BACKGROUND INFO:
Phone: SoundPoint 321
UCS Ver: 4.0.11
Native Vlan: 1 (192.168.0.0/24) ifname=eth2
Voice Vlan: 5 (192.168.5.0/24) ifname=eth2.5
isc DHCP server on both subnets
option 128 defined as VLAN-A=5; per UCS Admin guide
LLDP and CDP are DISABLED
ISSUE:
Upon reboot, the phone performs a DHCPDISCOVER via if eth2 and is assigned an address on Vlan 1 (192.168.0.88) and receives a valid DVD string (VLAN-A=5) via option 128. The phone correctly sets the vlan id to 5. It then releases the Vlan 1 address and performs a DHCPDISCOVER via if eth2.5. For some unknown reason it simultaniously perrforms a DHCPDISCOVER via if eth2 (again). The phone recieve DHCPOFFERS from the DHCP server on both subnets within seconds of each other although the offer from the Vlan1 subnet occurs before that from Vlan5. Some weirdness follows in which it appears that the phone attempts a DHCPREQUEST for 192.168.0.88 on the 192.168.5.0 subnet which, of course, the server denies (DHCPNAK). At that point it appears that the phone rolls back to Vlan1 and requests and receives a lease for 192.168.0.88.
QUESTION:
What is wrong with this phone?
RELEVANT LOG SNIPS, ETC:
DHCP LOG LINES:
Dec 19 23:30:07 masada dhcpd: DHCPDISCOVER from 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:08 masada dhcpd: DHCPOFFER on 192.168.0.88 to 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:09 masada dhcpd: DHCPREQUEST for 192.168.0.88 (192.168.0.247) from 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:09 masada dhcpd: DHCPACK on 192.168.0.88 to 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:10 masada dhcpd: DHCPRELEASE of 192.168.0.88 from 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 (found) Dec 19 23:30:14 masada dhcpd: DHCPDISCOVER from 00:04:f2:a6:7b:0c via eth2.5 Dec 19 23:30:14 masada dhcpd: DHCPDISCOVER from 00:04:f2:a6:7b:0c via eth2 Dec 19 23:30:14 masada dhcpd: DHCPOFFER on 192.168.0.88 to 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:15 masada dhcpd: DHCPOFFER on 192.168.5.51 to 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2.5 Dec 19 23:30:15 masada dhcpd: DHCPREQUEST for 192.168.0.88 (192.168.0.247) from 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2.5: wrong network. Dec 19 23:30:15 masada dhcpd: DHCPNAK on 192.168.0.88 to 00:04:f2:a6:7b:0c via eth2.5 Dec 19 23:30:15 masada dhcpd: DHCPREQUEST for 192.168.0.88 (192.168.0.247) from 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2 Dec 19 23:30:15 masada dhcpd: DHCPACK on 192.168.0.88 to 00:04:f2:a6:7b:0c (Polycom_0004f2a67b0c) via eth2
TCPDUMP ON IF eth2.5 (Vlan5):
root@masada:/etc/dhcp tcpdump -vvvv -i eth2.5 ether host 00:04:f2:a6:7b:0c
tcpdump: listening on eth2.5, link-type EN10MB (Ethernet), capture size 65535 bytes
23:30:14.110492 IP (tos 0x0, ttl 32, id 56697, offset 0, flags [DF], proto UDP (17), length 555)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:04:f2:a6:7b:0c (oui Unknown), length 527, xid 0x9249903d, Flags [none] (0x0000)
Client-Ethernet-Address 00:04:f2:a6:7b:0c (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
MSZ Option 57, length 2: 1492
Parameter-Request Option 55, length 11:
Subnet-Mask, BR, Option 160, TFTP
Default-Gateway, Time-Server, NTP, Time-Zone
Domain-Name-Server, Domain-Name, LOG
Hostname Option 12, length 20: "Polycom_0004f2a67b0c"
Vendor-Class Option 60, length 120: "^@^@6=s^A^GPolycom^B^USoundPointIP-SPIP_321^C^P2345-12360-001,1^D^_SIP/4.0.11.0583/21-Jun-16 17:15^E^^UP/5.0.11.0282/08-Jun-16 19:39"
T125 Option 125, length 120: 13885,1929447248,1869379939,1869414933,1399813486,1682993001,1853114704,760434761,1348416306,822284338,859059501,825373494,808267824,824979716,525551952,791948848,774975790,808794163,791818541,1249209901,825630769,926560565,85874000,792014384,774975790,808597554,791689261,1249209901,825630769,960115513
END Option 255, length 0
23:30:15.111297 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 329)
192.168.5.254.bootps > 192.168.5.51.bootpc: [udp sum ok] BOOTP/DHCP, Reply, length 301, xid 0x9249903d, Flags [none] (0x0000)
Your-IP 192.168.5.51
Server-IP 192.168.5.254
Client-Ethernet-Address 00:04:f2:a6:7b:0c (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 192.168.5.254
Lease-Time Option 51, length 4: 86400
Subnet-Mask Option 1, length 4: 255.255.255.0
BR Option 28, length 4: 192.168.5.254
TFTP Option 66, length 19: "tftp://192.168.5.1/"
Default-Gateway Option 3, length 4: 192.168.5.254
NTP Option 42, length 4: 192.168.5.1
END Option 255, length 0
23:30:15.111344 IP (tos 0x0, ttl 32, id 56702, offset 0, flags [DF], proto UDP (17), length 567)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:04:f2:a6:7b:0c (oui Unknown), length 539, xid 0x9249903d, Flags [none] (0x0000)
Client-Ethernet-Address 00:04:f2:a6:7b:0c (oui Unknown)
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Requested-IP Option 50, length 4: 192.168.0.88
Server-ID Option 54, length 4: masada
MSZ Option 57, length 2: 1492
Parameter-Request Option 55, length 11:
Subnet-Mask, BR, Option 160, TFTP
Default-Gateway, Time-Server, NTP, Time-Zone
Domain-Name-Server, Domain-Name, LOG
Hostname Option 12, length 20: "Polycom_0004f2a67b0c"
Vendor-Class Option 60, length 120: "^@^@6=s^A^GPolycom^B^USoundPointIP-SPIP_321^C^P2345-12360-001,1^D^_SIP/4.0.11.0583/21-Jun-16 17:15^E^^UP/5.0.11.0282/08-Jun-16 19:39"
T125 Option 125, length 120: 13885,1929447248,1869379939,1869414933,1399813486,1682993001,1853114704,760434761,1348416306,822284338,859059501,825373494,808267824,824979716,525551952,791948848,774975790,808794163,791818541,1249209901,825630769,926560565,85874000,792014384,774975790,808597554,791689261,1249209901,825630769,960115513
END Option 255, length 0
23:30:15.151171 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.0.88 tell 0.0.0.0, length 46
23:30:15.654544 ARP, Ethernet (len 6), IPv4 (len 4), Reply 192.168.0.88 is-at 00:04:f2:a6:7b:0c (oui Unknown), length 46
23:30:15.806440 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has masada tell 192.168.0.88, length 46
TIA,
Chris