Supermicro L2 User manual

--
L2 / L3 Switches
Simple Network Management Protocol
(SNMP)
Configuration Guide
Revision 1.0

SNMP Configuration Guide
Supermicro L2/L3 Switches Configuration Guide
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SNMP Configuration Guide
Supermicro L2/L3 Switches Configuration Guide
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anual Revision 1.0
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Contents
1 SN P Configuration Guide ................................................................................................................... 5
1.1 SN P Basics .................................................................................................................................. 5
1.2 SN P Support ............................................................................................................................... 7
1.3 Interface Numbers ........................................................................................................................ 8
1.4 SN P Defaults .............................................................................................................................. 9
1.5 Enable/Disable SN P Agent ....................................................................................................... 10
1.6 Access control ............................................................................................................................. 10
1.6.1 Engine Identifier .................................................................................................................. 11
1.6.2 Community .......................................................................................................................... 12
1.6.3 User ..................................................................................................................................... 13
1.6.4 Group .................................................................................................................................. 15
1.6.5 View..................................................................................................................................... 17
1.6.6 Group Access ....................................................................................................................... 19
1.7 Trap ............................................................................................................................................. 21
1.7.1 Target Address .................................................................................................................... 21
1.7.2 Target Parameters .............................................................................................................. 22
1.7.3 SN P Notify ........................................................................................................................ 24
1.7.4 Trap UDP Port ..................................................................................................................... 26
1.7.5 Authentication traps ........................................................................................................... 27
1.8 Sub-Agent .................................................................................................................................... 27
1.9 SN P configuration example ..................................................................................................... 29

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1SNMP Configuration Guide
This document describes the Simple Network anagement Protocol (SN P) feature supported in
Supermicro Layer 2 / Layer 3 switch products.
This document covers the SN P configurations for the Supermicro switch products listed below.
The majority of this document applies to all the above listed Supermicro switch products. The content of
any particular sub section however, might vary across these switch product models. In those sections
the differences are clearly identified with reference to particular switch product models. If any particular
switch product model is not referenced, the reader can safely assume that the content is applicable to
all the above listed models.
Throughout this document, the common term “switch” refers to any of the above listed
Supermicro switch product models unless a particular switch product model is noted.
1.1 SNMP Basics
SN P helps to monitor and manage the switches from network management systems (N S). SN P
solutions contain three major components – SN P manager, SN P agent and IB ( anagement
Information Base) as shown in Figure – SN P-1.
The SN P IB contains all the configuration and status information of the switch. IB is organized in a
tree structure with branches and leaf nodes. Each node contains an object of information and is
identified with an object identifier (OID). SN P IB is stored and maintained in the switch.
Top of Rack Switches
• SSE-G24-TG4
• SSE-G48-TG4
• SSE-X24S
• SSE-X3348S
• SSE-X3348T
Blade Switches
• SB -GE -X2C
• SB -GE -X2C+
• SB -GE -X3S+
• SB -XE -X10S

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The SN P agent also resides on the switch. It processes the SN P requests received from the SN P
manager. It sends responses to SN P managers by retrieving required information from the IB. It also
updates the IB based on SN P messages sent by the SN P managers. SN P agents also send
voluntary traps to SN P managers. Traps are sent to alert the SN P managers on events happening on
the switch.
The SN P manager is an N S application. It monitors and manages switches by communicating to the
SN P agents running on the switch. The SN P manager application provides command or graphical
interfaces to the network administrators to help them manage the networks.
There are three versions of SN P protocols available.
US (User based Security odel) and VAC (View based Access Control odel) are the main features
in SN Pv3. US provides user authentication and message encryption. VAC provides IB access
control by associating views and users.
SN Pv3 uses a combination of security model and security level to define switch access. Security model
specifies the authentication mechanism for the user and the group to which the user belongs. The
security models in the Supermicro switch are v1, v2c and v3.
SN P
anager
MIB
SNMP
AGENT
Switch
SN P essages
Figure SNMP-1: SNMP S stems
SNMPv2c
SNMPv1
First version
of SNMP
protocol
* Improvements over SNMPv1
* Communit string based administration
* 64 bit counters support
* getbulk support to retrieve large info
* Introduced inform messages
* Improved error handling
SNMPv3
Improvements over
SNMPv2c
Improved authentication -
based on SNMP engine ID
Improved securit -
encr pted information

