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Loopback Test Commands, Hybrid Mode

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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide 19. Loopback Test Commands (Hybrid Mode Only) 19-1 loopback This command is used to configure the loopback mode of the physical port interfaces and to start testing. Use the no form of this command to clear the loopback setting and stop testing. loopback {internal | external} {mac | phy [copper | fiber]} no loopback Parameters internal external mac phy copper fiber Specifies the internal loopback mode. MAC or PHY is set to internal loopback, and the CPU begins to send packets continuously to the port. All packets sent by the CPU are looped back to it, and then CPU checks the received packets to determine whether the packet path between the CPU, and MAC or PHY is correct. Specifies the external loopback mode. MAC or PHY is set to external loopback (line loopback) mode. Packets sent by external traffic generator are looped back at the MAC or PHY layer, and sent back to the external traffic generator. The external traffic generator can then check the received packets to determine whether the packet path between MAC or PHY, and the external traffic generator is correct. Specifies to loop back at the MAC layer. Specifies to loop back at the PHY layer. (Optional) Specifies to test medium to copper. (Optional) Specifies to test medium to fiber. Default None. Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline This command is only available for physical ports. 173

Section	Page
Table of Contents	2
1. Introduction	3
Audience	3
Other Documentation	3
Conventions	3
Notes, Notices, and Cautions	3
Command Descriptions	4
Command Modes	4
User EXEC Mode at Basic User Level	5
Privileged EXEC Mode at Operator Level	5
Privileged EXEC Mode at Administrator Level	6
Global Configuration Mode	6
Interface Configuration Mode	6
Creating a User Account	6
Interface Notation	7
Error Messages	8
Editing Features	8
Display Result Output Modifiers	9
2. Basic CLI Commands	11
2-1 help	11
Parameters	11
Default	11
Command Mode	11
Command Default Level	11
Usage Guideline	11
Example	11
2-2 enable	12
Parameters	12
Default	12
Command Mode	13
Command Default Level	13
Usage Guideline	13
Example	13
2-3 disable	13
Parameters	13
Default	13
Command Mode	13
Command Default Level	13
Usage Guideline	13
Example	14
2-4 configure terminal	14
Parameters	14
Default	14
Command Mode	14
Command Default Level	14
Usage Guideline	14
Example	14
2-5 login (EXEC)	14
Parameters	14
Default	15
Command Mode	15
Command Default Level	15
Usage Guideline	15
Example	15
2-6 login (Line)	15
Parameters	15
Default	15
Command Mode	15
Command Default Level	15
Usage Guideline	16
Example	16
2-7 logout	17
Parameters	17
Default	17
Command Mode	17
Command Default Level	17
Usage Guideline	17
Example	17
2-8 end	17
Parameters	17
Default	17
Command Mode	17
Command Default Level	18
Usage Guideline	18
Example	18
2-9 exit	18
Parameters	18
Default	18
Command Mode	18
Command Default Level	18
Usage Guideline	18
Example	18
2-10 show history	19
Parameters	19
Default	19
Command Mode	19
Command Default Level	19
Usage Guideline	19
Example	19
2-11 password-recovery	19
Parameters	19
Default	20
Command Mode	20
Command Default Level	20
Usage Guideline	20
Example	20
2-12 show environment	20
Parameters	20
Default	21
Command Mode	21
Command Default Level	21
Usage Guideline	21
Example	21
Display Parameters	21
2-13 show unit	21
Parameters	22
Default	22
Command Mode	22
Command Default Level	22
Usage Guideline	22
Example	22
