I recently started upgrading our small business line to image 188.8.131.52. This includes an SG300-20 and five SG300-28P 's. The first thing I noticed is that the switch applies port power well before the switch has finished booting and is forwarding frames. Image 184.108.40.206 was perfect and waited to add power once the switch was operational on all ports. Definitely not the end of the world and possibly not a bug at all; our IP phones eventually time out and retry and the switch is then operational.
The second thing is that in layer 3 mode, setting a static IP on the managment VLAN address does correctly add 'no ip address dhcp' to the config file, but NOT the IP address and subnet mask. This must be entered manually from the CLI. I did a copy run start and rebooted a switch, and was left locked out with no choice but to use the console to add the missing information. This happened on two separate 28P 's.
On the second switch that had the missing ip address in VLAN 1 (but did indeed have the no ip address dhcp entry), only the first bank of ports had PoE. Removing and restoring AC power brought PoE back to all ports. Out of all strange behaviors, this one worried me the most.
The third problem I noticed was that LLDP no longer gave our Mitel 5330 IP phones VLAN information. Despite rebooting to defaults, resets, etc... Rolled back to image 220.127.116.11 and it suddenly worked again. I have since decided to use DHCP to provide that information to the phones, and turned off auto smartport as I don't like blinking Save all the time, and endless macros to scroll through in the config file. No matter what image you use, LLDP doesn't provide VLAN info on initial switch boot, after a power inline never / auto, and sometimes even after and port shutdown and power inline never/auto. The only way to get it for sure is to unplug and re-plug the phone. This was why I switched to DHCP for that task.
Dismissing these originally as upgrade config incompatibilities, I rebooted to factory defaults and reprogrammed manually. All these problems persisted. I'm currently running half equipment the new image 18.104.22.168 and half 22.214.171.124. It seems currently image 126.96.36.199. is the best image to use as it is stable and also does not have the MAC table port flooding bug that 188.8.131.52 and below had. 184.108.40.206 does have some nice new features, but I'm too scared to deploy it to switches over 10 miles away from the office.
Hello Brayton, I have spent a few minutes labbing the information provided. To summarize what you're saying;
1.) On the UI if you delete the DHCP interface for VLAN 1 or use the command string, the IP information / subnet mask does not display correctly. I have performed the following steps;
set system mode router (layer 3)
switche56e94# configure terminal
switche56e94(config)# interface vlan 1
switche56e94(config-if)#no ip address dhcp
switche56e94(config)#do show run int vlan 1
interface vlan 1
no ip address dhcp
switche56e94(config)#do show ip interface
192.168.1.254/24 vlan 1 static disable no Valid
I have tested this both on the 220.127.116.11 and the 18.104.22.168. The IP address and subnet mask does not show on the show run interface vlan 1. However, if you specifically assigned the VLAN interface the IP address, it does show.
On the GUI, the only IP interface that will show will be the 192.168.1.254 255.255.255.0 static. At no point did I lose access to the switch however.
2.) I have not experienced any POE issues modifying IP address or VLAN information. A few things you can do to see what is going on.
show power inline fastethernet xx - This will show if you have an absent counter or an invalid signature etc. If you have an invalid signature the port would go to a shut down state and would require a power inline never/auto command or renegotiation of the port for the POE.
3.) The LLDP MED is no longer feeding VLAN information to your Mitel phone on the initial switch boot.
To prepare the switch I have performed the following;
no cdp run
no cdp appliance-tlv enable
voice vlan state disabled
no lldp med network-policy voice auto
lldp med network-policy 1 voice vlan 100 vlan-type tagged up 6 dscp 46
I have connected a SPA509G telephone running 7.5.1 firmware. The phone correctly picked up the voice vlan 100. After rebooting the switch, it continued to work as expected. I did not have to power cycle the phone, shut down a port or suspend the POE.
If you feel you're having some issues with the switch, please call the SBSC support center at 1.866.606.1866 and please ensure you have your CCOID and serial number of the switch. When you speak to the agent, please provide this community forum post.
Please mark answered for helpful posts
Thank you for reporting these issues on the 22.214.171.124 firmware. In order to better assist you and isolate the root cause, can you please reach out to our SBSC team and open a Service Request? Also, if possible, could you please provide the following details for us to analyze and determine the root cause?
For PoE issue,
How many POE devices (and what types) were connected to device before reload?
Does issue happen every time device has a soft reset (reset via command not via power cable). Or did it happen only once?
Did you see this only on one specific SKU or on all switch models?
Show power inline when issue occurs.
For LLDP issue,
LLDP Packet capture with working version (126.96.36.199) and current version (188.8.131.52) – to compare behavior.
Show LLDP and show LLDP neighbors for both versions when issue occurs.
Can you please elaborate on your comment "No matter what image you use, LLDP doesn't provide VLAN info on initial switch boot, after a power inline never / auto, and sometimes even after and port shutdown and power inline never/auto"
Thanks Thomas and Nagaraja for writing. In response to Thomas' question about the VLAN1 address, I went to the IPv4 interface in the GUI, clicked on edit, and moved the radio button to Static and hit Apply. I would then move to the CLI and show run, and under interface vlan1 there would be 'no ip address dhcp' but the ip address and subet mask that was previously assiged by DHCP was not written in the config. So when I would copy run start and reboot at that point the switch would come back with a blinking power light and no way to access the switch accept via the RS232 port. I did so and added ip address 10.10.102.2 255.255.255.0 to the VLAN interface and all was well after that. I had to do this on three SG300-28P's.
In response to Nagaraja: 7 Mitel 5330 IP phones, class 3 at about 4300 mW peak power usage per phone. This issue happened only once after upgrading to 184.108.40.206 and only one switch, SKU
The LLDP issue is not a factor any longer as I am now using a DHCP server to provide the VLAN info and DSCP value, but what I mean by my comment was that the Mitel 5330 would ONLY pick up the VLAN and DSCP value if I plugged the phone in when the switch was fully booted. But it NEVER would if I would reboot the switch, unplug the switch, disable and re-enable power, or shutdown and no shutdown a port. But unplug the phone and plug it in, it would discover it every time. Since switching to DHCP this issue has gone away completely.
I'm running 220.127.116.11 on all switches now and haven't had any serious troubles. I decided that if it works fine, not to mess with things and upset the balance of life.
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