Connection Errors Once Mirroring is configured

[Meri_Christmas]

I am working on mirroring a port that is connected to a network analyzer (called Pondurance). The error shows up on the management port of the analyzer itself but I'm checking to make sure my config is correct. It's just a basic local config that I've done before but this mirroring will be done on a catalyst 2960 48p switch which is connected to a 5506x asa. I keep the firmware up to date on both devices.

I am mirroring a the source port that is connected to our firewall.

switch(config)#>monitor session 1 source int Gi1/0/1

switch(config)#>monitor session 1 destination int Gi1/0/2

#show monitor
Session 1
---------
Type : Local Session
Source Ports :
Both : Gi1/0/1
Destination Ports : Gi1/0/2
Encapsulation : Native
Ingress : Disable

Once I set up span, immediately the analyzer status shows "not connected". It's connected until I set this up.

I know the port line shuts down because of monitoring but I have not had this happen where the connection gives errors like this.

What can I check? Can I get some direction on what to look for?

[balaji.bandi]

post the configuration of both the ports

show version

show run interface gig1/0/1 and gig 1/0/2

[Meri_Christmas]

Thank you for your response and apologies for the delayed reply. 

I "inherited" this switch I will either swap it out for a 3850 or reconfigure it, since it was orginally part of a stack. 

SWITCH INFO:

sw01#show version
Cisco IOS Software, C2960X Software (C2960X-UNIVERSALK9-M), Version 15.2(2)E6, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Fri 16-Dec-16 21:27 by prod_rel_team

ROM: Bootstrap program is C2960X boot loader
BOOTLDR: C2960X Boot Loader (C2960X-HBOOT-M) Version 15.2(3r)E1, RELEASE SOFTWARE (fc1)

sw01 uptime is 22 weeks, 5 days, 6 hours, 22 minutes
System returned to ROM by power-on
System restarted at 08:28:44 UTC Sun Nov 6 2022
System image file is "flash:/c2960x-universalk9-mz.152-2.E6/c2960x-universalk9-mz.152-2.E6.bin"
Last reload reason: power-on

cisco WS-C2960X-48FPS-L (APM86XXX) processor (revision L0) with 524288K bytes of memory.
Processor board ID ***********
Last reset from power-on
2 Virtual Ethernet interfaces
1 FastEthernet interface
52 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : *******************
Motherboard assembly number : 73-16691-05
Power supply part number : 341-0527-02
Motherboard serial number : FOC20204TTV
Power supply serial number : DCB2015603W
Model revision number : L0
Motherboard revision number : A0
Model number : WS-C2960X-48FPS-L
Daughterboard assembly number : 73-14200-03
Daughterboard serial number : **************
System serial number : **************
Top Assembly Part Number : 68-100469-01
Top Assembly Revision Number : C0
Version ID : V04
CLEI Code Number : ****************
Daughterboard revision number : A0
Hardware Board Revision Number : 0x18

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 3 52 WS-C2960X-48FPS-L 15.2(2)E6 C2960X-UNIVERSALK9-M

INT CONFIGS:

sw01#show run int gig1/0/1
Building configuration...

Current configuration : 221 bytes
!
interface GigabitEthernet1/0/1
description -- Firewall
switchport mode trunk
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
auto qos trust
spanning-tree link-type point-to-point
end

sw01#show run int gig1/0/2
Building configuration...

Current configuration : 175 bytes
!
interface GigabitEthernet1/0/2
description -- Data
switchport mode access
switchport voice vlan 100
priority-queue out
mls qos trust cos
spanning-tree portfast
end

[balaji.bandi]

interface GigabitEthernet1/0/2  - is this port your analyser connected

reset to default and test it

default interface GigabitEthernet1/0/2

post show interface GigabitEthernet1/0/2

[Meri_Christmas]

Thank you. I connected analyzer.  I reset the port to default, then did a show:

sw01#show int Gi1/0/2
GigabitEthernet1/0/2 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 009e.1ea5.baa3 (bia 009e.1ea5.baa3)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
380 packets input, 46629 bytes, 0 no buffer
Received 92 broadcasts (46 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 46 multicast, 0 pause input
0 input packets with dribble condition detected
380116 packets output, 166088645 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

I checked the console on the network analyzer and it was connected. No problem.

I then configured the span port gig1/0/2 and once again I got a connection error on the analyzer's console.

I removed monitoring from the port so now the port has the default configuration.