I have a DHCP configured on juniper router srx345 and an external DHCP runing on win machine and configured by telephony ppl.
I'm using an IP tel Astra i740N when I send DHCP request to DHCP server being run localy on srx345 the DHCP replies to back to 10.3.85.12 which is not existing or is not being handed yet.
{root@srx-rad% tcpdump -n -i reth0.2085
15:20:03.584348 In IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:08:5d:1d:67:e9, length 548
15:20:03.849730 Out IP truncated-ip - 247 bytes missing! 10.3.85.1.67 > 10.3.85.12.68: BOOTP/DHCP, Reply, length 269
15:21:22.687841 In IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:08:5d:1d:67:e9, length 548
15:21:22.688052 Out IP truncated-ip - 247 bytes missing! 10.3.85.1.67 > 10.3.85.12.68: BOOTP/DHCP, Reply, length 269
15:21:37.687720 In IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:08:5d:1d:67:e9, length 548
15:21:37.687840 Out IP truncated-ip - 247 bytes missing! 10.3.85.1.67 > 10.3.85.12.68: BOOTP/DHCP, Reply, length 26
}
{primary:node0}
rtomecek@srx-rad> show arp | match 10.3.85.
{primary:node0}
rtomecek@srx-rad> show dhcp server binding
DHCP POOL
{set routing-instances GLOBAL access address-assignment pool TEST_Wifi_v2084 family inet dhcp-attributes router 10.3.84.1
set routing-instances GLOBAL access address-assignment pool TEST_VOIP_v2085 family inet dhcp-attributes grace-period 86400
set routing-instances GLOBAL access address-assignment pool TEST_VOIP_v2085 family inet dhcp-attributes router 10.3.85.1
set routing-instances GLOBAL access address-assignment pool TEST_VOIP_v2085 family inet dhcp-attributes boot-file 10.0.20.3 }
When I connect other type of a phone, SIP phone in particular, everything works fine.
Also when I have Astra i740N configured to send the DHCP requests to other DHCP server run on win machine which is being configured for IP telephony, everything works.
So is there anything which needs to be further configured on the juniper srx for the IP telephony?