JUNOS_LAG
JUNOSのLAG
まずはLAGの構成から・・・
EX2200-24T側Config
set chassis aggregated-devices ethernet device-count 10
delete interfaces ge-0/0/0 unit 0
delete interfaces ge-0/0/1 unit 0
delete interfaces ge-0/0/2 unit 0
delete interfaces ge-0/0/3 unit 0set interfaces ge-0/0/0 ether-options 802.3ad ae0
set interfaces ge-0/0/1 ether-options 802.3ad ae0
set interfaces ge-0/0/2 ether-options 802.3ad ae0
set interfaces ge-0/0/3 ether-options 802.3ad ae0
set interfaces ae0 aggregated-ether-options minimum-links 2
set interfaces ae0 aggregated-ether-options lacp active
set interfaces ae0 aggregated-ether-options lacp periodic fast
set interfaces ae0 unit 0 family ethernet-switching
EX2200のVC側設定
set chassis aggregated-devices ethernet device-count 10
delete interfaces ge-0/0/0 unit 0
delete interfaces ge-0/0/1 unit 0
delete interfaces ge-1/0/0 unit 0
delete interfaces ge-1/0/1 unit 0set interfaces interface-range AE0-RANGE member ge-0/0/0
set interfaces interface-range AE0-RANGE member ge-0/0/1
set interfaces interface-range AE0-RANGE member ge-1/0/0
set interfaces interface-range AE0-RANGE member ge-1/0/1
set interfaces interface-range AE0-RANGE ether-options 802.3ad ae0
set interfaces ae0 aggregated-ether-options minimum-links 2
set interfaces ae0 aggregated-ether-options lacp active
set interfaces ae0 aggregated-ether-options lacp periodic fast
set interfaces ae0 unit 0 family ethernet-switching
VC側はinterface-rangeを使ってLAGを構成するIFを一つのGroupにまとめただけで、EX2200-24Tと、VC側の設定の差はなし。 これは設定者の好みによるかと
確認
EX2200
root> show interfaces terse
Interface Admin Link Proto Local
ge-0/0/0 up up
ge-0/0/0.0 up up aenet --> ae0.0
ge-0/0/1 up up
ge-0/0/1.0 up up aenet --> ae0.0
ge-0/0/2 up up
ge-0/0/2.0 up up aenet --> ae0.0
ge-0/0/3 up up
ge-0/0/3.0 up up aenet --> ae0.0
ae0 up up
ae0.0 up up eth-switch
この状態で、ge-0/0/0 ~ ge-0/0/2までのLinkを抜く。
「minimum-links 2」だからDownするはず。
root> show interfaces terse
Interface Admin Link Proto Local
ge-0/0/0 up down
ge-0/0/0.0 up down aenet --> ae0.0
ge-0/0/1 up down
ge-0/0/1.0 up down aenet --> ae0.0
ge-0/0/2 up down
ge-0/0/2.0 up down aenet --> ae0.0
ge-0/0/3 up up
ge-0/0/3.0 up up aenet --> ae0.0
ae0 up down
ae0.0 up down eth-switch
ちゃんとAE0もダウンしてる。