Looking at ifAdminStatus (1.3.6.1.2.1.2.2.1.7). I'm pulling it as a guage. It should only return a 1 or a 2 (up/down) of type integer. Whenever I do an SNMP walk that is all I see:

[zenoss@bigzenosstest CustomComponents]$ snmpwalk -vXXX -cXXX X.X.X.X 1.3.6.1.2.1.2.2.1.7

IF-MIB::ifAdminStatus.1 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10101 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10102 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10103 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10104 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10105 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10106 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10107 = INTEGER: down(2)

IF-MIB::ifAdminStatus.10108 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10109 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10110 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10111 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10112 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10113 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10114 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10115 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10116 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10117 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10118 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10119 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10120 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10121 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10122 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10123 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10124 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10125 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10126 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10127 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10128 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10201 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10202 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10501 = INTEGER: up(1)

IF-MIB::ifAdminStatus.10502 = INTEGER: up(1)

Here is my RRD Archive header - as you can see it is of type gauge:

<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>

        <step> 300 </step> <!-- Seconds -->

        <lastupdate> 1315504776 </lastupdate> <!-- 2011-09-08 13:59:36 EDT -->

        <ds>

                <name> ds0 </name>

                <type> GAUGE </type>

                <minimal_heartbeat> 900 </minimal_heartbeat>

                <min> NaN </min>

                <max> NaN </max>

                <!-- PDP Status -->

                <last_ds> 2.0 </last_ds>

                <value> 5.5352637800e+02 </value>

                <unknown_sec> 0 </unknown_sec>

        </ds>

<!-- Round Robin Archives -->   <rra>

                <cf> AVERAGE </cf>

                <pdp_per_row> 1 </pdp_per_row> <!-- 300 seconds -->

                <params>

                <xff> 5.0000000000e-01 </xff>

                </params>

                <cdp_prep>

                        <ds>

                        <primary_value> 1.6305668200e+00 </primary_value>

                        <secondary_value> 1.0000000000e+00 </secondary_value>

                        <value> NaN </value>

                        <unknown_datapoints> 0 </unknown_datapoints>

                        </ds>

                </cdp_prep>

                <database>

When I shut/noshut the interface I would expect only 1s and 2s in my RRA. However when I shut the interface down for one poll I get 1.61 and then it gets up to 2 on the next. Likewise, when I do a no shutdown (should go 2 to 1) I get a 1.37 between the 2 and 1 polls. It's my understanding that this should not be happening with Guage. Has anyone see this behavior before? This is on a Cisco 3560 for reference.