SNMP

The Simple Network Management Protocol (SNMP) communicates management information between the network management stations and an SNMP agent on the Avici router.

Use the procedures described in this chapter to configure the SNMP agent on the Avici router to send reports (traps) to up to five network management stations when certain events or errors occur.

This chapter describes the procedures to:

• Enable SNMP on the Avici router
  
  
• Enable/disable trap reporting
  
  
• Enable display of SNMP packets and/or headers
  
  
• Display SNMP statistics, enabled traps, hosts, trap-source and counters
  
  

Related Information

Administrators should be familiar with SONET and IP operation and theory before configuring the Avici router to run SNMP. The following are recommended as further reading:

• RFC 1157 - A Simple Network Management Protocol (SNMP), J. Case and M. Fedor, May 1990
  
  
• SNMP, SNMPv2, SNMPv3, and RMON 1 and 2, William Stallings, 1999, Addison-Wesley. ISBN 0-201-48534-6
  
  

RFC Information

This implementation of SNMP Version 3 complies with the following RFCs:

• RFC 2573 SNMP Applications
  
  
• RFC 2574, User-Based Security Model (USM) for SNMP
  
  
• RFC 2575, View-Based Access Control Model (VACM) for SNMP
  
  
• RFC 2576, Coexistence between Version 1, Version 2, and Version 3 of Internet-standard Network Management Framework.
  
  
• RFC 2558, Definitions of Managed Objects for the SONET/SDH Interface Type
  
  

Configuring SNMP

There are two distinct sets of tasks to configure SMNP on the Avici router:

• Globally configure SNMP hosts, SNMP administrative information, and enable SNMP
  
  
• On each SONET interface, configure the SNMP traps to be sent to the SNMP host.
  
  

Configuring Global SNMP

Use the procedures described in this section to configure the global attributes of SNMP on the Avici router.

PROCEDURE: Use the following steps to configure SNMP hosts, administrative information, and enable SNMP on the Avici router:

Step 1 Use the snmp-server host command to:

• Register one or more remote hosts to receive traps from the Avici router.
  
  
• Use the ipaddress | hostname argument to specify the host by ip address or hostname.
  
  
• Use the snmpv1 | snmpv2 | snmpv3 argument to define the SNMP version of trap to send whenever the agent sends a trap to the given host. The default option is to send Version 1.
  
  
• If selecting snmpv1 or snmpv2, use the community-name argument to define a trap community string used whenever the agent sends a trap to the given host. If you do not configure a community string the default string, (SNMP_trap) is used.
  
  
• If selecting snmpv3 version, use the user-name argument to define an SNMP user whenever the agent sends a trap to the given host. There is no default SNMP user. To create a user, use the snmp-server user command.
  
  
• Use the trap-category argument to select up to fifteen (15) categories of traps allowed on this SNMP host. To allow all categories of traps, do not specify any category.
  
  

  Valid values for trap-category are:
  
  

Table 10-1. SNMP Trap Categories

Trap-category	Description
bay-controller	Allows bay controller traps
bgp	Allows BGP state change traps
comp-link	Allows Composite Link traps
environment	Allows environmental monitoring traps, including: fans temperature voltage
gbe	Allow gigabit ethernet traps
ldp	Allow LDP traps
link-up-down	Allows Link Up/Down traps.
module	Allows module traps.
msdp	Allows MSDP traps.
ospf	Allows OSPF traps.
pim	Allows PIM (Multicast) traps.
rmon	Allows RMON traps.
snmp	Allows SNMP traps.
sonet	Allows SONET traps.
te	Allows Traffic Engineering traps
qos	Allows Quality of Service traps

Step 2 Repeat Step 1 for up to 5 SNMP hosts.

Step 3 Use the snmp-server community command to:

• Enable SNMP
  
  
• Set the community string.
  
  
• Set the read and write access privileges for the SNMP community.
  
  
• Associate a standard access-list with this community.
  
  
• Set restrictions to a named MIB view for the community.
  
  

  Step 4 Use the snmp-server location command to identify the location of the Avici router (sets the text for MIB object syslocation 1.3.6.1.2.1.1.6). The field may be up to 255 alphanumeric characters.

  Step 5 Use the snmp-server contact command to identify the contact person and the directions for contacting that person (sets the text for MIB object syslcontact 1.3.6.1.2.1.1.4). The field may be up to 255 alphanumeric characters.

