Re: VSS issue on 4500x

mickyq · ‎09-11-2017

I have a network where users are seing slow responce issues. I have stacks of 3750's connected to the 4500's using etherchannel. the logs show an issue with 3 of the vss ports.the logs belwo keep repeating
could this cause a slow responce issue.

version:

Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.04.04.SG

vss interfaces:

Te1/1/32 ** VSL Link 1 ** connected trunk full 10G 10GBase-LRM

Te1/2/8 ** VSL Link 2 ** connected trunk full 10G 10GBase-LRM

Te2/1/32 ** VSL Link 1 ** connected trunk full 10G 10GBase-LRM

Te2/2/8 ** VSL Link 2 ** connected trunk full 10G 10GBase-LRM

show switch cirtual:

Executing the command on VSS member switch role = VSS Active, id = 1

Switch mode : Virtual Switch
Virtual switch domain number : 1
Local switch number : 1
Local switch operational role: Virtual Switch Active
Peer switch number : 2
Peer switch operational role : Virtual Switch Standby

Executing the command on VSS member switch role = VSS Standby, id = 2

Switch mode : Virtual Switch
Virtual switch domain number : 1
Local switch number : 2
Local switch operational role: Virtual Switch Standby
Peer switch number : 1
Peer switch operational role : Virtual Switch Active

loggs
%SFF8472-5-THRESHOLD_VIOLATION: STANDBY:Te2/1/32: Rx power low warning; Operating value: -10.6 dBm, Threshold value: -8.4 dBm.
%SFF8472-5-THRESHOLD_VIOLATION: Te1/1/32: Rx power low warning; Operating value: -9.8 dBm, Threshold value: -8.4 dBm.
%SFF8472-5-THRESHOLD_VIOLATION: Te1/2/8: Rx power low warning; Operating value: -10.5 dBm, Threshold value: -8.4 dBm.

Reza Sharifi · ‎09-11-2017

The log error you are seeing is a cosmetic error that appears in many Cisco devices. This can't be related the slowness issue you are experiencing.

HTH

Leo Laohoo · ‎09-11-2017

Kindly post the complete output to the following commands:
1. sh interface Te 1/1/32;
2. sh interface Te 2/1/32; and
3. sh interface Te 1/2/8

mickyq · ‎09-12-2017

Hi Leo

thanks for taking a look at this problem.

TenGigabitEthernet1/1/32 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is f40f.1bcf.831f (bia f40f.1bcf.831f)
Description: ** VSL Link 1 **
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 10GBase-LRM
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 6418000 bits/sec, 1158 packets/sec
5 minute output rate 1871000 bits/sec, 1311 packets/sec
30992137161 packets input, 14933298361634 bytes, 0 no buffer
Received 292011908 broadcasts (222955037 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
53346898168 packets output, 20952982374725 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

TenGigabitEthernet2/1/32 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is f40f.1bcf.82df (bia f40f.1bcf.82df)
Description: ** VSL Link 1 **
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 10GBase-LRM
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 4
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 1875000 bits/sec, 1317 packets/sec
5 minute output rate 6367000 bits/sec, 1155 packets/sec
53346901512 packets input, 20952982879123 bytes, 0 no buffer
Received 56407309 broadcasts (56407309 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
30992139350 packets output, 14933299406396 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

TenGigabitEthernet1/2/8 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet Port, address is 4c4e.358d.4977 (bia 4c4e.358d.4977)
Description: ** VSL Link 2 **
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 10GBase-LRM
input flow-control is on, output flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: Class-based queueing
Output queue: 0/40 (size/max)
5 minute input rate 14618000 bits/sec, 4721 packets/sec
5 minute output rate 4826000 bits/sec, 1483 packets/sec
35581753959 packets input, 19624262127238 bytes, 0 no buffer
Received 359874644 broadcasts (220036908 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
49174190171 packets output, 15259894872431 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

interface config:

interface TenGigabitEthernet1/1/32
description ** VSL Link 1 **
switchport mode trunk
switchport nonegotiate
no lldp transmit
no lldp receive
no cdp enable
channel-group 64 mode on
service-policy output VSL-Queuing-Policy

interface TenGigabitEthernet2/1/32
description ** VSL Link 1 **
switchport mode trunk
switchport nonegotiate
no lldp transmit
no lldp receive
no cdp enable
channel-group 63 mode on
service-policy output VSL-Queuing-Policy

interface TenGigabitEthernet1/2/8
description ** VSL Link 2 **
switchport mode trunk
switchport nonegotiate
no lldp transmit
no lldp receive
no cdp enable
channel-group 64 mode on
service-policy output VSL-Queuing-Policy

interface TenGigabitEthernet2/2/8
description ** VSL Link 2 **
switchport mode trunk
switchport nonegotiate
no lldp transmit
no lldp receive
no cdp enable
channel-group 63 mode on
service-policy output VSL-Queuing-Policy

Leo Laohoo · ‎09-12-2017

I don't see anything wrong with the output. The fibre optic links seems to be OK.