We have a very odd problem with an
Arista switch that sits in the center of
our data center. It has IP 10.1.2.3.
Recently, I noticed that when I looked
up the device in netdisco, it was
reporting with the IP 192.168.1.2.
That IP address belongs to a host
on a VLAN that runs through the Arista
switch. But the host is a host, it
isn't running an L2 discovery protocol,
it has another (Brocade) switch between
it and the Arista switch, so I have no
idea how the Arista switch is reporting
the host IP address
instead of its own.
I ran a discover with debug enabled in
hopes that someone might be able to
provide some hint about the cause of
trouble (or some additional recommendations
on troubleshooting).
I've truncated the output as it didn't seem
like all of it would be useful.
Suggestions welcome.
best,
mark
netdisco@noc-prod-netdisco-2 ~]$ netdisco-do discover -d aristaswitch
-DIQ
SELECT me.version, me.installed
FROM dbix_class_schema_versions me
WHERE 1 = 0
SELECT me.version
FROM dbix_class_schema_versions me
ORDER BY installed DESC
LIMIT '1'
SELECT me.ip, me.alias, me.subnet, me.port, me.dns, me.creation
FROM device_ip me
WHERE me.alias = '10.1.2.3' AND me.ip = '10.1.2.3'
SELECT me.ip, me.alias, me.subnet, me.port, me.dns, me.creation
FROM device_ip me
WHERE alias = '10.1.2.3'
SELECT me.ip, me.creation, me.dns, me.description, me.uptime,
me.contact, me.name [1], me.location, me.layers, me.ports, me.mac,
me.serial, me.model, me.ps1_type, me.ps2_type, me.ps1_status,
me.ps2_status, me.fan, me.slots, me.vendor, me.os, me.os_ver, me.log,
me.snmp_ver, me.snmp_comm, me.snmp_class, me.vtp_domain,
me.last_discover, me.last_macsuck, me.last_arpnip, to_char(
last_arpnip, 'YYYY-MM-DD HH24:MI' ), to_char( last_discover,
'YYYY-MM-DD HH24:MI' ), to_char( last_macsuck, 'YYYY-MM-DD HH24:MI' ),
extract( epoch
FROM age( now( ), last_arpnip ) ), extract( epoch
FROM age( now( ), last_discover ) ), extract( epoch
FROM age( now( ), last_macsuck ) ), replace( age( timestamp
'epoch' + uptime / 100 * interval '1 second', timestamp '1970-01-01
00:00:00-00' ) ::text, 'mon', 'month' )
FROM device me
WHERE me.ip = '10.1.2.3'
[20828] 2017-08-09 22:50:15 info discover: [10.1.2.3] started at Wed
Aug 9 15:50:15 2017
SELECT me.ip, me.snmp_comm_rw, me.snmp_auth_tag_read,
me.snmp_auth_tag_write
FROM community me
WHERE me.ip = '10.1.2.3'
SELECT me.ip, me.snmp_comm_rw, me.snmp_auth_tag_read,
me.snmp_auth_tag_write
FROM community me
WHERE me.ip = '10.1.2.3'
[20828] 2017-08-09 22:50:15 debug [10.1.2.3] try_connect with ver: 3,
class: SNMP::Info, comm: <hidden>
SNMP::Info::_global uptime : DISMAN-EVENT-MIB::sysUpTimeInstance :
.1.3.6.1.2.1.1.3.0
SNMP::Info::_validate_autoload_method(CARP_TRACE) Unable to resolve
method.
SNMP::Info::_global(uptime) Unknown user name at
/home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 180.
[20828] 2017-08-09 22:50:16 debug [10.1.2.3] try_connect with ver: 3,
class: SNMP::Info, comm: <hidden>
SNMP::Info::_global uptime : DISMAN-EVENT-MIB::sysUpTimeInstance :
.1.3.6.1.2.1.1.3.0
SNMP::Info::_validate_autoload_method(CARP_TRACE) Unable to resolve
method.
SNMP::Info::_global(uptime) Unknown user name at
/home/netdisco/perl5/lib/perl5/App/Netdisco/Util/SNMP.pm line 180.
[20828] 2017-08-09 22:50:16 debug [10.1.2.3] try_connect with ver: 2,
class: SNMP::Info, comm: <hidden>
SNMP::Info::_global uptime : DISMAN-EVENT-MIB::sysUpTimeInstance :
.1.3.6.1.2.1.1.3.0
SNMP::Info::_global layers : SNMPv2-MIB::sysServices.0 :
.1.3.6.1.2.1.1.7.0
SNMP::Info::_global description : SNMPv2-MIB::sysDescr.0 :
.1.3.6.1.2.1.1.1.0
SNMP::Info::_global id : SNMPv2-MIB::sysObjectID.0 :
.1.3.6.1.2.1.1.2.0
SNMP::Info 3.37
SNMP::Info::device_type() layers:00001110 id:30065 sysDescr:"Arista
Networks EOS version 4.12.5.1 running on an Arista Networks DCS-7504"
SNMP::Info 3.37
SNMP::Info::device_type() layers:00001110 id:30065 sysDescr:"Arista
Networks EOS version 4.12.5.1 running on an Arista Networks DCS-7504"
[20828] 2017-08-09 22:50:16 debug [10.1.2.3] try_connect with ver: 2,
new class: SNMP::Info::Layer3::Arista, comm: <hidden>
SNMP::Info::_load_attr ip_index : IP-MIB::ipAdEntIfIndex :
.1.3.6.1.2.1.4.20.1.2
SNMP::Info::_load_attr i_index : IF-MIB::ifIndex :
.1.3.6.1.2.1.2.2.1.1
SNMP::Info::_load_attr i_description : IF-MIB::ifDescr :
.1.3.6.1.2.1.2.2.1.2
SNMP::Info::_load_attr ip_netmask : IP-MIB::ipAdEntNetMask :
.1.3.6.1.2.1.4.20.1.3
[20828] 2017-08-09 22:50:17 debug [10.1.2.3] device - aliased as
10.1.2.3
[20828] 2017-08-09 22:50:17 debug [10.1.2.3] device - aliased as
172.16.90.1
[20828] 2017-08-09 22:50:17 debug resolving 2 aliases with max 50
outstanding requests
SNMP::Info::_validate_autoload_method(vtp_d_name) Unable to resolve
method.
