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UDT timeout on Catalyst 9k switches

tmacca over 5 years ago

I have had this issue for over a year now

UDT never populates any information for devices connected on 9300 switches, on Fuji (16.9.x) or above - I have approximately 80 units behaving exactly the same way

Earlier versions were fine

Tried many different versions of firmware (currently on 16.9.5, but behaviour is the same in Gibraltar 16.12.x)

This problem is getting worse as we swap EOL switches out for 9300 - around 10-15% of our estate has no UDT information

Solarwinds blame Cisco - Cisco blame Solarwinds.

Using UDT Compatibility Checker - vmMembershipSummaryTable returns all the correct VLANs,

However, it then receives a 'Not Supported' response when querying the 'dot1TpFdbTable' and therefore just times out on when querying all the dot1d tables - suggesting it is a Cisco problem.

But getting them to acknowledge it is painful

Anyone else having issues? I cant be the only person in the world using 9300 switches and UDT?

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0 k1gaudineer over 2 years ago

Add my organization to this list as well. We are moving from Cisco 2960s & 2960x switches to the Cisco 9200R with CAT9k_Lite_IOSXE 17.5.3 and the UDT information is disappearing from our landscape more and more each day. This is very frustrating since for many many years this information has been readily available and suddenly it's not....
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0 keithknowles over 2 years ago in reply to k1gaudineer

We ran into this same issue as well, we resolved it by moving to SNMPv3 for layer 2/3 polling and filter out the old purpose-use VLANs that come with a Cisco switch (1002-1005) which was causing a timeout for the polling on the backend. I have it working on 17.6.4, havent tried 17.6.5 yet
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0 keithknowles over 2 years ago in reply to keithknowles

Here is an example of a working SNMPv3 config for a 9200/9200L

no snmp-server system-shutdown
no snmp-server trap-timeout 180

snmp-server packetsize 1400
snmp-server queue-length 20

snmp-server ifindex persist

!

ip access-list standard SNMP

10 permit <SNMPSERVERIP>

20 deny any log

!
snmp-server contact <CONTACTINFO>
!

snmp-server view SNMPv3SWView iso included
snmp-server group SNMPv3SWGroup v3 priv read SNMPv3SWView write SNMPv3SWView

snmp-server group SNMPv3SWGroup v3 priv context vlan match prefix

snmp-server host <SNMPSERVERIP> informs version 3 priv SNMPv3SolarWinds

!

snmp-server user SNMPv3SolarWinds SNMPv3SWGroup v3 auth SHA "<SNMPv3PASSWORD>" priv AES 128 "<SNMPv3PASSWORD>" access SNMP
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0 keithknowles over 2 years ago in reply to keithknowles

Here is an example of a working SNMPv3 config for a 9200/9200L

no snmp-server system-shutdown
no snmp-server trap-timeout 180

snmp-server packetsize 1400
snmp-server queue-length 20

snmp-server ifindex persist

!

ip access-list standard SNMP

10 permit <SNMPSERVERIP>

20 deny any log

!
snmp-server contact <CONTACTINFO>
!

snmp-server view SNMPv3SWView iso included
snmp-server group SNMPv3SWGroup v3 priv read SNMPv3SWView write SNMPv3SWView

snmp-server group SNMPv3SWGroup v3 priv context vlan match prefix

snmp-server host <SNMPSERVERIP> informs version 3 priv SNMPv3SolarWinds

!

snmp-server user SNMPv3SolarWinds SNMPv3SWGroup v3 auth SHA "<SNMPv3PASSWORD>" priv AES 128 "<SNMPv3PASSWORD>" access SNMP
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