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This feature module describes an enhancement to the RADIUS VC Logging feature. It includes information on the benefits of the enhancement, supported platforms, related documents, and command reference.
This document includes the following sections:
RADIUS Virtual Circuit (VC) Logging allows the Cisco 6400 universal access concentrator (UAC) to accurately record the virtual path interface (VPI) and virtual circuit interface (VCI) of an incoming subscriber session. With RADIUS VC Logging enabled, the RADIUS network access server (NAS) port field is extended and modified to carry VPI/VCI information. This information is logged in the RADIUS accounting record created at session startup.
The feature enhancement provides a new command to display the VPI/VCI information that can be used by the RADIUS VC Logging feature.
RADIUS VC Logging Administration
The enhancement to the RADIUS VC Logging feature enables you to display VPI/VCI information of incoming sessions. This information can be used to track single-subscriber issues on the Cisco 6400 UAC.
The RADIUS VC Logging Enhancement is supported on the Cisco 6400 UAC.
Standards
None
MIBs
None
RFCs
No new or modified RFCs are supported by this feature enhancement.
Cisco IOS Release 12.0(5) DB or higher on the node switch processor (NSP).
None
| Command | Purpose |
|---|---|
Router> show atm ingress [all | local-vc vpi/vci] [detailed] | Displays ingress VC information of local VCs. |
None
This section documents the new command that comprises the RADIUS VC Logging Enhancement.
In Cisco IOS Release 12.0(1)T or later, you can search and filter the output for show and more commands. This functionality is useful when you need to sort through large amounts of output, or if you want to exclude output that you do not need to see.
To use this functionality, enter a show or more command followed by the "pipe" character (|), one of the keywords begin, include, or exclude, and an expression that you want to search or filter on:
command | {begin | include | exclude} regular-expressionFollowing is an example of the show atm vc command in which you want the command output to begin with the first line where the expression "PeakRate" appears:
show atm vc | begin PeakRateFor more information on the search and filter functionality, refer to the Cisco IOS Release 12.0(1)T CLI String Search feature module.
To display the unique ingress VC information of local VCs, use the show atm ingress EXEC command.
show atm ingress [all | local-vc vpi/vci] [detailed]
Syntax Description
all List the ingress VC info of all the local VCs. local-vc List the ingress VC info of a specific local VC. vpi Virtual path interface. vci Virtual circuit interface. detailed Print out detailed information for debugging.
Defaults
No default behavior or values.
Command Modes
EXEC
Command History
12.0(7) DC This command was introduced on the node route processor (NRP) of the Cisco 6400 UAC.
Release
Modification
Usage Guidelines
The information displayed by this command is used to construct NAS Port ID and NAS IP attributes in RADIUS authentication requests and accounting records when the global configuration command radius attribute nas-port format d is entered.
Examples
The following examples display the ingress local VC info:
Router#show atm ingress all
Local VCD Ingress Ingress
Interface Name VPI VCI Interface VPI/VCI IPaddr
0/0/0.101 1 2 101 5/0/1 12/1001 10.20.30.40
0/0/0.102 2 2 102 5/0/1 12/1002 10.20.30.40
0/0/0.103 3 2 103 5/0/1 12/1003 10.20.30.40
Router#show atm ingress detailed
Local VCD Ingress Ingress
Interface Name VPI VCI Interface VPI/VCI IPaddr
0/0/0.101 1 2 101 5/0/1 12/1001 10.20.30.40
(0x611B5374/0x611B69EC/2/0xC20)
0/0/0.102 2 2 102 5/0/1 12/1002 10.20.30.40
(0x611B7460/0x6120AA04/2/0xC24)
0/0/0.103 3 2 103 5/0/1 12/1003 10.20.30.40
(0x6120BFD0/0x6120C584/2/0xC20)
Router#show atm ingress local-vc 2/101
Local:Interface:ATM0/0/0.101:VCD:1, VPI/VCI:2/101
Ingress:Interface:ATM5/0/1 VPI/VCI:12/1001 IP:10.20.30.40
Router#show atm ingress local-vc 2/101 detailed
Local:Interface:ATM0/0/0.101:VCD:1, VPI/VCI:2/101
Ingress:Interface:ATM5/0/1 VPI/VCI:12/1001 IP:10.20.30.40
:0x611B5374/0x611B69EC Code:2 Flags:0xC20
| Field | Description |
|---|---|
Local Interface | ATM interface or ATM subinterface (slot/subslot/port) viewed by the NRP |
VCD or VCD Name | Virtual circuit descriptor |
VPI | Virtual path interface |
VCI | Virtual circuit interface |
Ingress Interface | ATM interface (slot/subslot/port) viewed by the NSP |
IP or IPaddr | IP address of the network management Ethernet port (NME) on the NSP |
(hexadecimal output) | Diagnostic information |
Related Commands
radius-server attribute nas-port format Selects the NAS port format used for RADIUS accounting features.
Command
Description
PVC---permanent virtual circuit. Virtual circuit that is permanently established. PVCs save bandwidth associated with circuit establishment and tear down in situations where certain virtual circuits must exist all the time.
RADIUS---Remote Access Dial-In User Service. Database for authenticating modem and ISDN connections and for tracking connection time.
VC---virtual circuit. Logical circuit created to ensure reliable communication between two network devices. A virtual circuit is defined by a VPI/VCI pair, and can be either permanent (PVC) or switched (SVC).
VCI---virtual channel identifier. Sixteen-bit field in the header of an ATM cell. The VCI, together with the VPI, is used to identify the next destination of a cell as it passes through a series of ATM switches on its way to its destination.
VPI---virtual path identifier. Eight-bit field in the header of an ATM cell. The VPI, together with the VCI, is used to identify the next destination of a cell as it passes through a series of ATM switches on its way to its destination.
Posted: Sun Mar 26 11:17:24 PST 2000
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