Troubleshooting guide

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ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 10 Troubleshooting Ethernet, ATM Uplink, and POS Uplink Interfaces
Troubleshooting ACL Daughter Card
• k1/k2—used for Automatic Protection Switching (APS)
• s1s0—(2 bits) not used by SONET, may need to be configured for SDH
Step 16 Check the PSBF field—It is an inexact count of the number of times a protection switching byte failure
has been detected (no three consecutive SONET frames contain identical K1 bytes).
Step 17 Check the PSBF_state field—It lists protection switching byte failure state.
Step 18 Check the Rx(K1/K2)/Tx(K1/K2) field—It lists contents of the received and transmitted K1 and K2
bytes.
Step 19 Check the S1S0 field—It lists the two S bits received in the last H1 byte.
Step 20 Check the C2 field—It lists the value extracted from the SONET path signal label byte (C2).
Step 21 Check the PATH TRACE BUFFER field—It lists the SONET path trace buffer is used to communicate
information regarding the remote hostname, interface name/number, and IP address. This is a
Cisco-proprietary use of the J1 (path trace) byte.
Step 22 Check the BER thresholds field—It list of the bit-error rate (BER) thresholds you configured with the
pos threshold interface command.
Step 23 Check the TCA thresholds field—It list of threshold crossing alarms (TCA) you configured with the pos
threshold interface command.
If you determine that the interface is configured incorrectly, refer to the “Configuring Interfaces” chapter
in the Layer 3 Switching Software Feature and Configuration Guide.
Troubleshooting ACL Daughter Card
The access control list (ACL) daughter card implements data-plane access lists in hardware, providing
high-speed performance. This extends the traffic control and security capabilities of the Catalyst 8540
beyond control-plane access lists, which are currently supported. See the “Comparing Data Plane and
Control Plane Traffic” section on page 11-20.
The ACL daughter cards can be used with existing 10/100BASE-TX, 100BASE-FX, and Gigabit
Ethernet interface modules on the switch router. The ACL daughter cards provide data-plane ACL
functionality for both IP and IPX traffic.
The switch router supports control-plane access lists such as permit and deny IP and IPX routes and IPX
Service Advertisement Protocol (SAP) filtering without the daughter card. The daughter card enables
data-plane ACLs for IP and IPX traffic.
The ACL daughter card is a field-replaceable unit that can be mounted onto the following switch router
interface modules:
• Two-port Gigabit Ethernet
• 10/100BASE-T Ethernet
• 100BASE-FX Ethernet
Note The eight-port Gigabit Ethernet interface module does not support the ACL daughter card. The
enhanced Gigabit Ethernet interface modules have built-in ACL functionality.