Defining An Snmp Group - Brocade Communications Systems FastIron Administration Manual

Defining an SNMP group

NOTE
Since the current implementation of SNMP version 3 does not support Notification, remote engine IDs
cannot be configured at this time.
The hex-string variable consists of 11 octets, entered as hexadecimal values. There are two
hexadecimal characters in each octet. There should be an even number of hexadecimal characters in
an engine ID.
The default engine ID has a maximum of 11 octets:
• Octets 1 through 4 represent the agent's SNMP management private enterprise number as
assigned by the Internet Assigned Numbers Authority (IANA). The most significant bit of Octet 1 is
"1". For example, "000007c7" is the ID for Brocade Communications, Inc. in hexadecimal. With
Octet 1 always equal to "1", the first four octets in the default engine ID is always "800007c7" (which
is 1991 in decimal).
• Octet 5 is always 03 in hexadecimal and indicates that the next set of values represent a MAC
address.
• Octets 6 through 11 form the MAC address of the lowest port in the management module.
NOTE
Engine ID must be a unique number among the various SNMP engines in the management domain.
Using the default engine ID ensures the uniqueness of the numbers.
Defining an SNMP group
SNMP groups map SNMP users to SNMP views. For each SNMP group, you can configure a read
view, a write view, or both. Users who are mapped to a group will use its views for access control.
To configure an SNMP user group, enter a command such as the following.
device(config)#snmp-server group admin v3 auth read all write all
Syntax:[no] snmp-server group groupname { v1 | v2c | v3 { auth | noauth | priv } } [ access {
standard-ACL-id | ipv6 ipv6-ACL-name } ] [ read viewname ] [ write viewname ]
NOTE
This command is not used for SNMP version 1 and SNMP version 2. In these versions, groups and
group views are created internally using community strings. (refer to
page 147.) When a community string is created, two groups are created, based on the community
string name. One group is for SNMP version 1 packets, while the other is for SNMP version 2 packets.
The group groupname parameter defines the name of the SNMP group to be created.
The v1 , v2c , or v3 parameter indicates which version of SNMP is used. In most cases, you will be
using v3, since groups are automatically created in SNMP versions 1 and 2 from community strings.
The auth | noauth parameter determines whether or not authentication will be required to access the
supported views. If auth is selected, then only authenticated packets are allowed to access the view
specified for the user group. Selecting noauth means that no authentication is required to access the
specified view. Selecting priv means that an authentication password will be required from the users.
The access standard-ACL-id parameter is optional. It allows incoming SNMP packets to be filtered
based on the standard ACL attached to the group.
152
SNMP community strings
FastIron Ethernet Switch Administration Guide
on
53-1003625-01