InLoopBack接口是一种虚拟接口。InLoopBack接口由系统自动创建，用户不能进行配置和删除，但是可以显示，其物理层和链路层协议永远处于up状态。InLoopBack接口主要用于配合实现报文的路由和转发，任何送到InLoopBack接口的IP报文都会被认为是送往设备本身的，设备将不再转发这些报文
一 在同一网段没有网关为啥能ping通
PC机配置信息
如果我中间的的链路断了,业务无法通过,这样可以吗？做为专业的网络工程师这样的操作不能发生的？
链路聚合的本质是提高网络的可靠性，模式分为静态模式和动态模式，一般采用动态模式
二 华三二层静态链路聚合
操作 | 命令 | 说明 |
进入系统视图 | system-view | - |
创建二层聚合接口，并进入二层聚合接口视图 | interface bridge-aggregation interface-number | 创建二层聚合接口后，系统将自动生成同编号的二层聚合组，且该聚合组缺省工作在静态聚合模式下 |
退回系统视图 | quit | - |
进入二层以太网接口视图 | interface interface-type interface-number | 多次执行此步骤可将多个二层以太网接口加入聚合组 |
将二层以太网接口加入聚合组 | port link-aggregation group number |
[SW1]interface Bridge-Aggregation ?
<1-1024> Bridge-Aggregation interface number
[SW1]interface Bridge-Aggregation 4
[SW1-Bridge-Aggregation4]quit
[SW1]int range g1/0/4 to g1/0/7
[SW1-if-range]port link-aggregation group 4
[SW1-if-range]port link-type trunk
[SW1-if-range]port trunk permit vlan all
[SW1]display link-aggregation summary
Aggregation Interface Type:
BAGG -- Bridge-Aggregation, BLAGG -- Blade-Aggregation, RAGG -- Route-Aggregation, SCH-B -- Schannel-Bundle
Aggregation Mode: S -- Static, D -- Dynamic
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Actor System ID: 0x8000, 4e53-c0ce-0100
AGG AGG Partner ID Selected Unselected Individual Share
Interface Mode Ports Ports Ports Type
--------------------------------------------------------------------------------
BAGG4 S None 0 4 0 Shar
[SW1]display link-aggregation ve
[SW1]display link-aggregation verbose
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port: A -- Auto
Port Status: S -- Selected, U -- Unselected, I -- Individual
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
Aggregate Interface: Bridge-Aggregation4
Aggregation Mode: Static
Loadsharing Type: Shar
Port Status Priority Oper-Key
--------------------------------------------------------------------------------
GE1/0/4 U 32768 1
GE1/0/5 U 32768 1
GE1/0/6 U 32768 1
GE1/0/7 U 32768 1
[SW1]
[SW1]display link-aggregation ?
load-sharing Link aggregation load sharing
member-port Display member(s) of link aggregation group
summary Summary information
verbose Display verbose information of link aggregation group
[SW1]display link-aggregation 4
^
% Unrecognized command found at '^' position.
[SW1]
[SW1]dis
[SW1]display li
[SW1]display line
[SW1]display link-aggregation ?
load-sharing Link aggregation load sharing
member-port Display member(s) of link aggregation group
summary Summary information
verbose Display verbose information of link aggregation group
[SW1]display link-aggregation me
[SW1]display link-aggregation member-port ?
> Redirect it to a file
>> Redirect it to a file in append mode
FortyGigE FortyGigE interface
GigabitEthernet GigabitEthernet interface
Ten-GigabitEthernet Ten-GigabitEthernet interface
| Matching output
<cr>
[SW1]display link-aggregation member-port g
[SW1]display link-aggregation member-port GigabitEthernet 1/0/4
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
GigabitEthernet1/0/4:
Aggregate Interface: Bridge-Aggregation4
Port Number: 5
Port Priority: 32768
Oper-Key: 1
[SW1]display link-aggregation member-port GigabitEthernet 1/0/5
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
GigabitEthernet1/0/5:
Aggregate Interface: Bridge-Aggregation4
Port Number: 6
Port Priority: 32768
Oper-Key: 1
[SW1]display link-aggregation member-port GigabitEthernet 1/0/6
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
GigabitEthernet1/0/6:
Aggregate Interface: Bridge-Aggregation4
Port Number: 7
Port Priority: 32768
Oper-Key: 1
[SW1]display link-aggregation member-port GigabitEthernet 1/0/7
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
GigabitEthernet1/0/7:
Aggregate Interface: Bridge-Aggregation4
Port Number: 8
Port Priority: 32768
Oper-Key: 1
[SW1]display link-aggregation ?