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Security level specifies the permitted security within the particular security model. The security levels in
Supermicro switches are
•NoAuthNoPriv
•AuthNoPriv
•AuthPriv
The security model and level combinations possible in Supermicro switch are listed in the table below.
Security
odel
Security Level
Authentication
Encryption
Purpose
V1 noAuthNoPriv Community string None
Community string and
community user are used to
authenticate user login.
V2c noAuthNoPriv Community string None
Community string and
community user are used to
authenticate user login.
V3 noAuthNoPriv User name None
User configuration is used to
authenticate user login.
V3 Auth D5 or SHA None
D5 or SHA algorithm is
used to verify user login.
V3 Priv None DES
DES is used to encrypt all
SN P messages.
SN P uses multiple messages between managers and agents. The below table describes the SN P
messages.
essage Type
Originator
Receiver
Purpose
get
-
request
anager
Agent
To
get the value of a particular IB object
get
-
next
-
request
anager
Agent
To get the value of the next object in
a table
get-bulk-request anager Agent
To get the value
s
of
multiple
IB object
s in
one transaction
get-response Agent aster
Response for
get
-
request, get
-
next
-
request
and get-bulk-request messages.
s
et
-
request
anager
Agent
To
set
the value of a particular IB object
T
rap
Agent
aster
To notify the events occurring on agents
Inform
Agent
aster
To guarantee
delivery of
traps to anager
1.2 SNMP Support
Supermicro switches support three versions of SN P: SN Pv1, SN Pv2c and SN Pv3.
A switch supports 50 users, 50 groups, 50 views and 50 views.

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1.3 Interface Numbers
IF- IB contains information about all the interfaces on the switch. Users can access the interface
specific IB object values using interface index (ifIndex) numbers. The ifIndex numbers are assigned by
switch software for every physical and logical interface. The table below shows ifIndex to interface
mapping method.
Inter
face T pe
ifIndex
1Gig physical interfaces
Start
s
from 1 and goes up
to
the
maximum number of 1Gig interfaces
available on the switch.
For SSE-G24-TG4, SB -GE -X2C, SB -GE -X2C+, SB -GE -X3S+: 1 to 24
For SSE-G48-TG4: 1 to 48
For SSE-X24S and SB -XE -X10S: 1
For SSE-X3348S: 1 to 2
For SSE-X3348T: 1 to 2
10Gig physical interfaces
Start
s
after 1Gig ifIndexes and goes up to
the
maximum number of 10Gig
interfaces available on the switch.
For SSE-G24-TG4, SB -GE -X2C, SB -GE -X2C+, SB -GE -X3S+: 25 to 28
For SSE-G48-TG4: 49 to 52
For SSE-X24S and SB -XE -X10S: 2 to 25
For SSE-X3348S: 3 to 50
For SSE-X3348T: 3 to 50
40Gig physical interfaces
Start
s
g after 10Gig ifIndexes and goes up to
the
maximum number of 40Gig
interfaces available on the switch.
For SSE-X3348S: 51 to 54
For SSE-X3348T: 51 to 54
Port channel interfaces
Start
s
after 10Gig / 40Gig ifIndexes and goes up to
the
maximum number of
port channel interfaces supported on the switch.
For SSE-G24-TG4, SB -GE -X2C, SB -GE -X2C+, SB -GE -X3S+: 29 to 52
For SSE-G48-TG4: 53 to 76
For SSE-X24S and SB -XE -X10S: 26 to 49
For SSE-X3348S: 55 to 78
For SSE-X3348T: 55 to 78
Layer 3 interfaces
Start
s
after port channel ifIndexes and goes up to
the
maximum number of
layer 3 interfaces supported on the switch.
On switch models SSE-G24-TG4, SSE-G48-TG4, SSE-X24S, SSE-X3348S and
SSE-X3348T, the default VLAN 1 and stacking VLAN 4069 takes the first two
layer 3 ifIndexes.
On switch models SB -GE -X2C, SB -GE -X2C+, SB -GE -X3S+ and
SB -XE -X10S, the first three layer 3 ifIndexes are assigned for C 1 IP
interface, C 2 IP interface and stacking VLAN 4069.
User created layer 3 interfaces follow the above ifIndexes.

