01-04-2019 05:50 AM - edited 03-08-2019 04:56 PM
Hi
I have a strange problem with some IP Phones after I upgraded a 3650 switch to IOS version 16.6.4a.
I have 7 phones connected to port on the switch and after the upgrade the phones loses connectivity after a day or 2.
When the phones connect they get an IP in the Voice VLAN, but after some time they drop the connection to the PBX.
To me it seems like the phones move from the tagget voice vlan to the untagged data vlan on the switch but not completely.
Port config:
interface GigabitEthernet2/0/15 description <User/voice port> switchport access vlan 548 switchport mode access switchport voice vlan 549 switchport port-security maximum 2 switchport port-security aging time 10 switchport port-security spanning-tree portfast end
I can see the MAC of the phone on the data VLAN, but the IP is in the VOICE vlan scope, and it replies to a ping.
SW-1#show mac address-table | inc 0/15 548 0008.5d92.2fd8 STATIC Gi2/0/15 548 4439.c48d.332f STATIC Gi2/0/15 SW-1#show ip arp | inc 0008.5d92.2fd Internet 10.60.49.13 0 0008.5d92.2fda ARPA Vlan549 SW-1#ping 10.60.49.13 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.60.49.13, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms SW-1#show mac add SW-1#show mac address-table | inc 0008.5d92.2fd8 548 0008.5d92.2fd8 STATIC Gi2/0/15
This problem started a week after i upgraded the 3650 switch and we have had the setup for 2 years without problems before that.
Have anyone seen anything like this?
01-04-2019 06:09 AM
Hello,
try to default the port (default interface GigabitEthernet2/0/15), and then reapply the entire configuration...
01-04-2019 06:58 AM
01-04-2019 10:56 AM
01-04-2019 03:45 PM
01-05-2019 04:18 PM
01-05-2019 10:28 PM
@rasmus.elmholt wrote:
16.6.4a is the suggested version
16.6.5 was released on December 2018.
01-09-2019 04:13 AM
01-09-2019 09:59 PM
01-10-2019 05:31 AM
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