Is the value of "xx.yy" the same on the HOME statement. Eeach interface
must have different home address.
|---------+---------------------------->
| | Dave Tibbetts |
| | <[EMAIL PROTECTED]|
| | h.net> |
| | Sent by: Linux on|
| | 390 Port |
| | <[EMAIL PROTECTED]|
| | ist.edu> |
| | |
| | |
| | 09/01/04 10:36 AM|
| | Please respond to|
| | Linux on 390 Port|
| | |
|---------+---------------------------->
>-----------------------------------------------------------------------------------------------------------------------|
|
|
| To: [EMAIL PROTECTED]
|
| cc: (bcc: Eddie Chen/SIAC)
|
| Subject: Proxy Arp question
|
>-----------------------------------------------------------------------------------------------------------------------|
I'm trying to install a 7.2 copy of Red Hat S/390 on a 2nd level z/VM
4.3 box. The second level VM system has a direct connection to the world
via a Bustech MAN box. The IP address I've been given for the new Linux
instance is within my subnet, so until I receive addresses in another
subnet, I figured I could install the linux box using vCTC's and proxy
arp that address via VM's TCP stack prior to moving to guest lan.
During the install process, my VM and Linux machines see each other's IP
address. I can telnet or ping from my 2nd level VM machine to Linux -
but can't ping from outside the 2nd level VM machine. When I issue a
NETSTAT ARP , I see the address of my linux instance on the Bustech
link rather than the CTC link. Is this correct?
We're not using ROUTED or MPROUTE and have no firewalls installed. What
piece did I miss along the way?
Thanks,
Dave
Here's the relevant data and a wonderful artist rendering of the machine
config:
VM TCP/IP 4.3
ASSORTEDPARMS
ProxyArp
VarSubnetting
HOME
xx.yy.1.63 BTILINK ; MITVMT
xx.yy.1.63 CTCLNX01 ; MITVMT
GATEWAY
; (IP) Network First Link Max. Packet Subnet Subnet
; Address Hop Name Size (MTU) Mask Value
; ----------- ------------ ------- ----------- ----------- --------
;
xx = BTILINK 1500 0.255.0.0 0.yy.0.0
;
; ----------------------------------------------------------------------
; Static Indirect and Host routes are defined below
; ----------------------------------------------------------------------
;
xx xx.yy.0.1 BTILINK 1500 0.255.0.0 0
xx.yy.0.7 = CTCLNX01 4096 HOST
---------------------------------------------------------------------------------------------------
netstat arp *
VM TCP/IP Netstat Level 430
Querying ARP cache for address *
Link BTILINK : ETHERNET: 0005DC95D00A IP: xx.yy.0.1
Link BTILINK : ETHERNET: 0007E9251926 IP: xx.yy.0.3
Link BTILINK : ETHERNET: 0007E9251927 IP: xx.yy.0.7
Link BTILINK : ETHERNET: 0007E9251927 IP: xx.yy.1.63
----------------------------------------------------------------------------------------------------
VM TCP/IP Netstat Level 430
Known gateways:
NetAddress FirstHop Flgs PktSz Subnet Mask Subnet Value Link
---------- -------- ---- ----- ----------- ------------
------
Default xx.yy.0.1 UGS 1500 <none>
BTILINK
xx.0.0.0 xx.yy.0.1 UGS 1500 0.255.0.0 0.0.0.0
BTILINK
xx.0.0.0 <direct> US 1500 0.255.0.0 0.yy.0.0
BTILINK
xx.yy.0.7 <direct> UHS 4096 HOST
CTCLNX01
-------------------------------------------------------------------------------------
2nd level z/VM 4.3
------------------------------
| |
| |-----------------|
| xx.yy.0.1
| | TCPIP
|__________xx.yy.1.63____________-------------------
| |-----------------|
| - Router -
| | |
-------------------
| | vCTC |
| | |
| --------|---------- |
| Red Hat |
| S/390 |
| 7.2 |
| xx.yy.0.7 |
| ----------------- |
|-----------------------------|
Dave Tibbetts
Massachusetts Institute of Technology
617-253-3330
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