MRTG 監測 Fortinet 設備問題

小弟新架設了一台 MRTG Server 準備替換舊有的 MRTG 但是卻發生無法監測 Fortinet 防火牆
環境：
　　新版 MRTG 為 v2.17.4 ，舊版 v2.15.1
　　snmpd.conf 有加入
　　　view systemview included .1.3.6.1.2.1.2
　　　view systemview included .1.3.6.1.2.1.2.2.1.10
　　　view systemview included .1.3.6.1.2.1.2.2.1.16

　　在舊版執行 cfgmaker public@192.168.1.1 > mrtg.cfg 時，沒有錯誤訊息。
　　在新版執行 /usr/local/mrtg-2/bin/cfgmaker public@192.168.1.1 > mrtg.cfg
　　有下述錯誤訊息
--base: Get Device Info on public@192.168.1.1:
SNMP Error:
no response received
SNMPv1_Session (remote host: "192.168.1.1" [192.168.1.1].161)
community: "public"
request ID: 103987905
PDU bufsize: 8000 bytes
timeout: 2s
retries: 5
backoff: 1)
at /usr/local/mrtg-2/bin/../lib/mrtg2/SNMP_util.pm line 651
SNMPWALK Problem for 1.3.6.1.2.1.1 on public@192.168.1.1::::::v4only
at /usr/local/mrtg-2/bin/cfgmaker line 951
WARNING: Skipping public@192.168.1.1: as no info could be retrieved

Use of uninitialized value $comment_sysdescr in substitution (s///) at /usr/local/mrtg-2/bin/cfgmaker line 379.
Use of uninitialized value $sysname in concatenation (.) or string at /usr/local/mrtg-2/bin/cfgmaker line 412.
Use of uninitialized value $comment_sysdescr in concatenation (.) or string at /usr/local/mrtg-2/bin/cfgmaker line 412.
Use of uninitialized value $syscontact in concatenation (.) or string at /usr/local/mrtg-2/bin/cfgmaker line 412.
Use of uninitialized value $syslocation in concatenation (.) or string at /usr/local/mrtg-2/bin/cfgmaker line 412.

　　請問有大大可以幫忙解決嗎？衷心感謝！！