|
|
Table Of Contents
Configuring Operation, Administration, and Maintenance
Configuring OAM for the Entire Switch (Catalyst 8540 MSR)
Configuring OAM for the Entire Switch (Catalyst 8510 MSR and LightStream 1010)
Configuring the Interface-Level OAM
Checking the ATM Connection (Catalyst 8540 MSR)
Checking the ATM Connection (Catalyst 8510 MSR and LightStream 1010)
Displaying the OAM Configuration
Configuring Operation, Administration, and Maintenance
This chapter describes the Operation, Administration, and Maintenance (OAM) implementation on the ATM switch router.
Note
This chapter provides advanced configuration instructions for the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. For complete descriptions of the commands mentioned in this chapter, refer to the ATM Switch Router Command Reference publication.
This chapter includes the following sections:
•
•
•
OAM Overview
OAM performs fault management and performance management functions at the ATM management (M)-plane layer.
Note
The ATM switch router has full support for the following ATM OAM cell flows:
•
•
Both F4 and F5 flows can be configured as either end-to-end or segment-loopback and used with alarm indication signal (AIS) and remote defect indication (RDI) functions.
Note
In addition to the standard OAM functions, the ATM switch router can also send OAM pings. OAM cells containing the ATM node addresses or IP addresses of intermediate switches allow network administrators to determine the integrity of a chosen connection at any intermediate point along the connection, allowing for network connection debugging and troubleshooting.
OAM software implements ATM Layer F4 and F5 OAM fault management functions. OAM performs standard loopback (end-to-end or segment) and fault detection and notification (AIS and RDI) for each connection. It also maintains a group of timers for the OAM functions. When there is an OAM state change such as loopback failure, OAM software notifies the connection management software. The network operator can enable or disable OAM operation for the following switch components:
•
•
•
If OAM operation is disabled, outgoing OAM cells (AIS, RDI and loopbacks) are not generated and AIS and RDI cells that arrive at connection endpoints are discarded.
To support various OAM operations, the ATM switch router hardware provides OAM cell routing functions on a per-connection basis for each direction and for different OAM cell spans (segment and end-to-end). The hardware OAM cell routing determines the destination of an OAM cell received from the link or the network and then determines whether OAM cells are processed by the switch software.
The hardware can perform the following functions on OAM cells:
•
•
•
An ATM connection consists of a group of network points that form the edges of each ATM switch or end system.
Each point can be one of the following:
•
•
•
The following sections describe the OAM tasks:
•
•
Configuring OAM Functions
This section describes OAM commands in EXEC, global, and interface configuration mode.
Configuring OAM for the Entire Switch (Catalyst 8540 MSR)
To enable OAM operations for the Catalyst 8540 MSR, use the global configuration command, as shown in the following table:
atm oam [ais] [end-loopback]
[max-limit number] [rdi] [seg-loopback]Enables or disables OAM operations for the entire switch.
Note
Examples
The following example shows how to enable AIS and segment loopback for the entire switch:
Switch(config)# atm oam ais seg-loopback% OAM: Switch level seg loopback is enabled% OAM: Switch level ais is enabledThe following example shows how to configure the ATM OAM connection maximum to 1600:
Switch(config)#atm oam max-limit 1600Configuring OAM for the Entire Switch (Catalyst 8510 MSR and LightStream 1010)
To enable OAM operations for the entire Catalyst 8510 MSR and LightStream 1010 ATM switch router, use the global configuration command, as shown in the following table:
atm oam [ais] [end-loopback]
[intercept end-to-end] [max-limit number] [rdi] [seg-loopback]Enables or disables OAM operations for the entire switch.
Note
Examples
The following example shows how to enable AIS and segment loopback for the entire switch:
Switch(config)#atm oam ais seg-loopback%OAM: Switch level seg loopback is enabled% OAM: Switch level ais is enabledThe following example shows how to configure the ATM OAM connection maximum to 1600:
Switch(config)#atm oam max-limit 1600Configuring the Interface-Level OAM
To enable OAM operations on an interface, perform the following steps, beginning in global configuration mode:
Examples
The following example shows how to enable OAM AIS and end-to-end loopback on interface 3/0/0:
Switch(config)# interface atm 3/0/0Switch(config-if)# atm oam ais end-loopback% OAM: Interface level end to end loopback is enabled% OAM: Interface level ais is enabledThe following example shows how to enable OAM AIS and end-to-end loopback on interface 3/0/0, VPI = 50, VCI = 100:
Switch(config)# interface atm 3/0/0Switch(config-if)# atm oam 50 100 ais end-loopback% OAM: Connection level end to end loopback is enabled% OAM: Connection level ais is enabled
Note
In interface configuration command mode, you can enable or disable OAM operations on existing connections on different interfaces by specifying interface atm card/subcard/port. The following example disables OAM AIS flows at interface 1/0/0 while in interface 3/0/0:
Switch(config)# interface atm 3/0/0Switch(config-if)# no atm oam interface atm 1/0/0 ais% OAM: Interface level ais is disabledChecking the ATM Connection (Catalyst 8540 MSR)
To check ATM connection reachability and network connectivity on the Catalyst 8540 MSR, use the ping EXEC command, as shown in the following table:
ping atm interface atm card/subcard/port vpi [vci] {end-loopback [destination] | seg-loopback [destination]}
Checks the connection.