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In stacking cases, the port channel interface ifIndex starts after the physical interfaces of all the stack
switches. The ifIndexes for all the stack physical interfaces are assigned irrespective of the presence of
the particular member switch.
1.4 SNMP Defau ts
Function Default Value
SN P Agent
S
tatus
Enabled
SN P Sub
-
Agent
S
tatus
Disabled
Version
3
Engine Id
80.00.08.1c.04.46.53
Communities
PUBLIC
,
NET AN
Users
i
nitial,
Template D5,
TemplateSHA
Authentication
(for default users)
initial : none
Template D5: D5
TemplateSHA: SHA
Privacy
(for default users)
initial : none
Template D5: none
TemplateSHA: DES
Groups
iso,
initial
Access
iso,
initial
View (for default groups)
iso:
iso,
initial: restricted
Notify View Name
iss,
iss1
Read, Write, Notify
I
so
Target Parameters
Internet,
test1
Storage
T
ype
Volatile
Context
None
SN P Port
161
SN P Trap
P
ort
162
Trap
S
tatus
Enabled
Authentication Trap
Disabled
Switch 0
1G | 10G | 40G
Switch 1
1G | 10G | 40G
Switch 2 to Switch 16
Similar to Switch 0 and 1
Port
Channel
La er 3
Interfaces

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1.5 Enab e/Disab e the SNMP Agent
The SN P Agent is enabled by default in Supermicro switches.
Follow the steps below to disable the SN P agent.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
disable snmpagent
Disables the
SN P agent
Step 3
end
Exits the configuration mode.
Step 4
show
snmp
Displays the
SN P
information.
Step 5
write startup
-
config
Optional step
–
saves this
SN P
configuration to be part of the startup
configuration.
The
“
enable
snmp
agent
”
command
enables the
SN P
agent
.
To enable the SN P agent, it must be in the disabled state. The SN P subagent is disabled
by default. If needed, use the command “disable snmp subagent” to disable the SN P
subagent feature.
The examples below show ways to disable/enable the SN P agent function on Supermicro switches.
Disable the SNMP agent.
S IS# configure terminal
S IS(config)# disable snmpagent
S IS(config)# end
Enable the SNMP agent.
S IS# configure terminal
S IS(config)# enable snmpagent
S IS(config)# end
1.6 Access Contro
There are various parameters that control access to the SN P Agent.
•Engine ID

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•Community String
•User
•Group
•Group Access
1.6.1 Engine Identifier
The SN P Engine Identifier is a unique identifier for the SN P agent in a switch. It is used with a
hashing function in the agent to generate keys for authentication and encryption. Hence after any
change in the Engine Identifier, the following must be re-configured:
•SN Pv3 authentication
•SN Pv3 encryption/privacy
•Community
Follow the steps below to configure the SN P Engine Identifier.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp engineid <EngineIdentifier>
Configu
r
es the
SN
P Engine Identifier.
EngineIdentifier- Hexadecimal number,
with length between 5 and 32 octets.
Each octet should be separated by a
period.
Step 3
end
Exits the configuration mode.
Step 4
show snmp engineID
Displays the SN P
engine Identifier
information.
Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of the startup
configuration.
The example below shows the commands used to configure the SN P Engine Identifier.
S IS# configure terminal
S IS(config)# snmp engineid 80.00.08.1c.44.44
S IS(config)# end
S IS# show snmp engineid
EngineId: 80.00.08.1c.44.44

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The
“no snmp engineid”
command
resets the SN P engineid to its default value of
80.00.08.1c.04.46.53.
1.6.2 Community
An SN P community defines a group of devices and management systems. Only devices and
management systems that are members of the same community can exchange SN P messages. A
device or management system can be a member of multiple communities.
The SN P v1/v2 community is also used as a form of security. The community of SN P managers that
can access the agent IB in the switch is defined by a community string.
Follow the steps below to configure an SN P community.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp communit index <Communit Index> name
<Communit Name> securit <Securit Name>
[context <name>] [{volatile | nonvolatile}]
[transporttag <TransportTagIdentifier | none>]
Configu
r
es the SN
P
c
ommunity.
CommunityIndex –Alphanumeric value
with a maximum of 32 characters.
CommunityName –Alphanumeric value
with a maximum of 255 characters.
SecurityName – This is the user name
associated with the community.
Alphanumeric value with a maximum of
40 characters.
Name – Alphanumeric value with a
maximum of 40 characters.
TransportTagIdentifier – Identifies the
transport end points between agent
and manager. Alphanumeric value with
a maximum of 255 characters.
Step 3
end
Exits the configuration
mode.
Step 4
show snmp
communit
Displays the SN P
community
information.
Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of the startup
configuration.

