Allied Telesis AT-S63 - Manual (Page 282)

Chapter 20: SNMPv3 Commands
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The following command modifies the community table entry with an
index of 52. The community has a password of “oldmiss71” and a
security name of “jjhuser234.” The transport tag is set to “testtag40.”
set snmpv3 community index=52 communityname=oldmiss71
securityname=jjhuser234 transporttag=testtag40