  Step 6 Use the snmp-server trap-source command to configure an interface as the source address for SNMP traps. If no trap source is explicitly configured, the trap source address defaults to the BGP router id. If the BGP router id is not configured, the source address is the IP address of ethernet 0.

  Step 7 Use the snmp-server enable traps command to enable or disable reporting of specific traps to a trap host.

  NOTE If a host is not explicitly configured to get specific trap categories using the snmp-server host command, that host will receive the traps specified by the snmp-server enable traps command.

  By default, all traps except the following are enabled:

Table 10-2. Traps Disabled by Default 

Traps Disabled by Default	Description
sonet-line-far-end	Generates a SNMP trap when the number of cv-rising, es-rising, ses-rising, or uas-rising errors encountered by a SONET/SDH path entity in a particular 15 minute interval rise above thresholds defined by the sonet threshold line-far-end command.
sonet-path-far-end	Generates a SNMP trap when the number of cv-rising, es-rising, ses-rising, or uas-rising errors encountered by a SONET/SDH path entity in a particular 15 minute interval rise above thresholds defined by the sonet threshold path-far-end command.
sonet line cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
sonet line es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
sonet line ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
sonet line uas-rising	Generates a SNMP trap when the number of Unavailable Seconds (UAS) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
sonet path cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
sonet path es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
sonet path ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
sonet path uas-rising	Generates a SNMP trap when the number of Unavailable Seconds (UAS) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
sonet section cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
sonet section es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
sonet section sefs-rising	Generates a SNMP trap when the number of Severely Errored Framing Seconds (SEFS) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
sonet section ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.

Step 8 Use the show snmp command to display the SNMP configuration.

In the following example:

• The snmp-server host command defines a server host, configures the SNMP agent to use the SNMPv1 trap format, and to send bay controller, environment and module traps.
  
  
• The snmp-server community command enables SNMP on the Avici router, defines the community string as AVIsys1, and sets access to for the SNMP community to read-only. A standard access-list list1 is associated with this host.
  
  
• The snmp-server location command defines the sysLocation MIB object (sets the text for MIB object syslocation 1.3.6.1.2.1.1.6). The field may be up to 255 alphanumeric characters. This text will appear in the Location: field in the output of the show snmp command.
  
  
• The snmp-server contact command defines the MIB object sysContact (sets the text for MIB object syslocation 1.3.6.1.2.1.1.4). The field may be up to 255 alphanumeric Pcharacters. This text will appear in the Contact: field in the output of the show snmp command.
  
  
• The snmp-server trap-source loopback 0 command configures interface loopback 0 as the source address for SNMP traps.
  
  
• The snmp-server enable-traps command enables 1 trap.
  
  
• The no snmp-server enable-traps command disables 1 trap.
  
  

  The show snmp command displays SNMP configuration:

router#show snmp Name:router Contact:snmp@avici.comshow sn Location:Sunnyvale Lab Bldg. 14 Row 7 EngineId : 0011223344556677P8899 Engine Boots : 0 Name: router Contact: Avici Systems, Inc. 101 Billerica AveNorth Billerica, MA 01862

Phone: 1-TSR-BY-AVICI (1-877-292-8424) Email: support@avici.com Web: www.avici.comLocation: Massachusetts 28 SNMP Packets Input           0 SNMP Errors 0 Bad SNMP Version Errors 0 Bad Community Name Errors 0 Bad Community Uses Errors 0 ASN Parse Errors 0 Too Big Errors 0 No Such Name Errors 0 Bad Values Errors 0 Read Only Errors           0 General Errors           0 Unknown Security Models           0 Unavailable Contexts 0 Total Request Variables 0 Get Requests 0 Get-Next Requests 0 Set Requests 0 Total Set Variables

42 SNMP Packets Output           0 Too Big Errors 0 No Such Name Errors 0 Bad Values Errors          0 General Errors          Unavailable Contexts 0 Get Response   42 Traps Sent 0 SNMP Errors           0 Invalid Message Report PDUs           0 Unknown PDU Handler Report PDUs           0 Unknown Context Report PDUs           0 Unsupported Security Level Report PDUs           0 Not in time Window Report PDUs           0 Unknown Username Report PDUs           0 Unknown Engine ID Report PDUs           0 Wrong Digest Report PDUs           0 Decryption Error Report PDUs

