Oir Test (Catalyst 8540 Msr); Snake Test (Catalyst 8540 Msr) - Cisco Catalyst 8540 MSR Configuration Manual

Configuring Online Diagnostics (Catalyst 8540 MSR)
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When the access test detects a hardware failure, the system issues an error message to the console.
If the access test detects a hardware problem with an active switch processor, the standby switch
processor, if it is present, automatically takes over and becomes an active switch processor. The system
generates an SNMP trap when the switchover occurs.
Note The access test does not support the network clock module.

OIR Test (Catalyst 8540 MSR)

Online insertion and removal (OIR) tests check the functioning of the switch fabric and interfaces on a
per-port basis. The switch router performs these tests when the system boots up and when you insert a
port adapter or interface module into a slot. The OIR test sends a packet to the interface loopback and
expects to receive it back within a certain time period. If the packet does not reach the port within the
expected time period, or the route processor receives a corrupted packet, the system issues an error
message to the console, generates an SNMP trap, and brings the port to an administrative down state.
The size of the packet used in the test is configurable.
Note
The OIR tests support all ATM port adapters, all ATM interface modules, all ATM router modules, and
all Layer 3 interface modules except the 8-port Gigabit Ethernet.

Snake Test (Catalyst 8540 MSR)

The snake test detects and reports port-to-port connectivity failures. The snake test establishes a
connection across all the active ports in the switch router, originating and terminating at the primary
route processor. The route processor establishes a connection by sending a packet to each port in turn,
which then terminates at the route processor. If the packet does not reach the route processor within the
expected time period, or the received packet is corrupted, further testing is performed to isolate and
disable the port causing the problem.The size of the packet and frequency of the test are configurable to
minimize the impact on system performance.
The snake test supports Enhanced ATM Router Module (also known as ARMII), all ATM interface
modules and enhanced Gigabit Ethernet interface modules. It does not support ATM port adapters, ATM
router module (also known as ARMI), 16-port 10/100 Fast Ethernet interface modules, 2-port Gigabit
Ethernet interface modules, or 8-port Gigabit Ethernet interface modules.
The snake test does not support ATM port adapters because of a hardware limitation in the
Note
carrier module.
ATM Switch Router Software Configuration Guide
3-20
Feature cards
Carrier modules
ATM port adapters
ATM and Layer 3 interface modules
ATM router modules
Chapter 3 Initially Configuring the ATM Switch Router
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