SNMP::Info::_global description : SNMPv2-MIB::sysDescr.0 :
.1.3.6.1.2.1.1.1.0
SNMP::Info::_global uptime : DISMAN-EVENT-MIB::sysUpTimeInstance :
.1.3.6.1.2.1.1.3.0
SNMP::Info::_global name : SNMPv2-MIB::sysName.0 : .1.3.6.1.2.1.1.5.0
SNMP::Info::_global layers : SNMPv2-MIB::sysServices.0 :
.1.3.6.1.2.1.1.7.0
SNMP::Info::_global ports : IF-MIB::ifNumber.0 : .1.3.6.1.2.1.2.1.0
SNMP::Info::_global mac : IF-MIB::ifPhysAddress.1 :
.1.3.6.1.2.1.2.2.1.6.1
SNMP::Info::_validate_autoload_method(CARP_TRACE) Unable to resolve
method.
SNMP::Info::_global(mac) NOSUCHINSTANCE at
/home/netdisco/perl5/lib/perl5/App/Netdisco/Core/Discover.pm line 186.
SNMP::Info::_validate_autoload_method(ps1_type) Unable to resolve
method.
SNMP::Info::_validate_autoload_method(ps2_type) Unable to resolve
method.
SNMP::Info::_validate_autoload_method(ps1_status) Unable to resolve
method.
SNMP::Info::_validate_autoload_method(ps2_status) Unable to resolve
method.
SNMP::Info::_validate_autoload_method(fan) Unable to resolve method.
SNMP::Info::_validate_autoload_method(slots) Unable to resolve method.
SNMP::Info::_global id : SNMPv2-MIB::sysObjectID.0 :
.1.3.6.1.2.1.1.2.0
SNMP::Info::_global serial1 : CISCO-SMI::temporary.6.3.0 :
.1.3.6.1.4.1.9.3.6.3.0
SNMP::Info::_validate_autoload_method(CARP_TRACE) Unable to resolve
method.
SNMP::Info::_global(serial1) NOSUCHOBJECT at
/home/netdisco/perl5/lib/perl5/App/Netdisco/Core/Discover.pm line 190.
SNMP::Info::_load_attr e_parent : ENTITY-MIB::entPhysicalContainedIn :
.1.3.6.1.2.1.47.1.1.1.1.4
SNMP::Info::_load_attr e_serial : ENTITY-MIB::entPhysicalSerialNum(1)
: .1.3.6.1.2.1.47.1.1.1.1.11.1
SNMP::Info::_global contact : SNMPv2-MIB::sysContact.0 :
.1.3.6.1.2.1.1.4.0
SNMP::Info::_global location : SNMPv2-MIB::sysLocation.0 :
.1.3.6.1.2.1.1.6.0
BEGIN WORK
DELETE FROM device_ip
WHERE ip = '10.1.2.3'
[20828] 2017-08-09 22:50:17 debug [10.1.2.3] device - removed 0
aliases
INSERT INTO device( contact, description, dns, fan, ip, last_discover,
layers, location, mac, model, name, os, os_ver, ports, ps1_status,
ps1_type, ps2_status, ps2_type, serial, slots, snmp_class, snmp_comm,
snmp_ver, uptime, vendor )
VALUES( '', 'Arista Networks EOS version 4.12.5.1 running on an
Arista Networks DCS-7504', 'aristaswitch.ucsc.edu [2]', NULL,
'10.1.2.3', now( ), '00001110', '', NULL, 'DCS7504', 'dca', 'EOS',
'4.12.5.1', '166', NULL, NULL, NULL, NULL, 'JSH12490569', NULL,
'SNMP::Info::Layer3::Arista', 'XXX', '2', '3030342205', 'arista' )
SAVEPOINT savepoint_0
INSERT INTO device_ip( alias, dns, ip, port, subnet )
VALUES( ?, ?, ?, ?, ? ) : '__BULK_INSERT__'
RELEASE SAVEPOINT savepoint_0
[20828] 2017-08-09 22:50:18 debug [10.1.2.3] device - added 2 new
aliases
COMMIT
BEGIN WORK
DELETE FROM device_ip
WHERE ip IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
DELETE FROM device_vlan
WHERE ip IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
DELETE FROM device_power
WHERE ip IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
DELETE FROM device_module
WHERE ip IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
DELETE FROM community
WHERE ip IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
DELETE FROM admin
WHERE device IN (
SELECT me.ip
FROM device me
WHERE ip = '192.168.1.2' AND serial = 'JSH12490569' AND vendor =
'arista'
)
Links:
------
[1] http://me.name
[2] http://aristaswitch.ucsc.edu
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