Cisco Catalyst 2960-XR User Manual

number corresponds to the switch number in the stack. The switch uses the packet formats when you globally
enable DHCP snooping and enter the ip dhcp snooping information option global configuration command.
Figure 13: Suboption Packet Formats
The illustration, User-Configured Suboption Packet Formats, shows the packet formats for user-configured
remote-ID and circuit-ID suboptions The switch uses these packet formats when DHCP snooping is globally
enabled and when the ip dhcp snooping information option format remote-id global configuration command
and theip dhcp snooping vlan information option format-type circuit-id string interface configuration
command are entered.
The values for these fields in the packets change from the default values when you configure the remote-ID
and circuit-ID suboptions:
•
Circuit-ID suboption fields
◦
The circuit-ID type is 1.
◦
The length values are variable, depending on the length of the string that you configure.
•
Remote-ID suboption fields
◦
The remote-ID type is 1.
Catalyst 2960-XR Switch Security Configuration Guide, Cisco IOS Release 15.0(2)EX1
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Configuring DHCP
Option-82 Data Insertion

Cisco Catalyst 2960-XR Specifications

General

Stacking Bandwidth	80 Gbps
Layer Support	Layer 2 and Layer 3
Jumbo Frame Support	9198 bytes
RAM	512 MB
Input Voltage	100-240V AC
Model	Catalyst 2960-XR
Uplink Interfaces	4 x 1G SFP or 2 x 10G SFP+
Downlink Interfaces	24 or 48 x Gigabit Ethernet ports
Power Supply	Internal
MAC Address Table Size	16, 000 entries
PoE	Available on PoE models
Weight	4.5 kg
Features	energy efficiency
Stacking	Up to 8 switches
Operating Temperature	0 to 45°C