load-sharing Link aggregation load sharing
member-port Display member(s) of link aggregation group
summary Summary information
verbose Display verbose information of link aggregation group
[SW1]display link-aggregation su
[SW1]display link-aggregation summary
Aggregation Interface Type:
BAGG -- Bridge-Aggregation, BLAGG -- Blade-Aggregation, RAGG -- Route-Aggregation, SCH-B -- Schannel-Bundle
Aggregation Mode: S -- Static, D -- Dynamic
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Actor System ID: 0x8000, 4e53-c0ce-0100
AGG AGG Partner ID Selected Unselected Individual Share
Interface Mode Ports Ports Ports Type
--------------------------------------------------------------------------------
BAGG4 S None 0 4 0 Shar
[SW1]display link-aggregation ve
[SW1]display link-aggregation verbose
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port: A -- Auto
Port Status: S -- Selected, U -- Unselected, I -- Individual
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
Aggregate Interface: Bridge-Aggregation4
Aggregation Mode: Static
Loadsharing Type: Shar
Port Status Priority Oper-Key
--------------------------------------------------------------------------------
GE1/0/4 U 32768 1
GE1/0/5 U 32768 1
GE1/0/6 U 32768 1
GE1/0/7 U 32768 1三 华三三层静态链路聚合
操作 | 命令 | 说明 |
进入系统视图 | system-view | - |
创建三层聚合接口，并进入三层聚合接口视图 | interface route-aggregation interface-number | 创建三层聚合接口后，系统将自动生成同编号的三层聚合组，且该聚合组缺省工作在静态聚合模式下 |
退回系统视图 | quit | - |
进入三层以太网接口视图 | interface interface-type interface-number | 多次执行此步骤可将多个三层以太网接口加入聚合组 |
将三层以太网接口加入聚合组 | port link-aggregation group number |
将接口的模式改为三层模式
[SW3]int
[SW3]interface ra
[SW3]interface range g
[SW3]interface range GigabitEthernet 1/0/3 to g1/0/7
[SW3-if-range]po
[SW3-if-range]port li
[SW3-if-range]port link-ty
[SW3-if-range]port link-mo
[SW3-if-range]port link-mode r
[SW3-if-range]port link-mode route
%Jul 13 23:09:53:420 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/3 changed to down.
%Jul 13 23:09:53:420 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/3 changed to down.
%Jul 13 23:09:53:420 2024 SW3 STP/6/STP_NOTIFIED_TC: Instance 0's port GigabitEthernet1/0/4 was notified a topology change.
%Jul 13 23:09:53:466 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/4 changed to down.
%Jul 13 23:09:53:466 2024 SW3 STP/6/STP_NOTIFIED_TC: Instance 0's port GigabitEthernet1/0/5 was notified a topology change.
%Jul 13 23:09:53:467 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/4 changed to down.
%Jul 13 23:09:53:510 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/5 changed to down.
%Jul 13 23:09:53:510 2024 SW3 STP/6/STP_NOTIFIED_TC: Instance 0's port GigabitEthernet1/0/6 was notified a topology change.
%Jul 13 23:09:53:511 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/5 changed to down.
%Jul 13 23:09:53:549 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/6 changed to down.
%Jul 13 23:09:53:549 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/6 changed to down.
%Jul 13 23:09:53:549 2024 SW3 STP/6/STP_NOTIFIED_TC: Instance 0's port GigabitEthernet1/0/7 was notified a topology change.
[SW3-if-range]%Jul 13 23:09:53:590 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/7 changed to down.
%Jul 13 23:09:53:590 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/7 changed to down.
%Jul 13 23:09:55:467 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/3 changed to up.
%Jul 13 23:09:55:467 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/3 changed to up.
%Jul 13 23:09:55:507 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/4 changed to up.
%Jul 13 23:09:55:507 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/4 changed to up.
%Jul 13 23:09:55:547 2024 SW3 LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/5 (IfIndex 6), neighbor's chassis ID is 4e54-0b64-0400, port ID is GigabitEthernet1/0/5.
%Jul 13 23:09:55:549 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/5 changed to up.
%Jul 13 23:09:55:549 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/5 changed to up.
%Jul 13 23:09:55:591 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/6 changed to up.
%Jul 13 23:09:55:591 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/6 changed to up.
%Jul 13 23:09:55:626 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface GigabitEthernet1/0/7 changed to up.
%Jul 13 23:09:55:627 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/7 changed to up.
