user manual
Table Of Contents
- Cisco Content Services Switch Routing and Bridging Configuration Guide
- Contents
- Preface
- Configuring Interfaces and Circuits
- Interface and Circuit Overview
- Configuring Interfaces
- Configuring an Interface
- Entering a Description for the Interface
- Configuring Interface Duplex and Speed
- Setting Interface Maximum Idle Time
- Bridging an Interface to a VLAN
- Specifying VLAN Trunking for an Interface
- Configuring Spanning-Tree Bridging for a VLAN or a Trunked Interface
- Configuring Port Fast on an Interface
- Showing Interface Configurations
- Shutting Down an Interface
- Shutting Down All Interfaces
- Restarting an Interface
- Restarting All Interfaces
- Configuring Circuits
- Configuring RIP for an IP Interface
- Configuring the Switched Port Analyzer Feature
- Configuring Spanning-Tree Bridging for the CSS
- CSS Spanning-Tree Bridging Quick Start
- Configuring Spanning-Tree Bridge Aging-Time
- Configuring Spanning-Tree Bridge Forward-Time
- Configuring Spanning-Tree Bridge Hello-Time
- Configuring Spanning-Tree Bridge Max-Age
- Configuring Spanning-Tree Bridge Priority
- Disabling Bridge Spanning-Tree
- Showing Bridge Configurations
- Configuring Open Shortest Path First (OSPF)
- OSPF Overview
- CSS OSPF Configuration Quick Start
- Configuring OSPF on the CSS
- Configuring OSPF on a CSS IP Interface
- Showing OSPF Information
- OSPF Configuration in a Startup-Configuration File
- Configuring the Address Resolution Protocol
- Configuring Routing Information Protocol
- Configuring the Internet Protocol
- IP Configuration Quick Start
- Configuring an IP Route
- Disabling an Implicit Service for the Static Route Next Hop
- Configuring an IP Source Route
- Configuring the IP Record Route
- Configuring Box-to-Box Redundancy
- Configuring IP Equal-Cost Multipath
- Forwarding IP Subnet Broadcast Addressed Frames
- Configuring IP Unconditional Bridging
- Configuring IP Opportunistic Layer 3 Forwarding
- Showing IP Configuration Information
- Configuring the Cisco Discovery Protocol
- Configuring the DHCP Relay Agent
- Index
Chapter 8 Configuring the DHCP Relay Agent
Defining the Hops Field Value for Forwarding DHCP Messages
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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01
Defining the Hops Field Value for Forwarding DHCP
Messages
The CSS forwards or discards a DHCP message based on the hops field value in
the BOOTP header. When messages have values in the hops fields that exceed the
maximum value set on the CSS, the CSS discards the message. Use the
dhcp-agent max-hops global configuration command to set the maximum
allowable number in the hops field. By default, the maximum allowable number
is 4. You can set a number from 1 to 15.
For example, to set the maximum allowable value of 10, enter:
(config)# dhcp-agent max-hops 10
To reset the maximum allowable number in the hops field to the default of 4, enter:
(config)# no dhcp-agent max-hops
Displaying the DHCP Relay Configuration
Use the show dhcp-relay-agent global command to display the DHCP
configuration information on the CSS. This command is available in all modes.
For example:
# show dhcp-relay-agent global
Table 8-2 describes the fields in the show dhcp-relay-agent global command
output.
Table 8-2 Field Descriptions for the show dhcp-relay-agent global Command
Field Description
Max Hops The maximum allowable number in the hops field of the
BOOTP header. The CSS does not forward packets with
headers that contain a larger number.
Number of circuits
configured for DHCP
The number of CSS circuits configured for DHCP.
Circuit The circuit configured for DHCP.