Some Cisco IP phones are not getting registered if I down the Core - 1
I am working in Private IT company. The facility is having 4000 users and it is a high resliency site having two core switches and nearly 40 access switches. All core and access switches are 4506E switches and odd vlan is taking core-1 and even vlan is core-2. We are having cisco ip phones 6921 connected as daisy chain.( Phone is connected to access switch and the desktop is connected to ip phones). The Ip phone are getting registered cisco call maneger server. The call manager one leg is connected to one core switch and another one is core 2 same like my DHCP server.
For all vlans the the default gateway is my firwall. The voice needs to hit the call manager, hence we have implemented a source routing to call manager for the voice vlans.
Herer the problem is once we down the Core-1 some of the IP phones are not getting registered no matterit is on odd or even vlan. The same issue for Core-2. We suspect that there might be some issue in the DHCP server for voice vlan routing. But server team is saying that there is no issue with the DHCP server.
Now network is vulnerable that if any core switch is down my voice ip phones will be down.
Listen: https://smarturl.it/CCRS9E25 Follow us: twitter.com/ciscochampions
With applications and users everywhere, the networks are now, more than ever, being tasked with delivering consistent protection while providing an exceptional user exper...
Listen: https://smarturl.it/CCRS9E24 Follow us: https://twitter.com/CiscoChampion
Cisco Radio Aware Routing addresses several of the challenges faced when merging IP routing and radio communications in mobile networks, especially those exhibiti...
Listen: https://smarturl.it/CCRS9E23 Follow us: https://twitter.com/CiscoChampion The Wi-Fi 6E Catalyst 9136 access point takes advantage of the 6-GHz band to produce a network that is more reliable and secure, with higher throughput, more ...
When moving from OSPFv2 to OSPFv3, there are many changes in the format of the LSAs Type, but the most known changes are: IP prefix informations are no longer carried in Type-1 LSA and Type-2 LSA, new LSAs Type 8 and 9 are added to carry these prefixes.