Cisco Cisco IOS Software Release 12.0(21)S
ATM OAM Ping
Prerequisites for ATM OAM Ping
2
Cisco IOS Release: Multiple releases (see the Feature History table)
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Prerequisites for ATM OAM Ping
A PVC corresponding to the virtual path identifier (VPI) and virtual channel identifier (VCI) values
entered with the ping command should already exist. (For Cisco 827 series routers, the virtual circuit
need not exist.)
entered with the ping command should already exist. (For Cisco 827 series routers, the virtual circuit
need not exist.)
For information about how to configure ATM PVCs, see the section “
” in the chapter
“
Configuring ATM
” in the
Cisco IOS Wide-Area Networking Configuration Guide
, Release 12.3.
Restrictions for ATM OAM Ping
The ATM OAM Ping feature does not support pings based on the following:
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Network service access point (NSAP) addresses
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Multiple-hop loopbacks
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Loopback location identification
Information About ATM OAM Ping
To use the ATM OAM Ping, you must understand the following concept:
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Uses for ATM OAM Ping Command
The ATM OAM Ping feature modifies the ping command, which can be used to send an OAM packet to
verify the PVC connectivity. The status of the PVC is displayed when a response to the OAM packet is
received. This is a common method for testing the accessibility of the devices.
verify the PVC connectivity. The status of the PVC is displayed when a response to the OAM packet is
received. This is a common method for testing the accessibility of the devices.
The ping atm interface atm command provides two ATM OAM ping options:
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End loopback—Verifies end-to-end PVC integrity.
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Segment loopback—Verifies PVC integrity to the immediate neighboring ATM device.
The ping atm interface atm command is used to determine the following:
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Whether a remote host is active or inactive.
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The round-trip delay in communicating with the host.
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Packet loss.