Trap Configuration SNMP Authentication Enabled Fan Enabled Temperature Enabled Voltage Enabled Link Up/Down Enabled Sonet Enabled BGP Enabled OSPF Enabled Bay Controller Enabled Module Enabled Rmon Enabled PIM Enabled        SNMP     LDP Enabled TE Enabled QoS Enabled

Host   : 192.32.228.11    Type          : trap    User          : SNMP_trap    Security Model: V2    Security Level: noauth    Trap Category  : bgp environment link-up-down ospf rmon snmp    sonet                     bay-controller module pim msdp ldp te comp-link qos gbe

Host   : 10.5.1.110    Type          : trap    User          : SNMP_trap    Security Model: V1    Security Level: noauth    Trap Category  : bgp environment link-up-down ospf rmon snmp    sonet                     bay-controller module pim msdp ldp te comp-link qos gbe SNMP View       View Name : internetview    Subtree OID : internet    View Type : included    View Name : v1default    Subtree OID : iso    View Type : included SNMP Group       Group Name : Boston22    Security Model : V3    Security Level : noauth    Read View : v1default    Write View : <none>    Notify View : notifyname     Access List : level2users SNMP User        User Name : engineerbill     Auth Protocol : md5     Priv Protocol : des56     Access List : <none>

Configuring SNMP on Interfaces

Use the procedures described in this section to:

• Configure individual POS interfaces to enable or disable SNMP traps.
  
  
• Configure event thresholds to trigger SNMP traps.
  
  

SNMP Default Settings

IPriori includes a variety of default settings for SNMP. You can accept many of these defaults and therefore skip some steps of configuring SNMP on a POS interface. The defaults are as follows:

Table 10-3. SNMP Default Settings 

Command	Trap(s) Enabled by Default	Description of Default Setting
snmp trap link-status	Link-up/link-down.	Generates a SNMP trap when a link state changes from up to down or down to up.
snmp trap sonet line	Failure traps reported: AIS-failure RFI failure	Failure traps and failure clear traps are reported. All other traps disabled.
snmp trap sonet link-status	SONET link up/link down traps.	Generates a SONET link up/link down trap after the setting or clearing of SONET interface defect conditions.
snmp trap sonet line-far-end	None.
snmp trap sonet path	Failure traps reported: AIS-failure LOP-failure PLM failure RFI-failure UNEQ-failure	Failure traps and failure clear traps are reported. All other traps disabled.
snmp trap sonet path-far-end	None.
snmp trap sonet section	Failure traps reported: LOF-failure LOS-failure	Failure traps and failure clear traps are reported. All other traps disabled.

Modifying SNMP Settings

Use the procedures described in this section to modify the SNMP default settings.

Modifying Link-Status

By default, SNMP sends a trap every time an interface changes state from link-up to link-down or vice versa.

Use the no snmp trap link-status command to disable the interface from sending the link-up/link-down traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#no snmp trap link-status router(config-if)#end

Modifying SONET Link Up/Link Down Traps

By default, SNMP sends a trap every time a SONET interface experiences a defect and a second trap when the defect clears. Defects include:

• LOS
  
  
• LOF
  
  
• AIS
  
  
• RFI
  
  
• SONET path "admin down"
  
  

Use the no snmp trap sonet link-status command to disable SNMP sending SONET link up/link down SNMP traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/15/1 router(config-if)#no snmp trap sonet link-status router(config-if)#end router#

Modifying SONET Line Traps

IPriori supports the following SONET line traps:

Table 10-4. SONET Line Traps Supported

Line Traps	Descriptions
ais-failure	Generates a SNMP trap when an Alarm Indication Signal (AIS) is received.
ais-failure-cleared	Generates a SNMP trap when an alarm indication signal is cleared.
cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
rfi-failure	Generates a SNMP trap when a Remote Failure Indication (RFI) is received
rfi-failure-cleared	Generates a SNMP trap when a remote failure indication is cleared.
ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line command.
uas-rising	Generates a trap when UAS is rising about a defined threshold.

By default, the failure traps and failure clear traps are enabled and all other SONET line traps are disabled.

