Technical Documentation
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Monitoring DHCP Option 60 Information
Purpose
Display configuration and action information for the DHCP vendor-option (option 60) feature.
- Use the command without additional keywords to display information for all vendor option configurations.
- Use the vendor-option-relay-server keyword and server address to display information for option 60 strings that match a configured string that results in the packets being sent to the specified vendor-option server.
- Use the default keyword to display information for option 60 strings that do not match a configured vendor-option string.
Action
To display information for all vendor option configurations:
host1#show dhcp vendor-option
Codes:
* - the configured vendor-string is an exact-match
default - all DHCP client packets not matching a configured vendor-string
implied - the DHCP application is configured but has not been enabled
with the vendor-option command
drop - the DHCP application responsible for the action has not been
configured yet therefore all packets for this application
will be dropped
Total 4 entries.
Vendor-option Action
-------------------------------- ----------------------------------------
Juniper relay to 10.10.1.1 (rx: 0)
default(*) relay to 192.168.5.5 (rx: 0, no-match: 0)
someString(*) relay to 192.168.7.7 (rx: 0)
someString2(*) local-server (rx: 0) To display information for option 60 strings that match a configured string:
host1#show dhcp vendor-option vendor-option-relay-server 10.10.1.1
Codes:
* - the configured vendor-string is an exact-match
default - all DHCP client packets not matching a configured vendor-string
implied - the DHCP application is configured but has not been enabled
with the vendor-option command
drop - the DHCP application responsible for the action has not been
configured yet therefore all packets for this application
will be dropped
Total 4 entries.
Vendor-option Action
-------------------------------- ----------------------------------------
Juniper relay to 10.10.1.1 (rx: 0) Meaning
Table 1 lists the show dhcp vendor-option command output fields.
Table 1: show dhcp vendor-option Output Fields
Field Name | Field Description |
|---|---|
Vendor-option | Option 60 string; an asterisk (*) indicates that the string exactly matches a configured option 60 string, default indicates the action to take when the string does not match a configured option 60 string |
Action | Action to take for the indicated string match; drop, forward to local-server, proxy client server, or all configured DHCP vendor option servers; or relay to the specified DHCP server |
rx | Received packets that match a vendor-option string |
no-match | Received packets that do not match a vendor-option string; no-match statistics appear only for default entries |
