Thanks Scott! It does bode well, despite the weird Dest Unreachable (Port
Unreachable) from the server.

Thanks again.

Priscilla

s vermill wrote:
> 
> Priscilla,
> 
> Well, it’s been an interesting project.  Unfortunately, the
> DHCP server app that I wound up trying (Vicomsoft) was so buggy
> that I couldn’t keep it from crashing.  Even when it was
> running, it was highly, highly unstable.  Granted, it was a
> demo, but I would think a demo would have basic functionality.
> 
> Furthermore, I couldn’t get into the console port of the
> 2900XL.  Tried everything.  The darned port is fried.
> 
> So…here is what I came up with:
> 
> 
>                            2621
>                             |
>                             |                               |
>                  Foundry Networks switch
>                   |                  |
>                   |                  |                    
|                  |
>               DHCP Serv          DHCP Client
> 
> 
> The 2621, with 64M of memory and 8M of flash, is running
> 12.1-18 IP Plus.  I don’t know much about the Foundry switch. 
> It was straight out of the box just yesterday.  I configured it
> with a dot1q trunk to the router, an access port in vlan 100
> (192.168.1.0/24), and an access port in vlan 200
> (192.168.2.0/24).  The server (192.168.1.100) was attached to
> VLAN 100 and the client (192.168.2.?) to vlan 200.  The router
> subinterfaces were the .1 address.  Subinterface F0/0.2 had an
> IP helper address of 192.168.1.100.
> 
> On a couple of occasions I moved the client to vlan 100.  The
> server did actually work two or three times with a local
> client.  It never once worked with a non-local client.  The
> good news is that the DHCP Discovery crossed the vlans via the
> 2621 and looked to be in pretty good shape:
> 
>  Frame 44 (343 bytes on wire, 343 bytes captured)
>     Arrival Time: Dec 21, 2002 18:01:21.694951000
>     Time delta from previous packet: 0.721309000 seconds
>     Time relative to first packet: 40.720429000 seconds
>     Frame Number: 44
>     Packet Length: 343 bytes
>     Capture Length: 343 bytes
> Ethernet II, Src: 00:02:fd:1d:c0:20, Dst: 00:08:74:03:77:b5
>     Destination: 00:08:74:03:77:b5 (Dell_Com_03:77:b5)
>     Source: 00:02:fd:1d:c0:20 (Cisco_1d:c0:20)
>     Type: IP (0x0800)
> Internet Protocol, Src Addr: 192.168.2.1 (192.168.2.1), Dst
> Addr: 192.168.1.100 (192.168.1.100)
>     Version: 4
>     Header length: 20 bytes
>     Differentiated Services Field: 0x00 (DSCP 0x00: Default;
> ECN: 0x00)
>         0000 00.. = Differentiated Services Codepoint: Default
> (0x00)
>         .... ..0. = ECN-Capable Transport (ECT): 0
>         .... ...0 = ECN-CE: 0
>     Total Length: 329
>     Identification: 0x0061
>     Flags: 0x00
>         .0.. = Don't fragment: Not set
>         ..0. = More fragments: Not set
>     Fragment offset: 0
>     Time to live: 255
>     Protocol: UDP (0x11)
>     Header checksum: 0x358d (correct)
>     Source: 192.168.2.1 (192.168.2.1)
>     Destination: 192.168.1.100 (192.168.1.100)
> User Datagram Protocol, Src Port: bootps (67), Dst Port: bootps
> (67)
>     Source port: bootps (67)
>     Destination port: bootps (67)
>     Length: 309
>     Checksum: 0xde84 (correct)
> Bootstrap Protocol
>     Message type: Boot Request (1)
>     Hardware type: Ethernet
>     Hardware address length: 6
>     Hops: 1
>     Transaction ID: 0xcb4d080c
>     Seconds elapsed: 17250
>     Bootp flags: 0x8000 (Broadcast)
>         1... .... .... .... = Broadcast flag: Broadcast
>         .000 0000 0000 0000 = Reserved flags: 0x0000
>     Client IP address: 0.0.0.0 (0.0.0.0)