Use the snmp trap sonet line command to enable additional traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#snmp trap sonet line ses-rising router(config-if)#end

Enabling SONET Line-Far-End Traps

IPriori supports the following SONET Line-Far-End traps:

Table 10-5. SONET Line-Far-End Traps Supported

Traps	Descriptions
cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH line-far-end entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line-far-end command.
es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH line-far-end entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line-far-end command.
ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH line-far-end entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line-far-end command.
uas-rising	Generates a SNMP trap when the number of UnAvailable Seconds (UAS) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold line-far-end command.

By default, these traps are not enabled.

Use the snmp trap sonet line-far-end command to enable one or more of these traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#snmp trap sonet line-far-end es-rising router(config-if)#snmp trap sonet line-far-end ses-rising router(config-if)#snmp trap sonet line-far-end uas-rising router(config-if)#end router#

Modifying SONET Path Traps

IPriori supports the following SONET path traps:

Table 10-6. SONET Path Traps Supported 

Path	Description
ais-failure	Generates a SNMP trap when an Alarm Indication Signal (AIS) is received.
ais-failure-cleared	Generates a SNMP trap when an alarm indication signal event is cleared.
cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
lop-failure	Generates a SNMP trap when a Loss Of Pointer defect (LOP) is received
lop-failure-cleared	Generates a SNMP trap when an loss of pointer event is cleared.
plm-failure	Generates a SNMP trap when a Path Label Mismatch (PLM) defect is received
plm-failure-cleared	Generates a SNMP trap when a path label mismatch defect is cleared.
rfi-failure	Generates a SNMP trap when a Remote Failure Indication (RFI) is received
rfi-failure-cleared	Generates a SNMP trap when a remote failure indication is cleared.
ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
uas rising	Generates a SNMP trap when the number of UnAvailable Seconds (UAS) encountered by a SONET/SDH path entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path command.
uneq-failure	Generates a SNMP trap when an Unequipped (UNEQ) defect is received
uneq-failure-cleared	Generates a SNMP trap when a unequipped event is cleared.

By default, the failure traps and failure clear traps are enabled, and all other SONET path traps are disabled.

Use the snmp trap sonet path command to enable additional trap(s):

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#snmp trap sonet path ses-rising router(config-if)#end router#

Enabling SONET Path-Far-End Traps

IPriori supports the following SONET Path-Far-End traps:

Table 10-7. SONET Path-Far-End Traps Supported 

Path	Description
cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path-far-end command.
es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path-far-end command.
ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path-far-end command.
uas-rising	Generates a SNMP trap when the number of UnAvailable Seconds (UAS) encountered by a SONET/SDH line entity in a particular 15 minute interval rises above a threshold defined by the sonet threshold path-far-end command.

By default, these traps are not enabled.

Use the snmp trap sonet path-far-end command to enable one or more of these traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#snmp trap sonet path-far-end es-rising router(config-if)#snmp trap sonet path-far-end ses-rising router(config-if)#snmp trap sonet path-far-end uas-rising router(config-if)#end router#

Modifying SNMP Section Traps

IPriori supports the following SONET section traps:

Table 10-8. SONET Section Traps Supported 

Path	Description
cv-rising	Generates a SNMP trap when the number of Coding Violations (CV) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
es-rising	Generates a SNMP trap when the number of Errored Seconds (ES) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
lof-failure	Generates a SNMP trap when a Loss Of Frame defect (LOF) is received
lof-failure-cleared	Generates a SNMP trap when an loss of frame event is cleared.
los-failure	Generates a SNMP trap when a Loss Of Signal defect (LOS) is received
los-failure-cleared	Generates a SNMP trap when an loss of signal event is cleared.
sefs-rising	Generates a SNMP trap when the number of Severely Errored Framing Seconds (SEFS) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.
ses-rising	Generates a SNMP trap when the number of Severely Errored Seconds (SES) encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold defined by the sonet threshold section command.

By default, only the failure traps and failure clear traps are enabled and all other SONET section traps are disabled.

Use the snmp trap sonet section command to enable additional SONET section traps:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#snmp trap sonet section sefs-rising router(config-if)#end router#

Modifying Event Thresholds

SONET thresholds control how many times an event occurs on a SONET connection within a 15 minute interval before an SNMP trap is generated.

By default, all thresholds are set at 1.

NOTE These commands define the thresholds for various events that occur on a SONET section. You must use the associated snmp trap sonet command to send traps when these thresholds are exceeded.

