ASKEY-DSLAM-VC-VLAN-MIB

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Organization: Askey, Inc.

Last Updated: 2003-11-24

Category: DSL and Broadband, VLAN and Bridging, Vendor: Askey

Description: Manages ATM virtual circuit to VLAN mapping for subscriber traffic on Askey DSLAMs.

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What Is ASKEY-DSLAM-VC-VLAN-MIB?

ASKEY-DSLAM-VC-VLAN-MIB is a vendor-private MIB from Askey defining objects for its DSLAM (Digital Subscriber Line Access Multiplexer) broadband access platforms. It exposes configuration data mapping ATM virtual circuits (VPI/VCI pairs) to VLAN identifiers, along with per-circuit service parameters such as priority, MAC limits, RFC 2684 bridging/routing mode, and IP traffic profiles used for subscriber provisioning. Rather than hardware health telemetry, this module is primarily about software/service configuration status - it lets an operator verify that each subscriber's ATM circuit is correctly bound to the intended VLAN and service profile, which is critical for confirming provisioning correctness and diagnosing misrouted subscriber traffic. It builds on standard ATM and 802.1Q VLAN concepts but is Askey's own enterprise extension rather than a direct dependency on a published IETF MIB. It is typically deployed in DSL access networks operated by telecom carriers to manage broadband subscriber aggregation at the DSLAM. Engineers can download the ASKEY-DSLAM-VC-VLAN-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ASKEY-DSLAM-VC-VLAN-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Askey DSLAM (DSL access multiplexer)
broadband access aggregation device

Monitoring Examples

An operator would poll askeyVcVlanTable/askeyVcVlanEntry to confirm that a given vcVlanEntryVpi/vcVlanEntryVci pair is mapped to the expected vcVlanEntryVlanId and 8021p priority for a subscriber line. If vcVlanEntryRfc2684Mode or vcVlanEntryRoutedModeNexthop is misconfigured, downstream traffic for that circuit may be dropped or misrouted, which shows up as subscriber connectivity complaints. Checking vcVlanEntryMacLimit also reveals whether a line is being throttled due to excessive MAC learning, a common indicator of a subscriber-side loop or device flooding the ATM circuit.

What Can Be Monitored

VPI/VCI to VLAN mapping
802.1p priority per circuit
MAC address limit per circuit
RFC 2684 bridging/routing mode
IP traffic profile assignment
service type per subscriber circuit

