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01-30-2013 02:03 PM
01-30-2013 02:03 PM
VLAN goes unavailable once or twice a day
Hey Folks,
I have a 2848 (J4904A) with 10.77 (yes, I see that 10.101 has just been released, on my to-do list).
It has three vlans:
VLAN 1 - 10.2.10.208 / 255.255.254.0
VLAN 34 - 10.2.34.48 / 255.255.254.0
VLAN 36 - No IP Address
Uplink is on ports 46, 47, 48 (all fiber). It is called TRK1
Each day VLAN1 becomes unreachable for about 5 to 10 minutes. Yet, VLAN 34, which is on the same physical uplink (3 fibers to the CORE switch, a 5406zl) does not go offline.
I have done the following (results of each command follow):
> show vlan 1
Status and Counters - VLAN Information - Ports - VLAN 1
802.1Q VLAN ID : 1
Name : DEFAULT_VLAN
Status : Port-based Voice : No
Jumbo : No
.
Trk1 Untagged Learn Up
=====================================
show spann
Rapid Spanning Tree (RSTP) Information
STP Enabled : Yes
Force Version : RSTP-operation
Switch Priority : 32768 Hello Time : 2
Max Age : 20 Forward Delay : 0
Topology Change Count : 3475
Time Since Last Change : 5 days
Root MAC Address : 000195-0aed5b
Root Path Cost : 40000
Root Port : Trk1
Root Priority : 32768
Root Guard Ports :
TCN Guard Ports :
BPDU Protected Ports :
BPDU Filtered Ports :
Port Type Cost Priority State | Designated Bridge
----- --------- --------- -------- ---------- + -----------------
Trk1 20000 64 Forwarding | 0017a4-844300
=============================
show lacp
LACP
PORT LACP TRUNK PORT LACP LACP
NUMB ENABLED GROUP STATUS PARTNER STATUS
---- ------- ------- ------- ------- -------
45 Passive 45 Up No Success
46 Active Trk1 Up Yes Success
47 Active Trk1 Up Yes Success
48 Active Trk1 Up Yes Success
========================================================
FYI the time that this occurred would be around the time you see below for the login, which is about 9 hours after the broadcast issue below.
show log -r
---- Reverse event Log listing: Events Since Boot ----
I 01/30/13 15:06:05 mgr: SME SSH from 10.2.34.157 - MANAGER Mode
W 01/30/13 06:49:51 FFI: port 8-Excessive Broadcasts. See help.
I 01/30/13 06:49:31 ports: port 8 is now on-line
I 01/30/13 06:49:31 ports: port 8 is Blocked by STP
I 01/30/13 06:49:27 ports: port 8 is now off-line
I 01/30/13 06:48:29 ports: port 8 is now on-line
I 01/30/13 06:48:29 ports: port 8 is Blocked by STP
I 01/30/13 06:48:27 ports: port 8 is now off-line
W 01/30/13 06:33:40 FFI: port 8-Excessive Broadcasts. See help.
I 01/30/13 06:33:18 ports: port 8 is now on-line
I 01/30/13 06:33:18 ports: port 8 is Blocked by STP
I 01/30/13 06:33:14 ports: port 8 is now off-line
I 01/30/13 06:26:00 ports: port 8 is now on-line
I 01/30/13 06:26:00 ports: port 8 is Blocked by STP
I 01/30/13 06:25:58 ports: port 8 is now off-line
I 01/30/13 06:10:49 ports: port 8 is now on-line
I 01/30/13 06:10:49 ports: port 8 is Blocked by STP
I 01/30/13 06:10:44 ports: port 8 is now off-line
I 01/30/13 06:03:30 ports: port 8 is now on-line
I 01/30/13 06:03:30 ports: port 8 is Blocked by STP
I 01/30/13 06:03:28 ports: port 8 is now off-line
W 01/30/13 05:48:36 FFI: port 8-Excessive Broadcasts. See help.
=========================
Show Run
; J4904A Configuration Editor; Created on release #I.10.77
hostname "IDF8-SW1"
snmp-server location "warehouse offices"
mac-age-time 1800
time timezone -360
time daylight-time-rule Continental-US-and-Canada
cdp run
no web-management
web-management ssl
no telnet-server
interface 1-48 <--- Summarized BTW
no lacp
exit
trunk 46-48 Trk1 LACP
sntp server 10.2.34.10
timesync sntp
sntp unicast
snmp-server community "public" Operator Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged 1-45,Trk1
ip address 10.2.10.208 255.255.254.0
exit
vlan 34
name "data"
ip address 10.2.34.48 255.255.254.0
tagged 45,Trk1
exit
vlan 36
name "voice1"
tagged 45,Trk1
exit
fault-finder bad-driver sensitivity high
fault-finder bad-transceiver sensitivity high
fault-finder bad-cable sensitivity high
fault-finder too-long-cable sensitivity high
fault-finder over-bandwidth sensitivity high
fault-finder broadcast-storm sensitivity high
fault-finder loss-of-link sensitivity high
ip route 0.0.0.0 0.0.0.0 10.2.11.254
no stack auto-join
spanning-tree
spanning-tree Trk1 priority 4
All of the information from the Core router produces about the same worthless dribble. Nothing pointing to any issues.
Ideas?
Thanks,
Hunter
- Tags:
- VLAN