01-18-2014 12:55 PM - edited 03-07-2019 05:39 PM
Hi,
I have a IBM Blade chassis connected to my DMZ switch (Cisco 3560) in trunk mode.
Cisco Swith G0/17 ------- IBM Switch EXT 7
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
The configuration of Cisco switch is as follows.
interface GigabitEthernet0/17
description NEWIBM-BLADE
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2-4094
switchport mode trunk
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
IBM Switch Configuration is as follows
/c/l2/vlan 41/privlan
type community
ena
map 100
/c/l2/vlan 100
ena
name "VLAN 100"
def EXT7
/c/l2/vlan 100/privlan
type primary
ena /c/l2/vlan 41/privlan
type community
ena
map 100
/c/l2/vlan 100
ena
name "VLAN 100"
def EXT7
/c/l2/vlan 100/privlan
type primary
ena
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
/c/l2/trunk 1
ena
add EXT7 /c/l2/trunk 1
ena
add EXT7
Switch details
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
1 28 WS-C3560G-24TS 12.2(35)SE5 C3560-IPBASE-M
My issue is I have an Guest OS running windows 2008 Server R2 in Blade/Server 5 of IBM Chasis and the Vlan 100 is tagged on Exsi level. Vlan 100 is my DMZ vlan. I can see the arp entries in the Cisco switch but communication is not happening. Am trying to ping from 10.11.30.154 to 10.11.30 254 (gateway)
sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.11.30.154 10 0050.56bb.33f2 ARPA Vlan100
I am having the same setup in another IBM Chasis which is working fine. The only difference is vlan 1 is also allowed in trunk . (G0/20 is connected to working IBM server)
Please help me in isolating the issue.
Thanks
01-18-2014 01:07 PM
Hi,
Under interface gi0/17, can you delete this command and test again?
You really don't need this command as you are allowing all vlans under this interface anyway.
switchport trunk allowed vlan 2-4094
HTH
01-18-2014 01:11 PM
Dear Reza
As I mentioned there is another Blade connected on G0/20 in trunk mode. So once I remove the
"switchport trunk allowed vlan 2-4094" command I am getting an VLAN 1 flapping between g0/17 and g0/20.
All the servers in that Blade is working fine.
Thanks
01-19-2014 09:26 AM
Hi,
The issue is solved ... Enabled PVID tagging on IBM Switch
Thanks
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