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0 packets input on C9500-48Y4C StackWise Virtual Switch

fhk-cwempe
Beginner
Beginner

I successfully stacked two C9500-48Y4C.

The Uplink (single 10/100/1000BaseTX SFP) works fine.

 

Then I tried to connect a C9200 with an LACP port-channel (Twe1/0/6 and Twe2/0/6).

But I only get:

%ETC-5-L3DONTBNDL2: Twe2/0/6 suspended: LACP currently not enabled on the remote port.

 

To troubleshoot I now wanted to use a single connection without port-channel between the stack and the C9200.

 

Stack:
interface TwentyFiveGigE2/0/6
 switchport trunk allowed vlan 1-1000
 switchport mode trunk

C9200:
interface TenGigabitEthernet1/1/4
 switchport trunk allowed vlan 1-1000
 switchport mode trunk

The C9200 does receive packets (like cdp and vtp) from the stack.

 

But there are not packets incoming on the stack.

TwentyFiveGigE2/0/6 is up, line protocol is up (connected)
  Hardware is Twenty Five Gigabit Ethernet, address is 3c8b.7f00.d386 (bia 3c8b.7f00.d386)
  MTU 1500 bytes, BW 10000000 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, 10Gb/s, link type is auto, media type is SFP-10GBase-SR
  input flow-control is on, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:21:46
  Input queue: 0/2000/0/0 (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 9000 bits/sec, 13 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     14882 packets output, 1130522 bytes, 0 underruns
     Output 1300 broadcasts (0 multicasts)
     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 tried different SFP+-Modules and cables.

 

Any idea where the issue could be?

1 Accepted Solution

Accepted Solutions

fhk-cwempe
Beginner
Beginner

After some troubleshooting tipps ("self loop test") from the sales person, I found out the issue was not between sfp module and C9500, but C9200.

 

It was this bug.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa11962

 

Update C9200 from 17.03.04b to 17.3.5 solved the issue!

View solution in original post

12 Replies 12

balaji.bandi
VIP Community Legend VIP Community Legend
VIP Community Legend

LACP port channel use channel-group mode active

 

stack - Cat 9500 SVL ?

BB

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I know.

I used channel-group mode active to create the Port-Channel.

 

show etherchennel summary showes "LACP" as Protocol.

 

But like I wrote, the issue seems to be deeper, even without port-channel.

 

show stackwise

Stackwise Virtual Configuration:
--------------------------------
Stackwise Virtual : Enabled
Domain Number : 1

Switch  Stackwise Virtual Link  Ports
------  ----------------------  ------
1       1                       HundredGigE1/0/51
                                HundredGigE1/0/52
2       1                       HundredGigE2/0/51
                                HundredGigE2/0/52
Chassis Type: C9500-48Y4C

Switch Number 1

Mod Ports Card Type                                   Model          Serial No.
---+-----+--------------------------------------+--------------+--------------
1   52   Cisco Catalyst 9500 Series Router           C9500-48Y4C      FDO26XXXXXX

Mod MAC addresses                    Hw   Fw           Sw                 Status
---+--------------------------------+----+------------+------------------+--------
1   xxxx.yyyy.D4C0 to xxxx.yyyy.D4F3 2.0  17.3.1r[FC2]  17.05.01           ok

Mod Redundancy Role     Operating Redundancy Mode Configured Redundancy Mode
---+-------------------+-------------------------+---------------------------
1   Active              sso                       sso

Switch Number 2

Mod Ports Card Type                                   Model          Serial No.
---+-----+--------------------------------------+--------------+--------------
1   52   Cisco Catalyst 9500 Series Router           C9500-48Y4C      FDO26XXXXXY

Mod MAC addresses                    Hw   Fw           Sw                 Status
---+--------------------------------+----+------------+------------------+--------
1   xxxx.yyyy.D380 to xxxx.yyyy.D3B3 2.0  17.3.1r[FC2]  17.05.01           ok

Mod Redundancy Role     Operating Redundancy Mode Configured Redundancy Mode
---+-------------------+-------------------------+---------------------------
1   Standby             sso                       sso

Chassis 1 MAC address range: 160 addresses from xxxx.yyyy.d4c0 to xxxx.yyyy.d55f

Chassis 2 MAC address range: 160 addresses from xxxx.yyyy.d380 to xxxx.yyyy.d41f

this is more of SVL config, can you post

 

both the side :

 

show run interface port-channel  X ( x is the value using ?)

show interface x/x

show etherchannel X summary

show interface port-channel x switchport

show version

 

BB

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Reza Sharifi
Hall of Fame Master Hall of Fame Master
Hall of Fame Master
interface TwentyFiveGigE2/0/6
 switchport trunk allowed vlan 1-1000
 switchport mode trunk

C9200:
interface TenGigabitEthernet1/1/4
 switchport trunk allowed vlan 1-1000
 switchport mode trunk

 Can you make sure the 2/0/6 is operating as 10Gig and not 25?

HTH

fhk-cwempe
Beginner
Beginner

@balaji.bandi 

Like I said. I try to simplify the scenario and have not configured the port-channel anymore.

 

@Reza Sharifi 

The Ports operate at 10G.

 

C9500 Stack

(I changed the port and hardware chassis in case 2/0/6 was defect)

 

Port         Name               Status       Vlan       Duplex  Speed Type
Twe1/0/21                       connected    trunk        full    10G SFP-10GBase-SR

 

 

C9200

 

Port         Name               Status       Vlan       Duplex  Speed Type
Te1/1/4                         connected    trunk        full    10G SFP-10GBase-SR

 

 

It kinda works now!

I found some threads (3 years old) about compatibility issues with third-party modules

But they should be fixed with newer IOS versions.

 

I just tried two original Cisco 1G modules and it works.

 

I already configured

 

service unsupported-transceiver
no errdisable detect cause gbic-invalid

 

Maybe an upgrade to 17.6.3 helps...

 

Yeah, Cisco devices don't always work with 3rd party vendor optics. I use one 3rd part vendor's optics that works pretty much with all Cisco devices. So, it's a kind of trial and error process.

HTH

But they should be compatible according to this:

 

https://www.reddit.com/r/networking/comments/c8op1n/3rd_party_optics_cat_9500_highperformance/exvi2ik/?utm_source=reddit&utm_medium=web2x&context=3

(search for "11555/SFP-10GLR-31")

 

And the sales person asked me about my devices to verify they were compatible.

 

Maybe I have more luck tomorrow.

@Reza Sharifi  mention that not all SFP compatible and even worse cisco not support TAC for 3-rd party SFP. 
https://www.fiberlandtec.com/how-to-check-sfpmodule-optical-signal-strength.html

 

check this link see if the optical signal is strength is OK (this only one step to check SFP).

I understand, that is the reason i requeted interface output to see if the interface gone in error disable mode.

Thank you for the clarification.

 

BB

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Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend

@fhk-cwempe wrote:

Maybe an upgrade to 17.6.3 helps...


Use 17.3.5 instead. 

NOTE:  Currently suspended testing 17.6.3 because we have already found "0-config" bugs in two test switches.  

fhk-cwempe
Beginner
Beginner

After some troubleshooting tipps ("self loop test") from the sales person, I found out the issue was not between sfp module and C9500, but C9200.

 

It was this bug.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa11962

 

Update C9200 from 17.03.04b to 17.3.5 solved the issue!

Thanks alot friend for sharing solution.

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