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186 Appendix B Troubleshooting WLAN IP Telephony installations
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
IP address
Code. 8 bits. Always set to 7.
Length. 8 bits. 4+ in multiples of 4.
IP address. 32 bits. One or more IPv4 addresses.
RFCs: [RFC 2132] DHCP Options.
Updated by: RFC 3942.
DHCP option 15: 3+ bytes This option specifies the domain name that client should use when
resolving hostnames via DNS.
00 01 02 03 04 05 06 07
Code
08 09 10 11 12 13 14 15
Length
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Domain name
Code. 8 bits. Always set to 15.
Length. 8 bits. 1+.
Domain name. Variable length.
RFCs: [RFC 2132] DHCP Options
DHCP option 42: Length 4+bytes This option specifies a list of IP addresses indicating Network
Time Protocol (NTP) servers available to the client. Servers SHOULD be listed in order of
preference.
00 01 02 03 04 05 06 07
Code
08 09 10 11 12 13 14 15
Length
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
IP address
Code. 8 bits. Always set to 3.
Length. 8 bits. 4+ in multiples of 4.
IP address. 32 bits. One or more IPv4 addresses.
RFCs: [RFC 2132] DHCP Options.
Updated by: RFC 3942.
DHCP option 43 1+ Vendor specific information. RFC 1533, RFC 2132
DHCP option 60 1+ Class-identifier. RFC 1533, RFC 2132 – must be the string value of:
Nortel-221x- A or Nortel-61xx-A
DHCP option 66 1+ TFTP server name. RFC 2132
DHCP option 128 TFPT Server IP address.
DHCP option 144 1+ Vendor specific information. RFC 1533, RFC 2132
DHCP option 151 1+ Vendor specific information. RFC 1533, RFC 2132
DHCP option 152 1+ Vendor specific information. RFC 1533, RFC 2132
DHCP option 157 1+ Vendor specific information. RFC 1533, RFC 2132
DHCP option 191 1+ Vendor specific information. RFC 1533, RFC 2132
Nortel Communication Server 1000
WLAN IP Telephony Installation and Commissioning
NN43001-504 01.02 Standard
Release 5.0 15 June 2007
Copyright © 2004-2007, Nortel Networks
.