2-14 show cpu utilization	22
Parameters	22
Default	23
Command Mode	23
Command Default Level	23
Usage Guideline	23
Example	23
2-15 show version	23
Parameters	24
Default	24
Command Mode	24
Command Default Level	24
Usage Guideline	24
Example	24
2-16 environment temperature threshold	24
Parameters	24
Default	25
Command Mode	25
Command Default Level	25
Usage Guideline	25
Example	25
2-17 show memory utilization	25
Parameters	25
Default	25
Command Mode	25
Command Default Level	25
Usage Guideline	25
Example	26
2-18 console-usb-timeout (Hybrid Mode Only)	26
Parameters	26
Default	26
Command Mode	26
Command Default Level	27
Usage Guideline	27
Example	27
2-19 console-usb (Hybrid Mode Only)	27
Parameters	27
Default	27
Command Mode	27
Command Default Level	27
Usage Guideline	27
Example	27
2-20 privilege (Hybrid Mode Only)	28
Parameters	28
Default	28
Command Mode	28
Command Default Level	28
Usage Guideline	28
Example	28
2-21 show privilege	28
Parameters	28
Default	29
Command Mode	29
Command Default Level	29
Usage Guideline	29
Example	29
3. Access Management Commands	30
3-1 banner login	30
Parameters	30
Default	30
Command Mode	30
Command Default Level	30
Usage Guideline	30
Example	30
3-2 do	31
Parameters	31
Default	31
Command Mode	31
Command Default Level	31
Usage Guideline	31
Example	31
3-3 prompt	31
Parameters	32
Default	32
Command Mode	32
Command Default Level	32
Usage Guideline	32
Example	32
3-4 enable password	32
Parameters	32
Default	33
Command Mode	33
Command Default Level	33
Usage Guideline	33
Example	33
3-5 ip http server (Hybrid Mode Only)	33
Parameters	33
Default	33
Command Mode	33
Command Default Level	33
Usage Guideline	34
Example	34
3-6 ip http secure-server (Hybrid Mode Only)	34
Parameters	34
Default	34
Command Mode	34
Command Default Level	34
Usage Guideline	34
Example	34
3-7 ip http secure-server ssl-service-policy	34
Parameters	35
Default	35
Command Mode	35
Command Default Level	35
Usage Guideline	35
Example	35
3-8 ip http service-port (Hybrid Mode Only)	35
Parameters	35
Default	35
Command Mode	35
Command Default Level	35
Usage Guideline	36
Example	36
3-9 ip http timeout-policy idle (Hybrid Mode Only)	36
Parameters	36
Default	36
Command Mode	36
Command Default Level	36
Usage Guideline	36
Example	36
3-10 ip telnet server	36
Parameters	37
Default	37
Command Mode	37
Command Default Level	37
Usage Guideline	37
Example	37
3-11 ip telnet service port	37
Parameters	37
Default	37
Command Mode	37
Command Default Level	37
Usage Guideline	37
Example	38
3-12 line	38
Parameters	38
Default	38
Command Mode	38
Command Default Level	38
Usage Guideline	38
Example	38
3-13 service password-recovery	38
Parameters	38
Default	39
Command Mode	39
Command Default Level	39
Usage Guideline	39
Example	39
3-14 service password-encryption	39
Parameters	39
Default	39
Command Mode	39
Command Default Level	39
Usage Guideline	39
Example	40
3-15 show terminal	40
Parameters	40
Default	40
Command Mode	40
Command Default Level	40
Usage Guideline	40
Example	40
3-16 show ip telnet server (Hybrid Mode Only)	41
Parameters	41
Default	41
Command Mode	41
Command Default Level	41
Usage Guideline	41
Example	41
3-17 show ip http server (Hybrid Mode Only)	41
Parameters	41
Default	41
Command Mode	41
Command Default Level	41
Usage Guideline	42
Example	42
3-18 show ip http secure-server	42
Parameters	42
Default	42
Command Mode	42
Command Default Level	42
Usage Guideline	42
Example	42
3-19 show password-recovery	42
Parameters	42
Default	43
Command Mode	43
Command Default Level	43
Usage Guideline	43
Example	43
3-20 show users	43
Parameters	43
Default	43
Command Mode	43
