Aggregate docking between Cisco devices and H3C S12500 devices

Aggregation has two-layer aggregation and three-layer aggregation, and what we are discussing here is two-layer aggregation. 

Cisco devices dock with H3C S12500. Our company has two types of aggregation: dynamic aggregation and static aggregation. For Cisco's aggregation, one is manual aggregation and the other is called self-negotiation. 

Cisco's Manual Way: This is a simple way to set the mode of "on" on both ends of the port member link and configure the format of channel-group <number group number>mode on. Our device uses static aggregation to dock with Cisco in this way. 

Cisco's Automation: Cisco Automation has two protocols: PAgP (port Aggregation Protocal) and LACP (Link Aggregation Control Protocl). 

For PAgP: This is Cisco's Port Private Aggregation Protocol. There are auto and desirable methods. Since this is a private agreement, our equipment cannot be docked to it. 

For LACP: the standard port aggregation protocol 802.3ad, Cisco has active and passive modes.Because it is a standard agreement, both modes can be connected with our equipment.

Static aggregation docking: Our company uses static aggregation, Cisco uses manual aggregation, mode is on, guarantees the speed and duplex at both ends are consistent. 

Cisco configuration: Since the lab only has Cisco's Gigabit port, the Gigabit port docking is used:  

interface FastEthernet0/3

 switchport trunk encapsulation dot1q

 switchport mode trunk

 speed 100

 duplex full

 channel-group 1 mode on

! 

interface FastEthernet0/11

 switchport trunk encapsulation dot1q

 switchport mode trunk

 speed 100

 duplex full

 channel-group 1 mode on

!

interface Port-channel1

 description Connect_H3C

 switchport trunk encapsulation dot1q

 switchport mode trunk

S12500 Configuration:

interface Bridge-Aggregation1

 port link-type trunk

 port trunk permit vlan all

 #

interface GigabitEthernet6/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 speed 100

 duplex full

 port link-aggregation group 1

#

interface GigabitEthernet6/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 speed 100

 duplex full

 port link-aggregation group 1

Once the configuration is complete, you can see that the aggregation was successfully established.

C3550#show interfaces port-channel 1 etherchannel 

Age of the Port-channel   = 7d:16h:20m:41s

Logical slot/port   = 1/0          Number of ports = 2

GC                  = 0x00000000      HotStandBy port = null

Port state          = Port-channel Ag-Inuse

Protocol            =    -

Port security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits

------+------+------+------------------+-----------

  0     00     Fa0/3    On                 0

  0     00     Fa0/11   On                 0

Test connectivity:

C3550#ping 10.0.0.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

Dynamic Aggregation: Our device uses dynamic aggregation, Cisco device uses automatic aggregation, experimental tests, Cisco side mode of use is active/passive can be aggregated successfully.

Dynamic Aggregation Cisco Configuration:

interface Port-channel1

 switchport trunk encapsulation dot1q

 switchport mode trunk

 !

interface FastEthernet0/3

 switchport trunk encapsulation dot1q

 switchport mode trunk

 speed 100

 duplex full

 channel-protocol lacp

 channel-group 1 mode active/passive

 !

interface FastEthernet0/11

 switchport trunk encapsulation dot1q

 switchport mode trunk

 speed 100

 duplex full

 channel-protocol lacp

 channel-group 1 mode active/passive

S12500 Configuration:

interface Bridge-Aggregation1

 port link-type trunk

 port trunk permit vlan all

 link-aggregation mode dynamic

 #

interface GigabitEthernet6/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 speed 100

 duplex full

 port link-aggregation group 1

#

interface GigabitEthernet6/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan all

 speed 100

 duplex full

 port link-aggregation group 1

When configured as active:

C3550#show interfaces port-channel  1 etherchannel 

Port-channel1   (Primary aggregator)

Age of the Port-channel   = 0d:00h:08m:55s

Logical slot/port   = 1/0          Number of ports = 2

HotStandBy port = null

Port state          = Port-channel Ag-Inuse

Protocol            =   LACP

Port security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits

------+------+------+------------------+-----------

  0     00     Fa0/3    Active             0

  0     00     Fa0/11   Active             0

When configuring passive:

C3550#show interfaces port-channel 1 etherchannel 

Port-channel1   (Primary aggregator)

Age of the Port-channel   = 8d:14h:07m:05s

Logical slot/port   = 1/0          Number of ports = 2

HotStandBy port = null

Port state          = Port-channel Ag-Inuse

Protocol            =   LACP

Port security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits

------+------+------+------------------+-----------

  0     00     Fa0/3    Passive            0

  0     00     Fa0/11   Passive            0

The display on our equipment is as follows:

[H3C]dis link-aggregation verbose 

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Aggregation Interface: Bridge-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x8000, 0023-8911-7c00

Local:

  Port             Status  Priority Oper-Key  Flag

--------------------------------------------------------------------------------

  GE6/0/1          S       32768    3         {ACDEF}

  GE6/0/3          S       32768    3         {ACDEF}

Remote:

  Actor            Partner Priority Oper-Key  SystemID               Flag

--------------------------------------------------------------------------------

  GE6/0/1          4       32768    1         0x8000, 0013-6002-6d00 {CDEF}

  GE6/0/3          12      32768    1         0x8000, 0013-6002-6d00 {CDEF}

Aggregation Interface: Bridge-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x8000, 0023-8911-7c00