>     Your (client) IP address: 0.0.0.0 (0.0.0.0)
>     Next server IP address: 0.0.0.0 (0.0.0.0)
>     Relay agent IP address: 192.168.2.1 (192.168.2.1)
>     Client hardware address: 00:06:5b:e4:d3:97
>     Server host name not given
>     Boot file name not given
>     Magic cookie: (OK)
>     Option 53: DHCP Message Type = DHCP Discover
>     Unknown Option Code: 251 (1 bytes)
>     Option 61: Client identifier
>         Hardware type: Ethernet
>         Client hardware address: 00:06:5b:e4:d3:97
>     Option 50: Requested IP Address = 192.168.1.2
>     Option 12: Host Name = "laprmccarverGFE"
>     Option 60: Vendor class identifier = "MSFT 5.0"
>     Option 55: Parameter Request List
>         1 = Subnet Mask
>         15 = Domain Name
>         3 = Router
> 
> Notice the relay agent address of 192.168.2.1.  That bodes
> well.  However, for some reason, this was the response:
> 
> Frame 45 (70 bytes on wire, 70 bytes captured)
>     Arrival Time: Dec 21, 2002 18:01:21.695010000
>     Time delta from previous packet: 0.000059000 seconds
>     Time relative to first packet: 40.720488000 seconds
>     Frame Number: 45
>     Packet Length: 70 bytes
>     Capture Length: 70 bytes
> Ethernet II, Src: 00:08:74:03:77:b5, Dst: 00:02:fd:1d:c0:20
>     Destination: 00:02:fd:1d:c0:20 (Cisco_1d:c0:20)
>     Source: 00:08:74:03:77:b5 (Dell_Com_03:77:b5)
>     Type: IP (0x0800)
> Internet Protocol, Src Addr: 192.168.1.100 (192.168.1.100), Dst
> Addr: 192.168.2.1 (192.168.2.1)
>     Version: 4
>     Header length: 20 bytes
>     Differentiated Services Field: 0x00 (DSCP 0x00: Default;
> ECN: 0x00)
>         0000 00.. = Differentiated Services Codepoint: Default
> (0x00)
>         .... ..0. = ECN-Capable Transport (ECT): 0
>         .... ...0 = ECN-CE: 0
>     Total Length: 56
>     Identification: 0x015b
>     Flags: 0x00
>         .0.. = Don't fragment: Not set
>         ..0. = More fragments: Not set
>     Fragment offset: 0
>     Time to live: 128
>     Protocol: ICMP (0x01)
>     Header checksum: 0xb4b4 (correct)
>     Source: 192.168.1.100 (192.168.1.100)
>     Destination: 192.168.2.1 (192.168.2.1)
> Internet Control Message Protocol
>     Type: 3 (Destination unreachable)
>     Code: 3 (Port unreachable)
>     Checksum: 0x1cbd (correct)
>     Internet Protocol, Src Addr: 192.168.2.1 (192.168.2.1), Dst
> Addr: 192.168.1.100 (192.168.1.100)
>         Version: 4
>         Header length: 20 bytes
>         Differentiated Services Field: 0x00 (DSCP 0x00:
> Default; ECN: 0x00)
>             0000 00.. = Differentiated Services Codepoint:
> Default (0x00)
>             .... ..0. = ECN-Capable Transport (ECT): 0
>             .... ...0 = ECN-CE: 0
>         Total Length: 329
>         Identification: 0x0061
>         Flags: 0x00
>             .0.. = Don't fragment: Not set
>             ..0. = More fragments: Not set
>         Fragment offset: 0
>         Time to live: 255
>         Protocol: UDP (0x11)
>         Header checksum: 0x358d (correct)
>         Source: 192.168.2.1 (192.168.2.1)
>         Destination: 192.168.1.100 (192.168.1.100)
>     User Datagram Protocol, Src Port: bootps (67), Dst Port:
> bootps (67)
>         Source port: bootps (67)
>         Destination port: bootps (67)
>         Length: 309
>         Checksum: 0xde84
> 
> I’m convinced it was the server app.  So if someone can point
> me to a better one, I’ll just bet this will work fine.  I
> didn’t think to try it without IP Plus.  Would you like me to? 
> The truth is, trunking support/functionality seems to be on a
> case-by-case basis where the 2600s are concerned.
> 
> Scott
> 




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