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The
“
no snmp communit index <Communit Index>
”
command
deletes
the
specified
community index.
The example below shows the commands used to configure the SN P community.
S IS(config)# snmp communit index test1 name test1 securit user1 nonvolatile
S IS(config)# show snmp communit
Community Index: NET AN
Community Name: NET AN
Security Name: none
Context Name:
Transport Tag:
Storage Type: Volatile
Row Status: Active
------------------------------
Community Index: PUBLIC
Community Name : PUBLIC
Security Name: none
Context Name :
Transport Tag:
Storage Type: Volatile
Row Status: Active
------------------------------
Community Index: test1
Community Name: test1
Security Name: user1
Context Name:
Transport Tag:
Storage Type: Non-volatile
Row Status: Active
------------------------------
1.6.3 User
SN P user configuration is used only for SN Pv3. An SN P user requests and receives information
about switch status and traps.
Follow the steps below to configure an SN P user.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp user <UserName> [auth {md5 | sha}
Configu
r
es the SN
P user,

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<passwd>
[priv DES <passwd>]]
[{volatile | nonvolatile}]
authentication and encryption.
UserName - Alphanumeric value with a
maximum of 40 characters.
Use auth to enable authentication for
the user.
Passwd – Password used for user
Authentication. Alphanumeric value
with a maximum of 40 characters.
Use priv to enable encryption of
packets.
Passwd – Password used to generate
keys for encryption of messages.
Alphanumeric value with a maximum of
40 characters.
Use volatile if the value need not be
stored in NVRA .
Use nonvolatile if the value must be
stored in NVRA and available after
restart.
Step
3
end
Exits the configuration mode.
Step 4
show snmp
user
Displays the SN P
user
information.
Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of the startup
configuration.
The
“
no snmp user <UserName>
”
command
deletes
the
specified user.
The example below shows the commands used to configure the SN P user.
S IS# configure terminal
S IS(config)# snmp user user5 auth md5 abc123 priv DES x z123
S IS# end

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S IS# show snmp user
Engine ID: 80.00.08.1c.04.46.53
User: user5
Authentication Protocol: D5
Privacy Protocol: DES_CBC
Storage Type: Volatile
Row Status: Active
------------------------------
Engine ID: 80.00.08.1c.04.46.53
User: initial
Authentication Protocol: None
Privacy Protocol: None
Storage Type: Volatile
Row Status: Active
------------------------------
Engine ID: 80.00.08.1c.04.46.53
User: template D5
Authentication Protocol: D5
Privacy Protocol: None
Storage Type: Volatile
Row Status: Active
------------------------------
Engine ID: 80.00.08.1c.04.46.53
User: templateSHA
Authentication Protocol: SHA
Privacy Protocol: DES_CBC
Storage Type: Volatile
Row Status: Active
------------------------------
1.6.4 Group
A group identifies a set of users in SN Pv3.
Follow the steps below to configure an SN P group.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp group <GroupName> user <UserName>
securit -model {v1 | v2c | v3 } [{volatile |
nonvolatile}]
Configu
r
es the
SN
P group.
roupName – Alphanumeric value with
a maximum of 40 characters.
Security-model – Use v1 or v2c or v3.
UserName - Alphanumeric value with a

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maximum of 40 characters.
Use volatile if the value need not be
stored in NVRA .
Use nonvolatile if the value must be
stored in NVRA and available after
restart.
Step 3
end
Exits the configuration mode.
Step 4
show snmp
group
Displays the SN P
group
information.
Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of the startup
configuration.
The
“
no snmp group <GroupName> user <UserName>
securit
-
model {v1 | v2c | v3
}
”
command deletes the specified group.
The example below shows the commands used to configure the SN P group.
S IS# configure terminal
S IS(config)# snmp group group5 user user5 securit -model v3
S IS# end
S IS# show snmp group
Security odel: v1
Security Name: none
Group Name: iso
Storage Type: Volatile
Row Status: Active
------------------------------
Security odel: v2c
Security Name: none
Group Name: iso
Storage Type: Volatile
Row Status: Active
------------------------------
Security odel: v3
Security Name: user5
Group Name: group5
Storage Type: Volatile
Row Status: Active

