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тАО04-24-2008 12:14 AM
тАО04-24-2008 12:14 AM
c3000 + BL460c + Cisco 3020 DHCP issue
Hi,
I have a c3000 enclosure full with BL460c half height blade servers inside. I have 2 x Cisco 3020 switches inside the enclosure. I connected my Cisco blade 3020 switch to our core switch. I can ping the core switch and every device in LAN if I hyper-terminal to cisco 3020 switch but my blades are not gettting an IP address from DHCP.
Can you please help me how I can troubleshoot this further?
Thank you,
I have a c3000 enclosure full with BL460c half height blade servers inside. I have 2 x Cisco 3020 switches inside the enclosure. I connected my Cisco blade 3020 switch to our core switch. I can ping the core switch and every device in LAN if I hyper-terminal to cisco 3020 switch but my blades are not gettting an IP address from DHCP.
Can you please help me how I can troubleshoot this further?
Thank you,
3 REPLIES 3
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тАО04-24-2008 04:36 AM
тАО04-24-2008 04:36 AM
Re: c3000 + BL460c + Cisco 3020 DHCP issue
By default, the Cisco 3020 mgmt IP address is on Fast Ethernet 0 (fa0) which does not use the 3020 uplinks but instead is routed through the OA/ILO port. This is probably why you can ping to and from the 3020.
Sounds like you might need to troubleshoot the uplink to your core a bit more. Check to see if you have link. Check to see if you are plugging in to the right VLAN, etc.
Is it a fiber connection? FYI...There are some known issues with 3020s connecting to Cat 6500s via Fiber on early versions of Cisco 3020 IOS.
Sounds like you might need to troubleshoot the uplink to your core a bit more. Check to see if you have link. Check to see if you are plugging in to the right VLAN, etc.
Is it a fiber connection? FYI...There are some known issues with 3020s connecting to Cat 6500s via Fiber on early versions of Cisco 3020 IOS.
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тАО04-25-2008 04:28 AM
тАО04-25-2008 04:28 AM
Re: c3000 + BL460c + Cisco 3020 DHCP issue
You were right, I took the ILO cable out and now cannot ping the core switch anymore. I am not using fiber, it is copper(RJ45). I use the uplink ethernet gigabit ethernet 0/17.
IOS on Cisco 3020 is Version 12.2(37)SE1
I do not think there is an issue with VLAN because I do not get any VLAN mismatch errors on both switches.
Cisco 3020
switchport trunk encapsulation dot1q
switchport trunk native vlan 35
switchport mode trunk
spanning-tree portfast
Cisco Core Switch
switchport trunk encapsulation dot1q
switchport trunk native vlan 35
switchport mode trunk
switchport voice vlan 40
no mdix auto
spanning-tree portfast
Probably I am missing something, any suggestions?
Thx
IOS on Cisco 3020 is Version 12.2(37)SE1
I do not think there is an issue with VLAN because I do not get any VLAN mismatch errors on both switches.
Cisco 3020
switchport trunk encapsulation dot1q
switchport trunk native vlan 35
switchport mode trunk
spanning-tree portfast
Cisco Core Switch
switchport trunk encapsulation dot1q
switchport trunk native vlan 35
switchport mode trunk
switchport voice vlan 40
no mdix auto
spanning-tree portfast
Probably I am missing something, any suggestions?
Thx
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тАО05-02-2008 03:06 AM
тАО05-02-2008 03:06 AM
Re: c3000 + BL460c + Cisco 3020 DHCP issue
Now, I have connection between Cisco 3020 switch and my core switch even OA ILO cable is unplugged which is good. But my blade servers still cannot get IP address or if I try to staticly assign, no luck.
- Do I need to install anything on the servers so they will get an IP?
- Port mapping is automatically done so I do not think, I need to map anything.
- Can the issue be with FULL-Dupluex / 1000mb?
- I believe connectivity between switches are OK as I can ping core switch from Blade 3020 switch and can ping Blade Switch the Core Switch. no VLAN-mismatch or anything.
- Any HP Pack/Suite required to install to join my blade servers to LAN?
Thank you,
- Do I need to install anything on the servers so they will get an IP?
- Port mapping is automatically done so I do not think, I need to map anything.
- Can the issue be with FULL-Dupluex / 1000mb?
- I believe connectivity between switches are OK as I can ping core switch from Blade 3020 switch and can ping Blade Switch the Core Switch. no VLAN-mismatch or anything.
- Any HP Pack/Suite required to install to join my blade servers to LAN?
Thank you,
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