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LACP via MLAG config check

LACP via MLAG config check

Ian_Broadway
New Contributor III
Hi All,

First time configuring a server with LACP via two switches with MLAG configuration.

Can someone just confirm this is correct?

I have read the XOS guide and have not done anything extra with regards to configuring a LACP MAC or setting priorities?

The two switches are x460-g2s running 21.1.3.7 patch 1-7. Currently seems to be working.

see the configuration below;

MCR-SVR-SW3.24 # sh mlag peer Multi-switch Link Aggregation Peers: MLAG Peer : MCR-SVR-SW4 VLAN : ISC-3 Virtual Router : VR-Default Local IP Address : 1.1.1.17 Peer IP Address : 1.1.1.18 MLAG ports : 1 Tx-Interval : 1000 ms Checkpoint Status : Up Peer Tx-Interval : 1000 ms Rx-Hellos : 1455 Tx-Hellos : 1509 Rx-Checkpoint Msgs: 1213 Tx-Checkpoint Msgs: 1345 Rx-Hello Errors : 0 Tx-Hello Errors : 0 Hello Timeouts : 0 Checkpoint Errors : 0 Up Time : 0d:0h:23m:43s Peer Conn.Failures: 0 Local MAC : 00:04:96:99:02:e1 Peer MAC : 00:04:96:99:06:98 Config'd LACP MAC : None Current LACP MAC : 00:04:96:99:06:98 Authentication : None
MCR-SVR-SW4.31 # sh mlag peer Multi-switch Link Aggregation Peers: MLAG Peer : MCR-SVR-SW3 VLAN : ISC-3 Virtual Router : VR-Default Local IP Address : 1.1.1.18 Peer IP Address : 1.1.1.17 MLAG ports : 1 Tx-Interval : 1000 ms Checkpoint Status : Up Peer Tx-Interval : 1000 ms Rx-Hellos : 1441 Tx-Hellos : 1441 Rx-Checkpoint Msgs: 1333 Tx-Checkpoint Msgs: 1199 Rx-Hello Errors : 0 Tx-Hello Errors : 0 Hello Timeouts : 0 Checkpoint Errors : 0 Up Time : 0d:0h:23m:29s Peer Conn.Failures: 0 Local MAC : 00:04:96:99:06:98 Peer MAC : 00:04:96:99:02:e1 Config'd LACP MAC : None Current LACP MAC : 00:04:96:99:06:98 Authentication : None
MCR-SVR-SW3.25 # sh mlag ports Local Local Remote MLAG Local Link Remote Peer Fail Fail Id Port State Link Peer Status Count Count ================================================================================ 1 1 A Up MCR-SVR-SW4 Up 0 0 ================================================================================ Local Link State: A - Active, D - Disabled, R - Ready, NP - Port not present Remote Link : Up - One or more links are active on the remote switch, Down - No links are active on the remote switch, N/A - The peer has not communicated link state for this MLAG port Number of Multi-switch Link Aggregation Groups : 1 Convergence control : Conserve Access Lists Reload Delay Interval : 30 seconds Reload Delay : Disabled
MCR-SVR-SW4.32 # sh mlag ports Local Local Remote MLAG Local Link Remote Peer Fail Fail Id Port State Link Peer Status Count Count ================================================================================ 1 1 A Up MCR-SVR-SW3 Up 0 0 ================================================================================ Local Link State: A - Active, D - Disabled, R - Ready, NP - Port not present Remote Link : Up - One or more links are active on the remote switch, Down - No links are active on the remote switch, N/A - The peer has not communicated link state for this MLAG port Number of Multi-switch Link Aggregation Groups : 1 Convergence control : Conserve Access Lists Reload Delay Interval : 30 seconds Reload Delay : Disabled
MCR-SVR-SW3.26 # sh sharing Load Sharing Monitor Config Current Agg Min Ld Share Dist Ld Share Agg Link Link Up Master Master Control Active Algorithm Flags Group Mbr State Transitions ================================================================================ 1 1 LACP 1 L2 A 1 Y A 2 ================================================================================ Link State: A-Active, D-Disabled, R-Ready, NP-Port not present, L-Loopback Minimum Active: (<) Group is down. # active links less than configured minimum Load Sharing Algorithm: (L2) Layer 2 address based, (L3) Layer 3 address based (L3_L4) Layer 3 address and Layer 4 port based (custom) User-selected address-based configuration Custom Algorithm Configuration: ipv4 L3-and-L4, xor Distribution Flags: A - All: Distribute to all members, L - Local Slot: Distribute to members local to ingress slot, P - Port Lists: Distribute to per-slot configurable subset of members, R - Resilient Hashing enabled. Number of load sharing trunks: 1
MCR-SVR-SW4.33 # sh sharing Load Sharing Monitor Config Current Agg Min Ld Share Dist Ld Share Agg Link Link Up Master Master Control Active Algorithm Flags Group Mbr State Transitions ================================================================================ 1 1 LACP 1 L2 A 1 Y A 2 ================================================================================ Link State: A-Active, D-Disabled, R-Ready, NP-Port not present, L-Loopback Minimum Active: (<) Group is down. # active links less than configured minimum Load Sharing Algorithm: (L2) Layer 2 address based, (L3) Layer 3 address based (L3_L4) Layer 3 address and Layer 4 port based (custom) User-selected address-based configuration Custom Algorithm Configuration: ipv4 L3-and-L4, xor Distribution Flags: A - All: Distribute to all members, L - Local Slot: Distribute to members local to ingress slot, P - Port Lists: Distribute to per-slot configurable subset of members, R - Resilient Hashing enabled. Number of load sharing trunks: 1

I've highlighted the config from one of the switches in bold to differentiate.

Do i need to worry about this?
http://documentation.extremenetworks.com/exos/EXOS_21_1/Slots_and_Ports/c_LACPDU-transmision-on-MLAG...

Thanks
Ian

5 REPLIES 5

dflouret
Extreme Employee
Ian,

One of the hidden goodies of v21.1.x is that you have an application in the GUI to automate the configuration of MLAG.

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It is documented in the Chalet User Guide
http://documentation.extremenetworks.com/chalet/index.html

You may want to play with it and tell us what you think about it.

Ian_Broadway
New Contributor III
the commands i used;

MCR-SVR-SW3
create vlan ISC-3
CONF "ISC-3" T 1502
conf isc-3 add po 50 t
conf "isc-3" ipaddress 1.1.1.17/30
create mlag peer MCR-SVR-SW4
conf mlag peer "MCR-SVR-SW4" ipaddress 1.1.1.18
enable sharing 1 grouping 1 algorithm address-based L2 lacp
enable mlag port 1 peer "MCR-SVR-SW4" id 1

MCR-SVR-SW4
create vlan ISC-3
conf vlan "isc-3" t 1502
conf "isc-3" ipaddress 1.1.1.18/30
conf "isc-3" add po 49 t
create mlag peer MCR-SVR-SW3
conf mlag peer "MCR-SVR-SW3" ipaddress 1.1.1.17
enable sharing 1 grouping 1 algorithm address-based L2 lacp
enable mlag port 1 peer "MCR-SVR-SW3" id 1

yes, the lacp-mac is one of the two MLAG peer's mac.

I assume I can just configure the current auto mac as the configured one?
GTM-P2G8KFN