MRTG监控华为S3526设备，在makecfg时出错

采集出错信息如下：
C:\mrtg\bin>perl cfgmaker glttmrtg@xxx.xxx.xxx.xxx --global "WorkDir: D:\webroot
gb_s3526" --output gb_s3526.cfg  --snmp-option=::::::2
SNMP Error:
no response received
SNMPv1_Session (remote host: "xxx.xxx.xxx.xxx" [xxx.xxx.xxx.xxx].161)
                  community: "glttmrtg"
                 request ID: -1829736255
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
at C:/mrtg/bin\..\lib\mrtg2/SNMP_util.pm line 627
SNMPWALK Problem for 1.3.6.1.2.1.1 on glttmrtg@xxx.xxx.xxx.xxx::::::v4only
at cfgmaker line 940
WARNING: Skipping glttmrtg@xxx.xxx.xxx.xxx: as no info could be retrieved

设备配置信息如下：

<GL_GB_S3526>dis cu | inclu snmp
snmp-agent
snmp-agent local-engineid 800007DB00E0FC07E4206877
snmp-agent community read  glttmrtg
snmp-agent sys-info location BeiJing China
snmp-agent sys-info version v2c
snmp-agent target-host trap address udp-domain 61.237.15.4 params securityname
glttmrtg
snmp-agent trap enable standard

cfgmaker 语句：
C:\mrtg\bin>perl cfgmaker glttmrtg@61.235.170.118 --global "WorkDir: D:\webroot\
gb_s3526" --output gb_s3526.cfg  --snmp-option=::::::2


请教，是什么原因导致出错，怎么解决，谢谢。