Chapter 6 Troubleshooting The Control Plane Ethernet Network; Cisco Crs-1 Control Plane Ethernet Network Overview - Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual

Troubleshooting the Control Plane Ethernet
Network
This chapter describes techniques that you can use to troubleshoot the control plane Ethernet network
on routers using Cisco IOS XR software. It includes the following sections:
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Cisco CRS-1 Control Plane Ethernet Network Overview

The system control plane Ethernet network is used for processes on different devices to communicate
for functions such as system device discovery, image transfers, heartbeat messages, alarms, and
configuration management.
All devices in a system using Cisco IOS XR software connect to the system control plane Ethernet
network. There are two control planes in the control Ethernet topology:
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See
See
Two external Catalyst switches (WS-C6509-NEB-A) are used to provide connectivity between the FCC
and LCCs. In the Cisco CRS-1 Multishelf System, the system control plane links from each route
processor (RP) and shelf controller (SC) connect to an external Catalyst switch. RPs and SCs are not
directly connected to each other. See
OL-21483-02
Cisco CRS-1 Control Plane Ethernet Network Overview, page 6-147
Using the Online Diagnostics Tools, page 6-148
Troubleshooting Booting the System Control Plane Ethernet Network, page 6-149
Troubleshooting the Multishelf System Router Topology, page 6-153
Troubleshooting the CRS-1, 4-slot, 8-slot, or 16-slot System Router Topology, page 6-159
Intrachassis—Within a chassis, the control plane is provided using Fast Ethernet (FE) links between
nodes. The FE links are internal to the chassis and cannot be removed.
Interchassis—System Control Plane connectivity between chassis in the system is provided using
Gigabit Ethernet (GE) links. Two links are presented on the front of each of the route processors
(active and standby) in each of the line card chassis (LCCs) and shelf controllers (active and
standby) in the fabric card chassis (FCC). Two ports are provided for redundancy purposes. This
control plane is supported on the Cisco CRS-1 Multishelf System only.
Figure 6-1 for an illustration of the Cisco CRS-1 control plane Ethernet network
Figure 6-2 for an illustration of the Cisco CRS-1 Multishelf System control plane Ethernet network.
C H A P T E R
Figure 6-2.
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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