Imported Objects

From ASKEY-DSLAM-MIB

ipDslam

OBJECT-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

IpAddress
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus

OIDs

OID symbolic	OID numeric	Type	Access	Description
askeyDslamVcVlanMIB	1.3.6.1.4.1.3646.1300.2.11			The MIB module presents all managed objects for mapping between vc and vlan.
askeyVcVlanTable	1.3.6.1.4.1.3646.1300.2.11.1		not-accessible
askeyVcVlanEntry	1.3.6.1.4.1.3646.1300.2.11.1.1		not-accessible	An entry in the Vc-Vlan table. It defines traffic parameter values and the QoS Class of a virtual channel and other parameters that traffic on this virtual channel should be mapped to such as VLAN ID, 802.1p. It also specifies the RFC2684 mode and mac limits. To create a entry at Vc Vlan entry, the following procedures is used: Negotiated VC-VLAN establishment (1a) The management application creates a VC-VLAN entry in the askeyVcVlanTable by setting vcVlanEntryRowStatus to createAndWait(5). This may fail for the following reasons: - The selected VPI/VCI values are unavailable, - The selected VPI/VCI values are in use. Otherwise, the agent creates a row and reserves the VPI/VCI values on that port. (1b) The management application creates a VC-VLAN entry in the askeyVcVlanTable by setting any field to a valid value except vcVlanEntryRowStatus. (2) The manager activates the VC-VLAN by setting the vcVlanEntryRowStatus to active(1). If this set is successful, the agent has reserved the resources to satisfy the requested traffic parameter values and the QoS Class for that VC-VLAN. Traffic flow is on. (3) The manager de-actives the VC-VLAN by setting the vcVlanEntryRowStatus to notInService(3) and the agent may release all associated resources. VC-VLAN Retirement An entry is released by setting vcVlanEntryRowStatus to destroy(6), and the agent may release all associated resources.
INT vcVlanEntryVpi	1.3.6.1.4.1.3646.1300.2.11.1.1.1	INTEGER	read-only	The VPI value of the VCL. The maximum VPI value cannot exceed the value allowable by the atmInterfaceMaxVpiBits.
INT vcVlanEntryVci	1.3.6.1.4.1.3646.1300.2.11.1.1.2	INTEGER	read-only	The VCI value of the VCL. The maximum VCI value cannot exceed the value allowable by the atmInterfaceMaxVciBits.
INT vcVlanEntryVlanId	1.3.6.1.4.1.3646.1300.2.11.1.1.3	INTEGER	read-create	IEEE 802.1q VLAN tag number that traffic on this VCL should be mapped to in the upstream direction.
INT vcVlanEntry8021pPriority	1.3.6.1.4.1.3646.1300.2.11.1.1.4	INTEGER	read-create	IEEE 802.1p Priority that traffic on this VCL should be mapped to in the upstream direction.
INT vcVlanEntryMacLimit	1.3.6.1.4.1.3646.1300.2.11.1.1.5	INTEGER	read-create	The maximum number of MAC associated to the VCL link. The total number of MAC associated to VCL links of one port can not over 8. This attribute only applies to bridged mode VC, if the VC is routed mode, the mac limit will always be 1.
INT vcVlanEntryRfc2684Mode	1.3.6.1.4.1.3646.1300.2.11.1.1.6	INTEGER	read-create	The meanings of the values are: routed(1): RFC2684 routed mode bridged(2): RFC2684 bridged mode pppoE(3): only PPPoE frames. Not supported now.
STR vcVlanEntryRoutedModeNexthop	1.3.6.1.4.1.3646.1300.2.11.1.1.7	SnmpAdminString	read-create	This attribute only applies to routed mode VC. If the VC is bridged mode, ignore this. The name of the nexthop(ISP) needed in routed mode.
STR vcVlanEntryIPTrafficProfile	1.3.6.1.4.1.3646.1300.2.11.1.1.8	SnmpAdminString	read-create	This attribute indicates the IP traffic profile used to describe the VC VLAN entry's traffic characteristic.
INT vcVlanEntryServiceType	1.3.6.1.4.1.3646.1300.2.11.1.1.9	INTEGER	read-create	This attribute indicates the ethertype filter of the upstream direction. If the filter type is PPPoE, allow the PPPoE packet only. If the filter type is DHCP, allow the DHCP packet only. If the filter type is PPPoEandDHCP, allow the PPPoEandDHCP packet. If the filter type is Static_IP, allow the specific IP according to vcVlanEntryServiceStaticIpBase and vcVlanEntryServiceStaticIpNumber.
IP vcVlanEntryServiceStaticIpBase	1.3.6.1.4.1.3646.1300.2.11.1.1.10	IpAddress	read-create	vcVlanEntryServiceStaticIpBase and vcVlanEntryServiceStaticIpNumber limit.
INT vcVlanEntryServiceIpNumberLimit	1.3.6.1.4.1.3646.1300.2.11.1.1.11	INTEGER	read-create	This attribute limits the number of DHCP or static IP per PVC. It can not be bigger than MAC limit if service type is staticip; otherwise it can not be bigger than 8.
INT vcVlanEntryOperStatus	1.3.6.1.4.1.3646.1300.2.11.1.1.12	INTEGER	read-only	This attribute indicates the operational status of the VC VLAN entry.
ROW vcVlanEntryRowStatus	1.3.6.1.4.1.3646.1300.2.11.1.1.13	RowStatus	read-create	This object is used to create, delete or modify a row in this table. To create a new entry, this object is initially set to 'createAndWait'. 'createAndGo' is not supported
ipTrafficObects	1.3.6.1.4.1.3646.1300.2.11.2
INT ipTrafficProfileCount	1.3.6.1.4.1.3646.1300.2.11.2.1	INTEGER	read-only	This object respresents the total count of configured IP traffic profiles.
ipTrafficProfileTable	1.3.6.1.4.1.3646.1300.2.11.2.2		not-accessible	This table contains IP traffic profiles and each IP traffic profile can be defined to represent characteristics of an IP traffic. One entry in this table reflects an IP traffic profile defined by a manager which can be used to assign to any VC-VLAN entry of each the ADSL subscriber line. Maximum number of IP traffic profiles is 60.
ipTrafficProfileEntry	1.3.6.1.4.1.3646.1300.2.11.2.2.1		not-accessible	Each entry consists of a list of parameters that represents an IP traffic profile.
STR ipTrafficProfileName	1.3.6.1.4.1.3646.1300.2.11.2.2.1.1	SnmpAdminString	not-accessible	The profile name is used to be the index of each IP traffic profile. It must be unique and can contains '0'~'9', 'A'~'Z', 'a'~'z', '-','_','.','@' only.
INT ipTrafficProfileUsRateLimit	1.3.6.1.4.1.3646.1300.2.11.2.2.1.2	INTEGER	read-create	The level of rate limiting in up-stream direction of this IP traffic profile.
INT ipTrafficProfileMaxDsRate	1.3.6.1.4.1.3646.1300.2.11.2.2.1.3	INTEGER	read-create	The maximum transmit data rate in Kbps in the down-stream direction of this IP traffic profile. The specified data rate will be rounded to the largest multiple of 32.
INT ipTrafficProfileDsPriority	1.3.6.1.4.1.3646.1300.2.11.2.2.1.4	INTEGER	read-create	The transmit priority applied to the down-stream direction of this IP traffic profile. The value 0 indicateds the lowest priority, the value 3 indicateds the highest priority
ROW ipTrafficProfileRowStatus	1.3.6.1.4.1.3646.1300.2.11.2.2.1.5	RowStatus	read-create	The rowStatus of a mcast service profile. Set rowStatus to createAndGo to create an IP traffic profile and set to destory to delete an IP traffic profile. If the profile is used by any VC-VLAN entry, it is not allowed to be deleted.
INT ipTrafficProfileDsBcastFilter	1.3.6.1.4.1.3646.1300.2.11.2.2.1.6	INTEGER	read-create	This object indicates down stream broadcast filter setting. The setting includes the following values: Passing all broadcast packets is used to 'passAll(1)'. Dropping all broadcast packets is used to 'dropAll(2)'. 'specific(3)' will fileter packets and only pass the broadcast packets that is spcific VLAN ID.

RFC description

Askey DSLAM VC VLAN MIB provides management objects for VLAN and virtual circuit configuration on Askey DSLAM (DSL Access Multiplexer) devices.

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Download ASKEY-DSLAM-VC-VLAN-MIB

What Is ASKEY-DSLAM-VC-VLAN-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description