Command Default Level	43
Usage Guideline	43
Example	44
3-21 telnet (Hybrid Mode Only)	44
Parameters	44
Default	44
Command Mode	44
Command Default Level	44
Usage Guideline	44
Example	45
3-22 terminal length	45
Parameters	45
Default	46
Command Mode	46
Command Default Level	46
Usage Guideline	46
Example	46
3-23 terminal speed	46
Parameters	46
Default	46
Command Mode	47
Command Default Level	47
Usage Guideline	47
Example	47
3-24 session-timeout	47
Parameters	47
Default	47
Command Mode	47
Command Default Level	47
Usage Guideline	47
Example	48
3-25 terminal width	48
Parameters	48
Default	48
Command Mode	48
Command Default Level	48
Usage Guideline	48
Example	49
3-26 username	49
Parameters	49
Default	49
Command Mode	50
Command Default Level	50
Usage Guideline	50
Example	50
3-27 password	50
Parameters	50
Default	51
Command Mode	51
Command Default Level	51
Usage Guideline	51
Example	51
3-28 clear line	51
Parameters	51
Default	51
Command Mode	51
Command Default Level	51
Usage Guideline	51
Example	52
3-29 banner exec	52
Parameters	52
Default	52
Command Mode	52
Command Default Level	52
Usage Guideline	52
Example	52
3-30 exec-banner	53
Parameters	53
Default	53
Command Mode	53
Command Default Level	53
Usage Guideline	53
Example	53
3-31 outgoing-session-timeout (Hybrid Mode Only)	53
Parameters	53
Default	53
Command Mode	53
Command Default Level	54
Usage Guideline	54
Example	54
3-32 terminal monitor	54
Parameters	54
Default	54
Command Mode	54
Command Default Level	54
Usage Guideline	54
Example	55
4. Alias Commands (Hybrid Mode Only)	56
4-1 alias	56
Parameters	56
Default	56
Command Mode	56
Command Default Level	56
Usage Guideline	56
Example	56
4-2 show aliases	57
Parameters	57
Default	57
Command Mode	57
Command Default Level	57
Usage Guideline	57
Example	57
5. Authentication, Authorization, and Accounting (AAA) Commands	58
5-1 aaa accounting commands	58
Parameters	58
Default	58
Command Mode	58
Command Default Level	58
Usage Guideline	58
Example	58
5-2 aaa accounting exec	59
Parameters	59
Default	59
Command Mode	59
Command Default Level	59
Usage Guideline	59
Example	59
5-3 aaa accounting network (Hybrid Mode Only)	60
Parameters	60
Default	60
Command Mode	60
Command Default Level	60
Usage Guideline	60
Example	60
5-4 aaa accounting system	61
Parameters	61
Default	61
Command Mode	61
Command Default Level	61
Usage Guideline	61
Example	61
5-5 aaa authentication enable	62
Parameters	62
Default	62
Command Mode	62
Command Default Level	62
Usage Guideline	62
Example	62
5-6 aaa authentication login	62
Parameters	63
Default	63
Command Mode	63
Command Default Level	63
Usage Guideline	63
Example	63
5-7 aaa group server radius	64
Parameters	64
Default	64
Command Mode	64
Command Default Level	64
Usage Guideline	64
Example	64
5-8 aaa group server tacacs+	64
Parameters	64
Default	65
Command Mode	65
Command Default Level	65
Usage Guideline	65
Example	65
5-9 aaa new-model	65
Parameters	65
Default	65
Command Mode	65
Command Default Level	65
Usage Guideline	65
Example	66
5-10 accounting commands	66
Parameters	66
Default	66
Command Mode	66
Command Default Level	66
Usage Guideline	66
Example	66
5-11 accounting exec	67
Parameters	67
Default	67
Command Mode	67
Command Default Level	67
Usage Guideline	67
Example	67
5-12 clear aaa counters servers	67
Parameters	67
Default	68
Command Mode	68
Command Default Level	68
Usage Guideline	68
Example	68
5-13 ip http authentication aaa login-authentication (Hybrid Mode Only)	68
Parameters	68
Default	68
Command Mode	69
Command Default Level	69
Usage Guideline	69
Example	69
5-14 ip http accounting exec (Hybrid Mode Only)	69