You can ping a neighbor switch by selecting the segment loopback option. In privileged EXEC mode, you can select various other parameters such as repeat count and timeout values.
Examples
The following example shows the ping command used in normal mode to check a virtual channel connection (VCC) with a segment loopback flow:
Switch# ping atm interface atm 3/0/0 50 100 seg-loopbackType escape sequence to abort.Sending Seg-Loopback 5, 53-byte OAM Echoes to a neighbor, timeout is 5 seconds:.....Success rate is 0 percent (0/5)The following example shows the ping command used in extended mode to check a VCC with end-to-end loopback flow:
Switch# pingProtocol [ip]: atmInterface [card/sub-card/port]: 3/0/0VPI [0]: 0VCI [0]: 16Send OAM-Segment-Loopback ? [no]:Target IP address:Target NSAP Prefix:Repeat count [5]:Timeout in seconds [5]:Type escape sequence to abort.Sending end-Loopback 5, 53-byte OAM Echoes to a connection end point, timeout is5 seconds:.....Success rate is 0 percent (0/5)Checking the ATM Connection (Catalyst 8510 MSR and LightStream 1010)
To check ATM connection reachability and network connectivity on the Catalyst 8510 MSR and LightStream 1010 ATM switch router, use the ping EXEC command, as shown in the following table:
ping atm interface atm card/subcard/port vpi [vci] {[atm-prefix prefix] | end-loopback [destination] | ip-address ip-address | seg-loopback [destination]}
Checks the connection.
You can use either an ATM address prefix or an IP address as a ping destination. You can ping a neighbor switch by selecting the segment loopback option. In privileged EXEC mode, you can select various other parameters such as repeat count and timeout values.
Examples
The following example shows the ping command used in normal mode to check a VCC with a segment loopback flow:
Switch# ping atm interface atm 3/0/0 50 100 seg-loopbackType escape sequence to abort.Sending Seg-Loopback 5, 53-byte OAM Echoes to a neighbor, timeout is 5 seconds:.....Success rate is 0 percent (0/5)The following example shows the ping command used in extended mode to check a VCC with end-to-end loopback flow:
Switch# pingProtocol [ip]: atmInterface [card/sub-card/port]: 3/0/0VPI [0]: 0VCI [0]: 16Send OAM-Segment-Loopback ? [no]:Target IP address:Target NSAP Prefix:Repeat count [5]:Timeout in seconds [5]:Type escape sequence to abort.Sending end-Loopback 5, 53-byte OAM Echoes to a connection end point, timeout is5 seconds:.....Success rate is 0 percent (0/5)
Note
Displaying the OAM Configuration
To display the OAM configuration, use the following EXEC command:
Example
The OAM configuration is displayed in the following example:
Switch#more system:running-configBuilding configuration...Current configuration:!version XX.Xno service padservice udp-small-serversservice tcp-small-servers!hostname Switch!boot system flash slot0:rhino/ls1010-wi-m_1.083.bin.Z!ip rcmd remote-username dougatm oam max-limit 1600atm over-subscription-factor 16atm service-category-limit cbr 3000atm qos uni3-default cbr max-cell-loss-ratio 12atm lecs-address 47.0091.0000.0000.0000.0000.0000.0000.0000.0000.00atm address 47.0091.8100.0000.0060.3e5a.db01.0060.3e5a.db01.00!interface ATM0/0/0no keepalivemap-group atm-1no atm auto-configurationno atm address-registrationno atm ilmi-enableno atm ilmi-lecs-impliedatm iisp side useratm pvp 99atm oam 0 5 seg-loopback end-loopback rdiatm oam 0 16 seg-loopback end-loopback rdiatm oam 0 18 seg-loopback end-loopback rdi!interface ATM0/0/0.99 point-to-pointno atm auto-configurationno atm address-registrationno atm ilmi-enableno atm ilmi-lecs-impliedatm maxvp-number 0atm oam 99 5 end-loopback rdiatm oam 99 16 end-loopback rdiatm oam 99 18 end-loopback rdi!--More--<information deleted>
Posted: Mon Oct 11 09:10:58 PDT 2004
All contents are Copyright © 1992--2004 Cisco Systems, Inc. All rights reserved.
Important Notices and Privacy Statement.