%Jul 13 23:09:56:525 2024 SW3 LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/3 (IfIndex 4), neighbor's chassis ID is 4e54-0b64-0400, port ID is GigabitEthernet1/0/3.
%Jul 13 23:09:56:526 2024 SW3 LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/4 (IfIndex 5), neighbor's chassis ID is 4e54-0b64-0400, port ID is GigabitEthernet1/0/4.
%Jul 13 23:09:57:522 2024 SW3 LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/6 (IfIndex 7), neighbor's chassis ID is 4e54-0b64-0400, port ID is GigabitEthernet1/0/6.
%Jul 13 23:09:57:523 2024 SW3 LLDP/6/LLDP_CREATE_NEIGHBOR: Nearest bridge agent neighbor created on port GigabitEthernet1/0/7 (IfIndex 8), neighbor's chassis ID is 4e54-0b64-0400, port ID is GigabitEthernet1/0/7.配置三层静态链路聚合
[SW3]int
[SW3]interface r
[SW3]interface range
[SW3]interface Route-Aggregation 55
[SW3-Route-Aggregation55]quit
[SW3]int
[SW3]interface ra
[SW3]interface range g
[SW3]interface range GigabitEthernet 1/0/3 to g
[SW3]interface range GigabitEthernet 1/0/3 to GigabitEthernet 1/0/7
[SW3-if-range]po
[SW3-if-range]port
[SW3-if-range]por
[SW3-if-range]port li
[SW3-if-range]port link-
[SW3-if-range]port link-aggregation g
[SW3-if-range]port link-aggregation group 55
%Jul 13 23:11:43:563 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/3 changed to down.
[SW3-if-range]%Jul 13 23:11:43:563 2024 SW3 IFNET/3/IF_WARN: The jumboframe of the aggregate interface Route-Aggregation55 is not supported on the member port GigabitEthernet1/0/3
%Jul 13 23:11:43:564 2024 SW3 LAGG/6/LAGG_ACTIVE: Member port GE1/0/3 of aggregation group RAGG55 changed to the active state.
%Jul 13 23:11:43:569 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/3 changed to up.
%Jul 13 23:11:43:570 2024 SW3 IFNET/3/PHY_UPDOWN: Physical state on the interface Route-Aggregation55 changed to up.
%Jul 13 23:11:43:570 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Route-Aggregation55 changed to up.
%Jul 13 23:11:43:570 2024 SW3 IFNET/3/IF_WARN: The jumboframe of the aggregate interface Route-Aggregation55 is not supported on the member port GigabitEthernet1/0/4
%Jul 13 23:11:43:570 2024 SW3 LAGG/6/LAGG_ACTIVE: Member port GE1/0/4 of aggregation group RAGG55 changed to the active state.
%Jul 13 23:11:43:575 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/4 changed to down.
%Jul 13 23:11:43:576 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/4 changed to up.
%Jul 13 23:11:43:577 2024 SW3 IFNET/3/IF_WARN: The jumboframe of the aggregate interface Route-Aggregation55 is not supported on the member port GigabitEthernet1/0/5
%Jul 13 23:11:43:577 2024 SW3 LAGG/6/LAGG_ACTIVE: Member port GE1/0/5 of aggregation group RAGG55 changed to the active state.
%Jul 13 23:11:43:579 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/5 changed to down.
%Jul 13 23:11:43:580 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/5 changed to up.
%Jul 13 23:11:43:580 2024 SW3 IFNET/3/IF_WARN: The jumboframe of the aggregate interface Route-Aggregation55 is not supported on the member port GigabitEthernet1/0/6
%Jul 13 23:11:43:581 2024 SW3 LAGG/6/LAGG_ACTIVE: Member port GE1/0/6 of aggregation group RAGG55 changed to the active state.
%Jul 13 23:11:43:583 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/6 changed to down.
%Jul 13 23:11:43:584 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/6 changed to up.
%Jul 13 23:11:43:584 2024 SW3 IFNET/3/IF_WARN: The jumboframe of the aggregate interface Route-Aggregation55 is not supported on the member port GigabitEthernet1/0/7
%Jul 13 23:11:43:584 2024 SW3 LAGG/6/LAGG_ACTIVE: Member port GE1/0/7 of aggregation group RAGG55 changed to the active state.
%Jul 13 23:11:43:586 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/7 changed to down.
%Jul 13 23:11:43:586 2024 SW3 IFNET/5/LINK_UPDOWN: Line protocol state on the interface GigabitEthernet1/0/7 changed to up.
