Cisco Bug: CSCun23612 - 7841 Cannot join VLAN if broadcast over 30kbps
Dec 13, 2019
- Cisco IP Phone 7800 Series
- Cisco IP Phone 7841
- Cisco IP Phone 7821
- Cisco IP Phone 7861
Known Affected Releases
Symptom: 7841 Devices are not able to process CDP response to gain VLAN knowledge from switch when large amount of broadcasts (30kbps / approx 40 to 60 pps) on VLAN/Subnet are occurring. The phone looks like it will still follow through with DHCP requests but will not accept the offered DHCP address due to the phone not knowing the VLAN structure. ** Issue does not occur when same amount of traffic is sent directly to the phone; only when it is broadcast traffic. Conditions: 7841 on a switch port with a VLAN with a large amount of broadcasts occurring in subnet.
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Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
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