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Community Member

VOIP and dhcp pool

We just upgraded the CallManager and new voips. I have noticed that we are running out of ip's. We setup a second pool, but are unable to register any phones on the new/different vlan (453). What am I missing?

     

      The config on NTP/DHCP server is as follows:

     

      Ip dhcp smart-relay

      No ip dhcp use vrf connected

      Ip dhcp excluded-address xxx.xx.253.129 xxx.xx.253.135

      Ip dhcp excluded-address xxx.xx.253.248 xxx.xx.253.254

      Ip dhcp excluded-address xxx.xx.253.65 xxx.xx.253.69 (new to config)

     

      Ip dhcp pool VOIP

      Network xxx.xx.253.128 xxx.xxx.xxx.128

      Next-server xxx.xx.253.131

      Default-router xxx.xx.253.130

      Option 150 ip xxx.xx.253.131

     

      Ip dhcp pool VOIP2 (new to config)

      Network xxx.xx.253.64 xxx.xxx.xxx.192 (new to config)

      Next-server xxx.xx.253.131 (new to config)

      Default-router xxx.xx.253.65 (new to config)

      Option 150 ip xxx.xx.253.131 (new to config)

6 REPLIES
Hall of Fame Super Blue

Re: VOIP and dhcp pool

Can you post the configuration of the VLAN managing the VOIP and VOIP2 subnet?

Community Member

Re: VOIP and dhcp pool

interface vlan253

ip add xxx.xxx.253.130 xxx.xxx.255.128

no ip redirects

no ip unreachables

interface vlan453

ip add xxx.xxx.253.65 xxx.xxx.255.192

no ip redirects

no ip unreachables

Hall of Fame Super Blue

VOIP and dhcp pool

Your pools don't have any lease time.

Can you post the output to the command "sh ip dhcp bind"?

Community Member

Re: VOIP and dhcp pool

sh ip dhcp bind on dhcp server x.x.253.132

Bindings from all pools not associated with VRF:

ips listed, mac address, lease times; all today the 19th or tomorrow the 20th, type; all automatic

x.x.253.136

.138

.140

.142

.143

.144

.146

.148

.149

.151-.157

.159-.166

.168-.188

.190

.193

.194

.196

.198

.199

.202-.204

.208

.213

.214-.216

.218

.219

.221-.231

.244

.249

.250

.251

.252

Hall of Fame Super Blue

Re: VOIP and dhcp pool

Ok.  Let's go back to basic.

How many phones do you have online?

Community Member

Re: VOIP and dhcp pool

115.

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