Ethernet Switching
Ethernet Switching

link aggregation between EX 4200 and Cisco 3550 with LACP

05.21.08   |  
‎05-21-2008 07:41 AM

Hello,

I'm trying configure link aggregation with LACP beetwen Juniper EX4200 and Cisco 3550(Llink aggregation works without LACP).

Juniper config:

 

 

ge-0/0/2 {
ether-options {
802.3ad ae0;
}
}
ge-0/0/3 {
ether-options {
802.3ad ae0;
}
}

.....

ae1 {
aggregated-ether-options {
minimum-links 1;
link-speed 1g;
lacp {
passive;
periodic fast;
}
}
unit 0 {
family ethernet-switching;
}
}

 

 

 

Cisco config:

 

interface Port-channel1
switchport mode dynamic desirable

....

interface GigabitEthernet0/11
switchport mode dynamic desirable
channel-group 1 mode active
!
interface GigabitEthernet0/12
switchport mode dynamic desirable
channel-group 1 mode active

 

 

And cisco says:

 

May 21 18:30:06.033: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up
Cat3550-12G#sh lacp internal
May 21 18:30:07.033: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
May 21 18:30:08.305: %ETHCNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on GigabitEthernet0/12.
May 21 18:30:08.305: %PM-4-ERR_DISABLE: loopback error detected on Gi0/12, putting Gi0/12 in err-disable state
Cat3550-12G#sh lacp internal
May 21 18:30:08.337: %EC-5-COMPATIBLE: Gi0/11 is compatible with port-channel members
May 21 18:30:09.309: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/12, changed state to down
May 21 18:30:09.329: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down

 

 

Output from cisco:

 

Cat3550-12G#show lacp 1 neighbor
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode

Channel group 1 neighbors

Partner's information:

LACP port Oper Port Port
Port Flags Priority Dev ID Age Key Number State
Gi0/11 SP 0 0000.0000.0000 138s 0x0 0x0 0x0
Gi0/12 SP 127 0019.e250.f900 132s 0x2 0x203 0x34



Cat3550-12G#show lacp 1 internal
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode

Channel group 1
LACP port Admin Oper Port Port
Port Flags State Priority Key Key Number State
Gi0/11 SA indep 32768 0x1 0x1 0xC 0x7D
Gi0/12 SA down 32768 0x1 0x1 0xD 0x5

 

 

From Juniper:

 

root@sw1# run show lacp interfaces
.....
Aggregated interface: ae1
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
ge-0/0/2 Actor No Yes No No No Yes Slow Passive
ge-0/0/2 Partner No Yes No No No Yes Fast Passive
ge-0/0/3 Actor No Yes No No No Yes Slow Passive
ge-0/0/3 Partner No Yes No No No Yes Fast Passive
LACP protocol: Receive State Transmit State Mux State
ge-0/0/2 Defaulted No periodic Detached
ge-0/0/3 Port disabled No periodic Detached

 

 

Link aggregation between two EX 4200 work with LACP.

Please help me,

 

sorry for my bad english.

 

1 REPLY
Ethernet Switching

Re: link aggregation between EX 4200 and Cisco 3550 with LACP

05.22.08   |  
‎05-22-2008 01:38 AM
Cisco command "channel-protocol lacp"solved my problem