Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

5-132
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 5 Troubleshooting Interfaces
Verifying and Troubleshooting Configured Interfaces
DETAILED STEPS
The following example shows POS 0/0/1/0 with no input drop counters.
RP/0/RP0/CPU0:router# show interfaces pos 0/0/1/0
POS0/0/1/0 is up, line protocol is up
Hardware is Packet over SONET/SDH
Internet address is 172.18.140.1/24
MTU 4474 bytes, BW 155520 Kbit
reliability 255/255, txload 1/255, rxload 1/255
Command or Action Purpose
Step 1
show interfaces type instance
Example:
RP/0/RP0/CPU0:router# show interfaces
gigabitEthernet 0/0/0/0
Displays statistics for all interfaces configured on the
specified node. Check for interface errors.
Step 2
show controllers interface-type
interface-instance
stats
Example:
RP/0/RP0/CPU0:router# show controllers
gigabitEthernet 0/0/0/0 stats
Displays interface controller status and configuration
statistics for the specified node. Check for input drops.
If input drops are found, contact Cisco Technical Support.
For Cisco Technical Support contact information, see the
“Obtaining Documentation and Submitting a Service
Request” section on page viii in the Preface.
Step 3
show netio idb interface-type
interface-instance
Example:
RP/0/RP0/CPU0:router# show netio idb
gigabitEthernet 0/0/0/0
Displays network input and output information for a
specified node.
Check the software counters for the interface. Under Chains
and Protocol chains in the output check if any drops
occurred at a particular point in the Encap or Decap of the
packet. The drops are displayed in the column on the right,
showing drop packets and bytes for each step in the chain.
Step 4
show controllers plim asic statistics interface
type instance
or
show hw-module subslot address counters mac
index
or
show hw-module subslot counters framer
Example:
RP/0/RP0/CPU0:router# show controllers plim
asic statistics interface tenGigE 1/3/0/0
or
RP/0/RP0/CPU0:router# show hw-module subslot
0/0/0 counters mac 0
or
RP/0/RP0/CPU0:router# show hw-module subslot
counters framer
• Use the show controllers plim command for fixed
PLIMs. Check for interface drops on fixed physical
layer interface modules (PLIMs).
• Use the show hw-module subslot address counters
mac command and show hw-module subslot counters
framer command for shared port adapters (SPAs).
Check for interface drops on SPAs.
Check the application-specific integrated circuit (ASIC)
counters for drop counters or error counters incrementing
for the interface.
Step 5
Contact Cisco Technical Support. For Cisco Technical Support contact information, see the
“Obtaining Documentation and Submitting a Service
Request” section on page viii in the Preface.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English