[SW3-if-range]简写
- [SW4]display history-command
- [SW4 display current-configuration
- [SW4interface Route-Aggregation 55
- [SW4quit
- [SW4 int range GigabitEthernet 1/0/3 to GigabitEthernet 1/0/7
- [SW4port link-mo route
- [SW4port link-aggregation group 55
- [SW4quit
- [SW4display link-aggregation summary
- [SW4display link-aggregation verbose
四 华三二层动态链路聚合
[SW2]interface Bridge-Aggregation 4
[SW2-Bridge-Aggregation4]display this
#
interface Bridge-Aggregation4
#
return
[SW2-Bridge-Aggregation4]link-aggregation mode dynamic
[SW2-Bridge-Aggregation4]quit
[SW2]interface range GigabitEthernet 1/0/4 to GigabitEthernet 1/0/7
[SW2-if-range]display this
#
interface GigabitEthernet1/0/4
port link-mode bridge
port link-type trunk
port trunk permit vlan all
combo enable fiber
port link-aggregation group 4
#
return
[SW2-if-range]lacp mode passive[SW2]display link-aggregation summary
Aggregation Interface Type:
BAGG -- Bridge-Aggregation, BLAGG -- Blade-Aggregation, RAGG -- Route-Aggregation, SCH-B -- Schannel-Bundle
Aggregation Mode: S -- Static, D -- Dynamic
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Actor System ID: 0x8000, 4e53-c869-0200
AGG AGG Partner ID Selected Unselected Individual Share
Interface Mode Ports Ports Ports Type
--------------------------------------------------------------------------------
BAGG4 D 0x8000, 0000-0000-0000 0 4 0 Shar
[SW2]display link-aggregation ve
[SW2]display link-aggregation verbose
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port: A -- Auto
Port Status: S -- Selected, U -- Unselected, I -- Individual
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
Aggregate Interface: Bridge-Aggregation4
Aggregation Mode: Dynamic
Loadsharing Type: Shar
System ID: 0x8000, 4e53-c869-0200
Local:
Port Status Priority Oper-Key Flag
--------------------------------------------------------------------------------
GE1/0/4 U 32768 1 {}
GE1/0/5 U 32768 1 {}
GE1/0/6 U 32768 1 {}
GE1/0/7 U 32768 1 {}
Remote:
Actor Partner Priority Oper-Key SystemID Flag
--------------------------------------------------------------------------------
GE1/0/4 5 32768 1 0x22 , 4e53-c0ce-0100 {G}
GE1/0/5 6 32768 1 0x22 , 4e53-c0ce-0100 {G}
GE1/0/6 7 32768 1 0x22 , 4e53-c0ce-0100 {G}
GE1/0/7 8 32768 1 0x22 , 4e53-c0ce-0100 {G}
[SW2]五 华三 三层动态链路聚合
[SW3-Route-Aggregation55]display this
#
interface Route-Aggregation55
#
return
[SW3-Route-Aggregation55]link-aggregation mode dynamic
[SW3-Route-Aggregation55]quit
[SW3]int range GigabitEthernet 1/0/3 to GigabitEthernet 1/0/7
[SW3-if-range]lacp mode passive
[SW3-if-range]display this
#
interface GigabitEthernet1/0/3
port link-mode route
combo enable fiber
lacp mode passive
port link-aggregation group 55
#
[SW4]interface ra
[SW4]interface range g
[SW4]interface range GigabitEthernet 1/0/3 to g
[SW4]interface range GigabitEthernet 1/0/3 to GigabitEthernet 1/0/7
[SW4-if-range]dis
[SW4-if-range]display th
[SW4-if-range]display this
#
interface GigabitEthernet1/0/3
port link-mode route
combo enable fiber
port link-aggregation group 55
#
return
[SW4-if-range]la
[SW4-if-range]lacp mo
[SW4-if-range]lacp mode pa
[SW4-if-range]lacp mode passive
[SW4-if-range]display link-aggregation verbose
Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing
Port: A -- Auto
Port Status: S -- Selected, U -- Unselected, I -- Individual
Flags: A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,
D -- Synchronization, E -- Collecting, F -- Distributing,
G -- Defaulted, H -- Expired
Aggregate Interface: Route-Aggregation55
Aggregation Mode: Dynamic
Loadsharing Type: Shar
System ID: 0x8000, 4e54-0b64-0400
Local:
Port Status Priority Oper-Key Flag
--------------------------------------------------------------------------------
GE1/0/3 S 32768 1 {CDEFG}
GE1/0/4 U 32768 1 {CG}