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------------------------------
Security odel: v3
Security Name: initial
Group Name: initial
Storage Type: Non-volatile
Row Status: Active
------------------------------
Security odel: v3
Security Name: template D5
Group Name: initial
Storage Type: Non-volatile
Row Status: Active
------------------------------
Security odel: v3
Security Name: templateSHA
Group Name: initial
Storage Type: Non-volatile
Row Status: Active
------------------------------
1.6.5 View
A view specifies limited access to IBs. A view can be associated with one or many groups.
In an SN P, parameters are arranged in a tree format. SN P uses an Object Identifier (OID) to identify
the exact parameter in the tree. An OID is a list of numbers separated by periods.
Follow the steps below to configure the SN P view.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp
view <ViewName> <OIDTree> [mask
<OIDMask>] {included | excluded} [{volatile |
nonvolatile}]
Configu
r
es the SN
P view.
ViewName- Alphanumeric value with a
maximum of 40 characters.
OIDTree – OID number, with a
maximum of 32 numbers.
OIDMask – OID number, with a
maximum of 32 numbers.
Use included to specify that the IB
sub-tree is included in the view.
Use excluded to specify that the IB
sub-tree is excluded from the view.

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Use
volatile
if the value need not be
stored in NVRA .
Use nonvolatile if the value must be
stored in NVRA and available after
restart.
Step 3
end
Exits the configuration mode.
Step 4
show snmp viewtree
Displays the SN P
view
information.
Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of the startup
configuration.
The
“
no snmp view <ViewName> <OIDTree>
”
command
deletes the specified SN P view.
The example below shows the commands used to configure the SN P view.
S IS(config)# snmp view view1 1.3.6.1 included
S IS(config)# show snmp viewtree
View Name: iso
Subtree OID: 1
Subtree ask: 1
View Type: Included
Storage Type: Non-volatile
Row Status: Active
------------------------------
View Name: view1
Subtree OID: 1.3.6.1
Subtree ask: 1.1.1.1
View Type: Included
Storage Type: Volatile
Row Status: Active
------------------------------
View Name: Restricted
Subtree OID: 1
Subtree ask: 1
View Type: Excluded
Storage Type: Non-volatile
Row Status: Active
------------------------------

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1.6.6 Group Access
Group access defines the access policy for a set of users belonging to a particular group. Group access is
used only for SN Pv3.
Follow the steps below to configure SN P group access.
Step Command Description
Step 1
configure terminal
Enters the configuration mode
Step 2
snmp access <GroupName> {v1 | v2c | v3 {auth |
noauth | priv}} [read <ReadView | none>] [write
<WriteView | none>] [notif <Notif View |
none>] [{volatile | nonvolatile}]
Configu
r
es the SN
P group access.
roupName - Alphanumeric value with
a maximum of 40 characters.
Security model – ention one of v1,
v2c or v3.
Use auth to enable authentication for
the user.
Use priv to enable encryption of
packets.
ReadView- View name that specifies
read access to particular IB sub-tree.
Alphanumeric value with a maximum of
40 characters.
WriteView View name that specifies
write access to particular IB sub-tree.
Alphanumeric value with a maximum of
40 characters.
NotifyView View name that specifies a
particular IB sub-tree used in
notification. Alphanumeric value with a
maximum of 40 characters.
Use volatile if the value need not be
stored in NVRA .
Use nonvolatile if the value must be
stored in NVRA and available after
restart.
Step 3
end
Exits the configuration mode.
Step 4
show snmp
group access
Displays the SN P
group access
information.

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Step 5
write startup
-
config
Optional step
–
saves this SN P
configuration to be part of startup
configuration.
Group, user and view
should be created before configuring group access.
The “ no snmp access <GroupName> {v1 | v2c | v3 {auth | noauth | priv}}”
command deletes the specified SN P group access.
The example below shows the commands used to configure the SN P group access.
S IS# configure terminal
S IS(config)# snmp access group5 v3 auth read view1 write view2 notif none nonvolatile
S IS(config)# end
S IS# show snmp group access
Group Name: iso
Read View: iso
Write View: iso
Notify View: iso
Storage Type: Volatile
Row Status: Active
------------------------------
Group Name: iso
Read View: iso
Write View: iso
Notify View: iso
Storage Type: Volatile
Row Status: Active
------------------------------
Group Name: group5
Read View: view1
Write View: view2
Notify View:
Storage Type: Non-volatile
Row Status: Active
------------------------------
Group Name: Initial
Read View: Restricted
Write View: Rrestricted
Notify View: Restricted
Storage Type: Non-volatile
Row Status: Active
------------------------------