[alcatel-nsp] LACP+load balance

[Alexander Saveliev]

Hello!

Hashing on LAG depends on types of traffic that flow through it.
For example, if your LAG is a P-P MPLS link and if most of your traffic 
belongs only to single L3VPN, than by default this traffic will flow 
through single link of LAG. ALU allocates one MPLS label per L3VPN. ALU 
makes hashing based on MPLS stack by default.
ALU has several options to improve situation. You can use Entropy Label 
for example, or you can change the hashing procedure to use L3 headers 
("config>system>lsr-load-balancing" command) etc. Of course there is a 
dependancy on the software version that you have.

On 20.11.2013 08:59, venkat wrote:
>
>
>
> the network load isn´t balancedacross both lag ports.what could be 
> solution?
>
>
> # show lag 1 detail
>
> ===============================================================================
>
> LAG Details
>
> ===============================================================================
>
> Description        ::X0000
>
> -------------------------------------------------------------------------------
>
> Details
>
> -------------------------------------------------------------------------------
>
> Lag-id              : 1 Mode                 : network
>
> Adm                 : up Opr                  : up
>
> Thres. Exceeded Cnt : 6 Port Threshold       : 0
>
> Thres. Last Cleared : 08/13/2013 03:10:55 Threshold Action     : down
>
> Dynamic Cost        : false Encap Type           : null
>
> Configured Address  : 00:16:4d:88:3c:9d Lag-IfIndex          : 1342177281
>
> Hardware Address    : 00:16:4d:88:3c:9d
>
> Hold-time Down      : 0.0 sec Port Type            : standard
>
> Per FP Ing Queuing  : disabled
>
> LACP                : disabled
>
> Standby Signaling   : lacp
>
> -------------------------------------------------------------------------------
>
> Port-id        Adm     Act/Stdby Opr Primary   Sub-group     Forced  Prio
>
> -------------------------------------------------------------------------------
>
> 1/1/1          up      active    up yes       1             -       32768
>
> 1/1/3          up      active up                1             -       
> 32768
>
>
> # show port 1/1/1 and 1/1/3  detail
>
> ===============================================================================
>
> Ethernet Interface
>
> ===============================================================================
>
> Description        : :1G:X0000
>
> Interface          : 1/1/1 Oper Speed       : 1 Gbps
>
> Link-level         : Ethernet Config Speed     : 1 Gbps
>
> Admin State        : up Oper Duplex      : full
>
> Oper State         : up - Active in LAG 1 Config Duplex    : full
>
> Physical Link      : Yes MTU              : 9212
>
> Single Fiber Mode  : No Min Frame Length : 64 Bytes
>
> IfIndex            : 35684352 Hold time up     : 5 seconds
>
> Last State Change  : 08/13/2013 03:10:55 Hold time down   : 0 seconds
>
> Last Cleared Time  : 06/11/2013 03:59:47 DDM Events       : Enabled
>
> Phys State Chng Cnt: 5
>
> Configured Mode    : network Encap Type       : null
>
> Dot1Q Ethertype    : 0x8100 QinQ Ethertype   : 0x8100
>
> PBB Ethertype      : 0x88e7
>
> Ing. Pool % Rate   : 100 Egr. Pool % Rate : 100
>
> Ing. Pool Policy   : n/a
>
> Egr. Pool Policy   : n/a
>
> Net. Egr. Queue Pol: Red-Metro-1/10-Gbps
>
> Egr. Sched. Pol    : n/a
>
> Auto-negotiate     : false MDI/MDX          : unknown
>
> Accounting Policy  : None Collect-stats    : Disabled
>
> Acct Plcy Eth Phys : None Collect Eth Phys : Disabled
>
> Egress Rate        : Default Ingress Rate     : Default
>
> Load-balance-algo  : Default LACP Tunnel      : Disabled
>
>
>
> the network load isn´t balancedacross both ports.
>
> -------------------------------------------------------------------------------
>
> At time t = 20 sec (Mode: Rate)
>
> -------------------------------------------------------------------------------
>
> 1/1/1104559807129110781841228900
>
> % Util85.71--0.66------
>
> 1/1/3617208852203029956769200
>
> % Util0.50--17.32------
>
> -------------------------------------------------------------------------------
>
> Totals105177014129962210848366998100
>
> % Util43.11--8.99------
>
>
>
> -- 
> Thanks
> Venkat
>
>
>
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