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dhcp option 67

Hi,

I am trying to configure the option dhcp 67 on one of the cisco switches but I receive the error that the "dhcp doesnt allow raw option 67 "

Any idea?

2 REPLIES
Cisco Employee

Re: dhcp option 67

New Member

Re: dhcp option 67

had the same problem. Installed 12.2(46)SE and was able to enter the option...unfortunately the DHCP Server doesn't seem to send option 67 or 66.

!

!

ip dhcp pool DATA

network 192.168.6.0 255.255.255.0

default-router 192.168.6.1

dns-server 192.168.5.23 192.168.6.1

netbios-name-server 192.168.5.23

option 43 hex 3a02.00c8.ff

!

ip dhcp pool VOICE

network 192.168.161.0 255.255.255.0

default-router 192.168.161.1

dns-server 192.168.5.23 192.168.6.1

netbios-name-server 192.168.5.23

option 66 ip 192.168.7.21

option 43 hex 616c.6361.7465.6c2e.6e6f.652e.30

option 67 ascii "lanpbx.cfg"

!

Here is a capture from one of the dhcp packets:

Frame 198 (342 bytes on wire, 342 bytes captured)

Ethernet II, Src: Cisco_01:cd:c2 (00:1f:27:01:cd:c2), Dst: AlcatelB_78:75:8b (00:80:9f:78:75:8b)

Internet Protocol, Src: 192.168.161.4 (192.168.161.4), Dst: 192.168.161.58 (192.168.161.58)

User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)

Source port: bootps (67)

Destination port: bootpc (68)

Length: 308

Checksum: 0x3c47 [correct]

Bootstrap Protocol

Message type: Boot Reply (2)

Hardware type: Ethernet

Hardware address length: 6

Hops: 0

Transaction ID: 0x72c3097a

Seconds elapsed: 0

Bootp flags: 0x0000 (Unicast)

Client IP address: 0.0.0.0 (0.0.0.0)

Your (client) IP address: 192.168.161.58 (192.168.161.58)

Next server IP address: 0.0.0.0 (0.0.0.0)

Relay agent IP address: 0.0.0.0 (0.0.0.0)

Client MAC address: AlcatelB_78:75:8b (00:80:9f:78:75:8b)

Server host name not given

Boot file name not given

Magic cookie: (OK)

Option: (t=53,l=1) DHCP Message Type = DHCP ACK

Option: (t=54,l=4) Server Identifier = 192.168.161.4

Option: (t=51,l=4) IP Address Lease Time = 1 day

Option: (t=58,l=4) Renewal Time Value = 12 hours

Option: (t=59,l=4) Rebinding Time Value = 21 hours

Option: (t=1,l=4) Subnet Mask = 255.255.255.0

Option: (t=3,l=4) Router = 192.168.161.1

Option: (t=43,l=13) Vendor-Specific Information

End Option

Padding

Why don't I see Option 66 or 67?

Cheers Tom

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