Use the procedures described in this section to change the thresholds for individual POS interfaces.

Modifying SONET Line Thresholds

SONET line thresholds are threshold values for events occurring in the line layer of a SONET connection.

SONET line thresholds are configured using the sonet threshold line command.

SONET line-far-end thresholds are threshold values for events occurring in the line layer at the remote end of a SONET connection.

SONET line-far-end thresholds are configured using the sonet threshold line-far-end command.

In the following example, the sonet threshold line ses command configures POS interface 1/1/1 to send an SNMP trap when the number of SES encountered by a SONET/SDH line in a particular 15 minute interval rises above a threshold of 5:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#sonet threshold line ses 5 router(config-if)#end router#

In the following example, the sonet threshold line-far-end es command configures POS interface 1/1/1 to send an SNMP trap when the number of ES encountered by a SONET/SDH line in a particular 15 minute interval rises above a threshold of 10:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#sonet threshold line-far-end es 10 router(config-if)#end router#

Modifying SONET Path Thresholds

SONET path thresholds are threshold values for events occurring in the path layer at the local end of a SONET connection.

SONET path thresholds are configured using the sonet threshold path command.

SONET path-far-end thresholds are threshold values for events occurring in the path layer at the remote end of a SONET connection.

SONET path-far-end thresholds are configured using the sonet threshold path-far-end command.

In the following example, the sonet threshold path ses command configures POS interface 1/1/1 to send an SNMP trap when the number of ES encountered by the local end of the SONET/SDH path layer in a particular 15 minute interval rises above a threshold of 3:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#sonet threshold path ses 3 router(config-if)#end router#

In the following example, the sonet threshold path-far-end ses command configures POS interface 1/1/1 to send an SNMP trap when the number of severely error seconds (SES) encountered by the remote end of a SONET/SDH path in a particular 15 minute interval rises above a threshold of 4:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#sonet threshold path-far-end ses 4 router(config-if)#end router#

Modifying SONET Section Thresholds

SONET section thresholds are threshold values for events occurring in the local end of the section layer of a SONET connection.

SONET section thresholds are configured using the sonet threshold section command.

In the following example, the sonet threshold section command configures POS interface 1/1/1 to send an SNMP trap when the number of SEFS encountered by a SONET/SDH section in a particular 15 minute interval rises above a threshold of 5:

router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. router(config)#interface pos 1/1/1 router(config-if)#sonet threshold section sefs 5 router(config-if)#end

Enabling SNMP Debugging

You can use the SNMP debugging commands to display SNMP packets and traps, or the type of variable bindings in SNMP packets.

SNMP debugging is supported for one session per Avici router. The session can be either a console session or a telnet session. If one SNMP debug session is already underway, using this command results in the following error message:

Error: SNMP Debug has already started

Debugging SNMP Headers

Use the debug snmp headers command to configure SNMP to display more information about SNMP headers. Use the debug snmp headers log to direct the debug output to the log file.

In the following example, the debug snmp headers command enables SNMP debugging:

router#debug snmp headers SNMP packet header debugging is on

Sample output from a get next request with debug snmp headers enabled, appears as follows:

SNMP: Packet received via UDP from 10.1.2.183 SNMP: Get next, reqid 3, errstat 0, erridx 0 SNMP: Response, reqid 3, errstat 0, erridx

SNMP: Packet received via UDP from 10.1.2.183 SNMP: Get bulk request, reqid 4, errstat 0, erridx 1 SNMP: Response, reqid 4, errstat 0, erridx 0

Debugging SNMP Packets

Use the debug snmp dump-packets command to display the type of variable bindings in SNMP packets.

In the following example, the debug snmp dump-packets command enables SNMP packet debugging:

router#debug snmp dump-packets SNMP packet header debugging is on

Sample output from a get next request with debug snmp dump-packets enabled, appears as follows:

DEBUG:SNMP:dump-packets: Dumping received packets 30 2a 02 01 00 04 09 53 4e 4d 50 5f 74 72 61 70            * 0 *.....SNMP_trap* a1 1a 02 02 00 c3 02 01 00 02 01 00 30 0e 30 0c *.......0.0.* 06 08 2b 06 01 02 01 04 02 00 05 00             *..+....0.*

Copyright © 2005 Avici Systems Inc.
Avici® and TSR® is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are trademarks of Avici Systems Inc.

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