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show dhcp-security ipv6 binding

date_range 19-Nov-23

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Syntax

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show dhcp-security ipv6 binding
<detail>
<interface interface-name>
<ipv6-address ipv6-address>
<vlan vlan-name>

Description

Display bindings between IPv6 addresses and MAC addresses (IP-MAC bindings) along with other DHCP lease information, also known as the DHCPv6 binding table or DHCPv6 snooping database.

Options

detail	(Optional) Display the DHCPv6 snooping table along with various DHCP client options. The option information associated with a binding is displayed in Code-Length-Value triplet. The option values are displayed as a hex dump. Note: DHCP client options are displayed for DHCPv6 only when the snoop entry type is IA_NA.
interface `interface-name`	(Optional) Display the DHCPv6 snooping table for the specified interface.
ipv6-address `ipv6-address`	(Optional) Display the DHCPv6 snooping table for the specified IPv6 address.
vlan `vlan-name`	(Optional) Display the DHCPv6 snooping table for a VLAN.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show dhcp-security ipv6 binding command. Output fields are listed in the approximate order in which they appear.

The DHCPv6 binding table shows the untrusted access interfaces in VLANs that have been enabled for DHCPv6 snooping. The entries include the IPv6 addresses and MAC addresses that are bound to one another.

Table 1: show dhcp-security ipv6 binding Output Fields
Field Name	Field Description	Level of Output
`IPv6 address`	IPv6 addresses of the network device; bound to the MAC address. There are two entries added for each client: one with the link-local IPv6 address, which is used by the client for DHCP transactions, and another with the IPv6 address assigned by the server. The link-local address always has the prefix fe80::/10.	All levels
`MAC address`	MAC address of the network device; bound to the IPv6 address.	All levels
`VLAN`	VLAN name of the network device whose MAC address is shown.	All levels
`Expires`	The time, in seconds, remaining before the lease of the IPv6 address to the MAC address expires. This field is `0` for static entries.	All levels
`State`	Specifies whether the IPv6 address is: `BOUND`: Temporarily leased to the MAC address for a limited period of time. `STATIC`: Attached to a fixed MAC address.	All levels
`Interface`	Interface address (port).	All levels
`Type`	Shows the snoop entry type, whenever one is present. Snoop entry types can be one of the following: `IA_NA`: The snoop entry related to the IA Address `IA_PD`: The snoop entry related to the IA Prefix `Link-local`: The snoop entry corresponding to the source address of the requesting client. `Static`: The snoop entry created through configuration by a user or admin.	All levels

Sample Output

show dhcp-security ipv6 binding
show dhcp-security ipv6 binding detail
show dhcp-security ipv6 binding interface