Yes    No   Yes  Yes  Yes   Yes     Fast   Passive
      ge-0/0/6 FUP  Partner   No   Yes    No   No  Yes   Yes     Fast   Passive
      ge-0/0/7       Actor    No   Yes    No   No   No   Yes     Fast   Passive
      ge-0/0/7     Partner    No   Yes    No   No   No   Yes     Fast   Passive
    LACP protocol:        Receive State  Transmit State          Mux State 
      ge-0/0/6 FUP              Current     No periodic Collecting distributing
      ge-0/0/7                Defaulted     No periodic           Detached
    LACP info:        Role     System             System       Port     Port    Port 
                             priority         identifier   priority   number     key 
      ge-0/0/6       Actor        127  5c:45:27:15:7d:00        127        5       1
      ge-0/0/6     Partner          1  00:00:00:00:00:00          1        5       1
      ge-0/0/7       Actor        127  5c:45:27:15:7d:00        127        6       1
      ge-0/0/7     Partner          1  00:00:00:00:00:00          1        6       1

'force-up'으로 구성된 경우, LACP State는 Interface Name과 함께 'FUP'을 표시
위 로그는 실장비에서 양단의 장비에 'force-up'으로 구성한 결과
개인적으로 모든 Physical Interface가 아닌, 하나의 Physical Interface에만 'FUP'이 표시되는 것은 문제가 있다고 판단
Ping Test를 진행하여 실제로 Link Aggregation이 동작하는 것은 확인

root@R1> show lacp statistics interfaces ae0 
Aggregated interface: ae0
    LACP Statistics:       LACP Rx     LACP Tx   Unknown Rx   Illegal Rx 
      ge-0/0/1               33038       33072            0            0
      ge-0/0/2               33038       33071            0            0

Link Aggregation Interface(ae)에 연관된 각 Physical Interface에 대한 LACP 통계 확인

저작자표시 비영리 변경금지

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1. Link Aggregation Set Configuration

2. LACP Set Configuration

3. Link Aggregation show Configuration

4. LACP show Configuration

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