Switching

Hi Guys,

appreciate if you can provide some pointers to this impasse. 

I have set up a LAG between a EX and a presumedly a Dell Switch.

However after having followed the instructions to set up LAG ( aka known as port-channel ) 

inthe Dell switch side, we are still unable to get this simple LAG up.

Below shows the physical link setup setup

EX4200(ge-3/0/44) ------------> DELL( BX400-SW1/0/19)

EX4200(ge-2/0/44) ------------> DELL (BX400-SW1/0/20) 

Any suggestions guys ? 

Thanks for reading and in advance ! 

>>>>>OUTPUT from the EX<<<<

root@csw01# run show lacp interfaces ge-3/0/44
Aggregated interface: ae9
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
ge-3/0/44 Actor No Yes No No No Yes Fast Active
ge-3/0/44 Partner No Yes No No No Yes Fast Passive
LACP protocol: Receive State Transmit State Mux State
ge-3/0/44 Defaulted Fast periodic Detached

{master:0}[edit]
root@csw01# run show lacp interfaces ge-2/0/44
Aggregated interface: ae9
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
ge-2/0/44 Actor No Yes No No No Yes Fast Active
ge-2/0/44 Partner No Yes No No No Yes Fast Passive
LACP protocol: Receive State Transmit State Mux State
ge-2/0/44 Defaulted Fast periodic Detached

root@csw01# run show interfaces ae9 statistics
Physical interface: ae9, Enabled, Physical link is Down
Interface index: 342, SNMP ifIndex: 796
Link-level type: Ethernet, MTU: 1514, Speed: Unspecified, BPDU Error: None,
MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
Flow control: Disabled, Minimum links needed: 1, Minimum bandwidth needed: 0
Device flags : Present Running
Interface flags: Hardware-Down SNMP-Traps Internal: 0x0
Current address: 66:87:88:ac:12:8c, Hardware address: 66:87:88:ac:12:8c
Last flapped : 2012-07-06 19:07:02 SGT (4d 16:44 ago)
Statistics last cleared: Never
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Input errors: 0, Output errors: 0

Logical interface ae9.0 (Index 157) (SNMP ifIndex 815)
Flags: Hardware-Down Device-Down SNMP-Traps 0x0 Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 348 0 39635 0
Output: 50 0 3858 0
Protocol eth-switch
Flags: None

>>>>>OUTPUT from the DELL<<<<<

(BX400-SW1) #show lacp interface BX400-SW1/0/19

Intf Role Exp Def Dist Col Syn Aggr Timeout Activity
------ ------- --- --- ---- --- --- ---- ------- --------
BX400-SW1/0/19 Actor No Yes Yes Yes Yes Yes Fast Active
BX400-SW1/0/19 Partner No No No No Yes Yes Fast Active

(BX400-SW1) #show lacp interface BX400-SW1/0/20

Intf Role Exp Def Dist Col Syn Aggr Timeout Activity
------ ------- --- --- ---- --- --- ---- ------- --------
BX400-SW1/0/20 Actor No Yes Yes Yes Yes Yes Fast Active
BX400-SW1/0/20 Partner No No No No Yes Yes Fast Active

some more configuration on the EX side

root@csw01# show interfaces ge-2/0/44
ether-options {
802.3ad ae9;
}

{master:0}[edit]
root@csw01# show interfaces ge-3/0/44
ether-options {
802.3ad ae9;
}

{master:0}[edit]
root@csw01# show interfaces ae9
aggregated-ether-options {
lacp {
active;
periodic fast;
}
}
unit 0 {
family ethernet-switching {
port-mode access;
}
}

Hope this helps 

Rgds

If you do a show log messages, do you see the following:

ae9 : Warning: aggregated-ether-options link-speed no kernel value! default to  0

If so, you need to specify the speed of the link i.e.

