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Difference between revisions of "DHCP Log"

Line 20: Line 20:
 
| Hostname || DHCP client's hostname.
 
| Hostname || DHCP client's hostname.
 
|-
 
|-
−
| Pool name || The name of the DHCP pool.
+
| DHCP Pool || The name of the DHCP pool.
 
|-
 
|-
 
| DUID<br>IAID || The [[DUID and IAID | DUID / IAID ]] of the DHCPv6 client.
 
| DUID<br>IAID || The [[DUID and IAID | DUID / IAID ]] of the DHCPv6 client.
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==== PostDHCP ====
 
==== PostDHCP ====
 
The imRAD records the result of processing the requests of DHCP clients as the PostDHCP to notify why a client was not allocated an IP address. By default, it only displays the results of failure(recommended) and you can change the setting using the CLI to save all results(failure and success).
 
The imRAD records the result of processing the requests of DHCP clients as the PostDHCP to notify why a client was not allocated an IP address. By default, it only displays the results of failure(recommended) and you can change the setting using the CLI to save all results(failure and success).
−
The failure means that a DHCP server dose not reply to DHCP clients because of the specific reason. You can make sure what the reply means in the DHCP reply results.
+
The failure means that a DHCP server dose not reply to DHCP clients because of the specific [[DHCP failure messages | reason ]]. You can make sure what the failure means in the [[DHCP failure messages]].
  
−
 
+
If the imRAD does not receive messages from clients, none of logs from the clients are recorded.
−
DHCP 클라이언트의 요청에 서버가 응답하지 못한 경우 그 원인을 제공하기 위한 이력입니다.<br>
+
In such a case, you must make sure that the request from clients will be relaying to the imRAD.
−
본 시슽템을 운영하는 과정에서 특정 클라이언트에 IP 주소 할당이 안되는 경우 이 이력을 통해 그 원인을 분석 할 수 있습니다.<br>
+
The layer 3 switch or router in the VLAN of clients relays the DHCP message to a DHCP server because clients broadcast the DHCP message. It is called "bootp-relay" or "DHCP helper".
−
단, DHCP 처리 이력이 생성되지 않으면 본 시스템에 어떠한 클라이언트의 요청도 수신되지 않는 경우므로 라우터 혹은 L3 스위치 장비의 DHCP Helper 혹은 bootp-relay 설정을 확인하세요.<br>
+
−
이 이력은 당일만 생성(자정 기준)되며 지난 이력은 자동으로 삭제됩니다.
+
The imRAD keeps only today's postDHCP log, which means all logs are cleared at every 0 o'clock.
  
 
{| class="wikitable"
 
{| class="wikitable"
−
! 항목 !! 설명
+
! Columns !! Description
 
|-
 
|-
−
| 처리 시간 || 요청이 발생되어 기록된 시간
+
| datetime || The date and time at which a log was recorded.
 
|-
 
|-
−
| MAC 주소 || DHCP 클라이언트의 [[MAC 주소]]
+
| [[MAC Address]] || The ethernet hardware address of the DHCP clients.
 
|-
 
|-
−
| 호스트 이름 || DHCP 클라이언트의 이름(컴퓨터 이름)
+
| Hostname || DHCP client's hostname.
 
|-
 
|-
−
| DHCP 범위 이름 || DHCP 클라이언트가 IP 주소를 요청한 범위
+
| DHCP Pool || The name of the DHCP pool for clients.<br>If the name is "unknown", It means that server could not select a DHCP pool because of a [[DHCP failure messages | reason ]].
 
|-
 
|-
−
| 처리 시스템 || 요청을 처리한 imRAD 시스템 IP 주소
+
| DHCP Server || The imRAD IP address that records the log.
 
|-
 
|-
−
| Helper IP 주소 || DHCP 클라이언트의 요청을 전송한 Helper(L3 스위치 혹은 라우터)의 IP 주소<br>
+
| Helper IP Address || DHCP 클라이언트의 요청을 전송한 Helper(L3 스위치 혹은 라우터)의 IP 주소<br>
 
(이 주소를 통해 클라이언트의 위치를 판단합니다.)
 
(이 주소를 통해 클라이언트의 위치를 판단합니다.)
 
|-
 
|-
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|-
 
|-
 
| 응답결과 || [[DHCP 처리 응답 결과]]를 참고하십시요.
 
| 응답결과 || [[DHCP 처리 응답 결과]]를 참고하십시요.
 +
|-
 +
| [[VCID]] || Vendor Class Identifier
 
|-
 
|-
 
|}
 
|}

Revision as of 15:55, 8 March 2021

DHCP > Log

Lease

The imRAD stores logs for assigned, released, expired, and declined IP addresses. These logs do not include reply for the "RENEW" and "REBIND" message but "DISCOVER-REQUEST-ACK(DHCPv4)" or "SOLICIT-REQUEST-REPLY(DHCPv6).

Columns Description
datetime The date and time at which a log was recorded.
status The status of IP address.
IP Address The IP address that was assigned, released, expired, or declined.
MAC Address The ethernet hardware address of the DHCP clients.
DHCP Server The IP address of one of imRADs.
Hostname DHCP client's hostname.
DHCP Pool The name of the DHCP pool.
DUID
IAID		 The DUID / IAID of the DHCPv6 client.

PostDHCP

The imRAD records the result of processing the requests of DHCP clients as the PostDHCP to notify why a client was not allocated an IP address. By default, it only displays the results of failure(recommended) and you can change the setting using the CLI to save all results(failure and success). The failure means that a DHCP server dose not reply to DHCP clients because of the specific reason . You can make sure what the failure means in the DHCP failure messages.

If the imRAD does not receive messages from clients, none of logs from the clients are recorded. In such a case, you must make sure that the request from clients will be relaying to the imRAD. The layer 3 switch or router in the VLAN of clients relays the DHCP message to a DHCP server because clients broadcast the DHCP message. It is called "bootp-relay" or "DHCP helper".

The imRAD keeps only today's postDHCP log, which means all logs are cleared at every 0 o'clock.

Columns Description
datetime The date and time at which a log was recorded.
MAC Address The ethernet hardware address of the DHCP clients.
Hostname DHCP client's hostname.
DHCP Pool The name of the DHCP pool for clients.
If the name is "unknown", It means that server could not select a DHCP pool because of a reason .
DHCP Server The imRAD IP address that records the log.
Helper IP Address DHCP 클라이언트의 요청을 전송한 Helper(L3 스위치 혹은 라우터)의 IP 주소

(이 주소를 통해 클라이언트의 위치를 판단합니다.)

요청 형식 DHCP 요청 형식
요청 서버 주소 DHCP 클라이언트가 요청 패킷 전송시 포함한 대상 서버 주소
요청 IP 주소 DHCP 클라이언트가 요청 패킷 전송시 요청한 IP 주소
응답결과 DHCP 처리 응답 결과를 참고하십시요.
VCID Vendor Class Identifier