Cisco Systems A9014CFD manual Image Download, Zero-touch Deployment

Chapter 4 Managing and Monitoring Network Management Features

How to Configure Network Management Features on ASR 901

Figure 4-1 Zero-touch Deployment

DHCP Server

Cisco ASR 901 router	L3 Network
with no configurations		TFTP Server
	DHCP Helper

Configuration

Engine

303311

The following steps provide an overview of events that take place during ASR 901 zero-touch deployment.

Step 1 Connect the Cisco ASR 901 without any configurations to an upstream router.

Step 2 The ASR 901 auto-senses the management vlan of the upstream router for IP connectivity by listening to the traffic it receives on the connected interface.

Step 3 The ASR 901 sends DHCP discover messages using the discovered VLAN tag. If the upstream router is not using a management VLAN, untagged DHCP discover messages are sent.

Step 4 The DHCP server responds with a DHCP offer.

Step 5 The ASR 901 sends a DHCP request message to the DHCP server. The DHCP server then sends the DHCP ACK message.

Note Step 6 and 7 are used only when Option 43 is not configured.

Step 6 The ASR 901 requests network-configfile via TFTP.

Step 7 The TFTP server sends the ASR 901 a network-configfile.

Step 8 The ASR 901 sends an HTTP request to the CNS-CE server.

Step 9 The CNS-CE server sends a configuration template to the ASR 901.

Step 10 Publish success event.

Image Download

The following events take place when a CNS-enabled ASR 901 downloads a new image:

Step 1 The CNS-CE server requests inventory (disk/flash info) from the ASR 901-DC.

Step 2 The ASR 901-DC sends an inventory.

Step 3 The CNS-CE server sends an image location.

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09		4-11