Avaya Troubleshooting Routers Guía para resolver problemas descargar pdf (Pagina 84)

Troubleshooting Routers

5-6

308656-14.00 Rev 00

Match the error code in the message to the Error Code column in

Tabl e 5-5

, and follow the associated instructions.

Upper-Layer Protocols Failing to Pass Packets

If the interfaces are receiving and transmitting frames, but the upper-layer

protocols are failing to pass packets to ATM, do the following:

Find the message indicating that Data Path created a gate for the VC.

The message looks like this:

# 316: mm/dd/yy 14:57:42.417 DEBUG SLOT 3 DP Code: 23

Adding VC gate w/GH 0x627e to cct 3

The abbreviation w/GH stands for “with gate handle.” A gate handle is the

logical address of a process.

Check the remaining log messages to make sure that the operating system

did not kill this gate.

Verify that payload scrambling is either disabled or enabled on both sides

of the ATM connection.

If there is a mismatch, the router will receive data and there will be no errors,

but data will disappear. Scrambling is enabled on the router by default and

cannot be disabled on non-DS3 ARE ATM interfaces, but can be enabled or

disabled on FREII/FRE 60 ATM interfaces.

Table 5-5. Error Codes in the “ATM VC mod failed” Log Message

Error Code Meaning Instructions

ATM_ERR_BAD_VC The driver is already using

the VPI/VCI.

Use a different channel.

ATM_ERR_NO_RESOURCE The bandwidth is insufficient

to satisfy the request.

Lower the cell rates.

ATM_ERR_NO_VC_AVAIL The maximum number of VCs

are already in use.

Increase the maximum

number of VCs.

ATM_ERR_COP_ERR The coprocessor returned an

error.

Document the error and

call the Nortel Networks

Technical Solutions

Center.

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Avaya Troubleshooting Routers Guía para resolver problemas Pagina 84