set interfaces ge-2/0/44 ether-options speed 100m

set interfaces ge-3/0/44 ether-options speed 100m

Or you can set the speed under the ae9 interface by entering:

set interfaces ae9 aggregated-ether-options link-speed 100m

Further to this, I did some testing connecting this to a Cisco switch and it works fine with the configuration as follows:

root@EX2200> show configuration interfaces ae0
aggregated-ether-options {
link-speed 100m;
lacp {
active;
periodic fast;
}
}
unit 0 {
family ethernet-switching {
port-mode trunk;
native-vlan-id 1;
}
}

root@EX2200> show configuration interfaces ge-0/0/12
ether-options {
speed {
100m;
}
802.3ad ae0;
}

root@EX2200> show configuration interfaces ge-0/0/13
ether-options {
speed {
100m;
}
802.3ad ae0;
}

thanks Martin,

let me see if that works and get back to this thread. 

Cheers

Henley

What about on 10G links? I see this warning on all of my AEs then I see another log message stating the Link speed is set to 10000000000. Show interface has the speed at the aggregate (20gbps)

We are having tons of problems with our ESX hosts and physical servers  and same Vlan communications. We have tried some tweaks to MTU raising things to 1700 but that didnt get us much.

UNC is failing for example.

I just see these errors and wonder if host to Juniper switch compatibility issues are involved at all.

This case is about LACP and teh link not coming up due only onse side having LACP enabled. Is your issue a different issue or is it a similar issue that your AE interface is not comining up? If you have 2 x 10 G links in your ae interface, the aggregated is 20G. If your issue is separate, I suggest you open a new topic and post some kind of statistics, configuration, logs etc and explain what you are expecting to get frm said configuration and what is/is not happening.

ok finally nailed it for my case ...  Its a misconfiguration on the DELL switch side 

It turns out that LACP mode is not enabled on the DELL side. hence its not receiving nor transmitting LACP PDUs.

The way to find out is to use the junos operational cmd : show lacp statistics interfaces ae9

root@csw01# run show lacp statistics interfaces ae9
Aggregated interface: ae9
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx
ge-2/0/44 55 21014 0 0
ge-3/0/44 55 21005 0 0

1 min later 

....

Aggregated interface: ae9
LACP Statistics: LACP Rx LACP Tx Unknown Rx Illegal Rx 
ge-3/0/44 55 21008 0 0
ge-2/0/44 55 21017 0 0

in a working LAG with LACP enabled, you should see the rx and tx LACP packets incrementing.

But my rx packets counters remains the same, while my tx counters went up. 

So the juniper is transmitting LACP PDU's but no receiving any. 

Hence the problem is most likely on the partner's side. 

On the Dell i just set , the following to get the LACP PDU's going. 

(BX400-SW1) #configure 

(BX400-SW1) (Config)#interface BX400-SW1/1/1

(BX400-SW1) (Interface BX400-SW1/1/1)#no staticcapability

After that LACP statistics shows rx and tx packets incrementing as per normal, and 

every thing works like a charm. 

Final working configuration:

Juniper side

root@csw01# run show lacp interfaces ae9
Aggregated interface: ae9
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
ge-2/0/44 Actor No No Yes Yes Yes Yes Slow Active
ge-2/0/44 Partner No No Yes Yes Yes Yes Slow Active
ge-3/0/44 Actor No No Yes Yes Yes Yes Slow Active
ge-3/0/44 Partner No No Yes Yes Yes Yes Slow Active
LACP protocol: Receive State Transmit State Mux State
ge-2/0/44 Current Slow periodic Collecting distributing
ge-3/0/44 Current Slow periodic Collecting distributing

On the Dell Side

(BX400-SW1) #show lacp interface all

Intf Role Exp Def Dist Col Syn Aggr Timeout Activity
------ ------- --- --- ---- --- --- ---- ------- --------

BX400-SW1/0/19 Actor No No Yes Yes Yes Yes Slow Active
BX400-SW1/0/19 Partner No No Yes Yes Yes Yes Slow Active
BX400-SW1/0/20 Actor No No Yes Yes Yes Yes Slow Active
BX400-SW1/0/20 Partner No No Yes Yes Yes Yes Slow Active

Thnks all for reading 

Well, at least it's now working, that's the main thing