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Losing connection to devices on VLAN 60 after 4 hours when using a PowerConnect 6248
Hi, strange occurrence, the setup is as follows:
Router Cisco 1841 (VLAN's1, 60) -> Riverbed (InPath and Primary interfaces) -> PC6248 -> Ports 47/48 (VLAN's 1 and 60) - > Nortel 325-24T->Server (dual connection. VLAN's 1 and 60) to the Nortel.
VLAN 60 is 192.168.192.161/29, VLAN 1 is 10.5.5.0/24
Now for approximately 4 hours we can connect to all the device in VLAN 60, but after that point they become invisible. To make matters worst if we put the aging Cisco back everything starts working. Attached are the configurations for both switches, I am hoping some one can tell me what is actually happening and a way fix this.
VLAN 1 always works, on the PC6248/Cisco, there are PC's and a File/print serverall on VLAN 1. The server that is dual connected is a windows server running Call Pilot.
All routing is done at the router (Cisco 1841), the network spans the country
Dell PowerConnect 6248 Config:
!Current Configuration:
!System Description "PowerConnect 6248, 3.3.1.10, VxWorks 6.5"
!System Software Version 3.3.3.3
!Cut-through mode is configured as disabled
!
configure
vlan database
vlan 60
exit
hostname "SWITCH1"
sntp unicast client enable
sntp client poll timer 1024
sntp server 10.1.1.2
stack
member 1 2
exit
ip address 10.5.5.3 255.255.255.0
ip default-gateway 10.5.5.1
no logging console
logging file debug
logging buffered debug
interface vlan 50
name "Voice_1"
exit
interface vlan 60
name "Voice_2"
exit
username "xxxxxxx" password xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx level 15 encrypted
spanning-tree priority 4096
!
interface ethernet 1/g1
negotiation 10h 10f 100h 100f 1000f
description 'InPath-Riverbed'
spanning-tree disable
switchport mode general
switchport general allowed vlan add 60
exit
!
interface ethernet 1/g2
negotiation 10h 10f 100h 100f 1000f
description 'Primary-Riverbed'
exit
!
interface ethernet 1/g3
description 'Dell_PowerEdge1'
exit
!
interface ethernet 1/g4
description 'Dell_PowerEdge2'
exit
!
interface ethernet 1/g5
description 'Dell_PowerEdgeiDRAC'
exit
!
interface ethernet 1/g47
description 'Uplink2PBX'
switchport mode trunk
switchport trunk allowed vlan add 1,60
exit
!
interface ethernet 1/g48
description 'Uplink2Switch-another floor'
switchport mode trunk
switchport trunk allowed vlan add 160
exit
!
interface ethernet 1/xg1
shutdown
exit
!
interface ethernet 1/xg2
shutdown
exit
!
interface ethernet 1/xg3
shutdown
exit
!
interface ethernet 1/xg4
shutdown
exit
snmp-server community xxxxxxx ro
exit
Cisco Config (always works):
Current configuration : 3847 bytes
!
! No configuration change since last restart
!
version 12.2
no service pad
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
!
hostname SWITCH1
!
boot-start-marker
boot-end-marker
!
logging buffered 40960
enable secret 5
!
username fujitsu privilege 15 secret 5
username kbwalkeradm privilege 15 secret 5
aaa new-model
!
!
aaa authentication login default local
aaa authorization console
aaa authorization exec default local
!
!
!
aaa session-id common
system mtu routing 1500
ip subnet-zero
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface FastEthernet0/1
description UPLINK2RB and router
switchport trunk allowed vlan 1,60
switchport mode trunk
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface FastEthernet0/25
!
interface FastEthernet0/26
!
interface FastEthernet0/27
!
interface FastEthernet0/28
!
interface FastEthernet0/29
!
interface FastEthernet0/30
!
interface FastEthernet0/31
!
interface FastEthernet0/32
!
interface FastEthernet0/33
!
interface FastEthernet0/34
!
interface FastEthernet0/35
!
interface FastEthernet0/36
!
interface FastEthernet0/37
!
interface FastEthernet0/38
!
interface FastEthernet0/39
!
interface FastEthernet0/40
!
interface FastEthernet0/41
!
interface FastEthernet0/42
!
interface FastEthernet0/43
!
interface FastEthernet0/44
!
interface FastEthernet0/45
!
interface FastEthernet0/46
!
interface FastEthernet0/47
!
interface FastEthernet0/48
description UPLINK to Teleco Management Switch DOCTG1-S1
switchport trunk native vlan 60
switchport trunk allowed vlan 1,60
switchport mode trunk
no cdp enable
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface Vlan1
ip address 10.5.5.3 255.255.255.0
no ip route-cache
!
ip default-gateway 10.5.5.1
no ip http server
!
!
control-plane
!
!
line con 0
exec-timeout 0 0
line vty 0 4
access-class mgmt_in in
line vty 5 15
access-class mgmt_in in
!
ntp clock-period 36028204
ntp server 10.4.1.24 prefer
end
cardinal01
3 Posts
1
April 30th, 2012 17:00
Ok...what need to change was the following:
nterface ethernet 1/g1
negotiation 10h 10f 100h 100f 1000f
description 'InPath-Riverbed'
spanning-tree disable
switchport mode general
switchport general allowed vlan add 60 tagged
and
interface ethernet 1/g47
description 'Uplink2PBX'
switchport mode general
switchport general allowed vlan add 1,60 tagged
Anonymous
5 Practitioner
5 Practitioner
•
274.2K Posts
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April 23rd, 2012 06:00
One of the first thing I like to do is always ensure both images are current. And is the 6248 in a stack? If it is we need to make sure both have the same firmware.
www.dell.com/.../DriverFileFormats
On interface 1/g1, this is set to general and mode and is a connection to the Riverbed. On the Cisco this same connection is set to Trunk mode. I am not real familiar with this product, but I would double check and ensure general mode is what we want here and not maybe Trunk mode.
On interface 1/g48 the switchport mode is allowing VLAN 160, instead of 1,60. This very well could have been messed up during the copy paste, but may want to double check it.
That is all I see, right now. If none of the above changes anything, let us know and we can continue looking over things.
Thanks.
cardinal01
3 Posts
0
April 27th, 2012 17:00
I sanitized the config file before uploading, so the VLAN 160 is just a typo actually VLAN 1, 60. We have tried the following:
1. Using switchport mode general
2. Using switchport mode trunk
3. Enabled IP routing (this sort of worked)
The 6248 need to be at layer 2, the ip routing worked only in one direction e.g. to the right, so the switch ping see across VLAN60 toward the Nortel, but not back the other way. What I can tell you is:
From the 6248, (layer 2) we see the following:
All other PBX installation across the the WAN going via the Riverbed and Cisco 1841 using VLAN60
All other devices on VLAN1(local and across WAN) and the Voice Mail server in the local LAN
When we replace the 6248 at a site and use the old Cisco it instantly starts working
This has got us stumped, and not sure where to go next, the network is fairly large (spans the country)
The problem is all these switch need to be consistent across the network, I can not change the ends that are not managed by me (Nortel and Cisco 1841)
sydney23
6 Posts
0
April 28th, 2012 05:00
if possible
reload the switch and test how long the vlan works for and dont enable routing on that vlan again. reload will start the process again to forward the traffic do it once and see how long it goes for.
Anonymous
5 Practitioner
5 Practitioner
•
274.2K Posts
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May 1st, 2012 06:00
Great information to have, thanks for sharing. Good to hear you got things working, good job.