随着国产H3C、华为交换机网络设备稳定、质量可靠，低价格等优势。国内的网络建设项目中，一般采用国产设备比较多。

因前期大量采用国外CISCO公司的产品，现需要改造时，就面临：CISCO与国产设备的对接问题。

二层交接中，CISCO与H3C双链路绑定时，可以这样配置。


H3C config:

interface Bridge-Aggregation1
link-aggregation mode dynamic
port link-type trunk
port trunk permit vlan all

 interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk permit vlan all
 port link-aggregation group 1

interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk permit vlan all
 port link-aggregation group 1

cisco config：

 interface Port-channel1
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface FastEthernet0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode (on) active
!
interface FastEthernet0/2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode (on) active

      
   配置可以保证通，但当链路出现故障时，可以切换过去，链路恢复正常以后，原来的绑定端口会被DISABLE。

[h3c5600]display link-aggregation verbose
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Flags:  A -- LACP_Activity, B -- LACP_timeout, C -- Aggregation,
        D -- Synchronization, E -- Collecting, F -- Distributing,
        G -- Defaulted, H -- Expired
Aggregation ID: 1,  AggregationType: Dynamic,   Loadsharing Type: Shar
Aggregation Description: TEST-cisco
System ID: 0x8000, 3ce5-a631-c66b
Port Status: S -- Selected,  U -- Unselected
Local:
Port                     Status  Priority  Key    Flag
--------------------------------------------------------------------------------
GigabitEthernet1/0/27    S       32768     1      {ACDEF}
GigabitEthernet1/0/28    S       32768     1      {ACDEF}
Remote:
Actor                    Partner Priority Key   SystemID                     Flag
--------------------------------------------------------------------------------
GigabitEthernet1/0/27    26      32768    1     0x8000,dc7b-9449-6c80 {CDEF}
GigabitEthernet1/0/28    25      32768    1     0x8000,dc7b-9449-6c80 {CDEF}

[h3c5600]display link-aggregation summary
Aggregation Group Type:D -- Dynamic, S -- Static , M -- Manual
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Actor ID: 0x8000, 3ce5-a631-c66b
  AL  AL   Partner ID            Select Unselect Share Master
  ID  Type                       Ports  Ports    Type  Port
--------------------------------------------------------------------------------
  1   D    0x8000,dc7b-9449-6c80 2      0        Shar  GigabitEthernet1/0/27

要求CISCO交换机上，启用链路恢复检查。

在CISCO 端添加链路检测命令：
 
errdisable recovery cause udld
errdisable recovery cause bpduguard
errdisable recovery cause channel-misconfig
errdisable recovery cause pagp-flap
errdisable recovery cause dtp-flap
errdisable recovery cause link-flap
errdisable recovery cause l2ptguard
errdisable recovery cause gbic-invalid
errdisable recovery cause unicast-flood
errdisable recovery cause vmps
errdisable recovery cause loopback
errdisable recovery interval 30
ip subnet-zero
 
以防线路故障以后，交换机端口死掉，不起来。
 

<H3C>display 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, 586a-b1ad-8498
Local:
  Port             Status  Priority Oper-Key  Flag
--------------------------------------------------------------------------------
  GE1/0/26         U       20       2         {AC}
  GE1/0/27         S       20       2         {ACDEF}
Remote:
  Actor            Partner Priority Oper-Key  SystemID               Flag
--------------------------------------------------------------------------------
  GE1/0/26         25      32768    1         0x8000, 0011-5c19-2180 {CEF}
  GE1/0/27         26      32768    1         0x8000, 0011-5c19-2180 {CDEF}
<H3C>