[Asterisk-Users] hdlc setup routing question

[Joseph]

Not sure I understand what all you are doing here, but you need
your gateway to be on the same subnet as your main ip address.

Why do you assign 2 ip's to your pvc?

If ping's are allow, sometimes it helps to use traceroute to
see the path a packet is taking.


On Mon, 2004-06-07 at 15:21, Michael A Rowley wrote:
> Hello All,
> 
> I am battling a problem I don't know how to fix...  Here is the 
> scenario:
> 
> Fractionated T1 with 1-6 channels voice, 21-24 channels data.
> Comes into a box with Digium T100P, splits off data channes with HDLC, 
> to devicec pvc0,
> This works fine, but I have a routing problem getting to my machines!
> 
> Here is the current set up...
> 
> sethdlc hdlc0 fr lmi ansi
> sethdlc hdlc0 create 44
> ifconfig hdlc0 up
> ifconfig pvc0 xxx.xxx.250.74 netmask 255.255.255.252 pointopoint 
> xxx.xxx.250.73
> ifconfig pvc0:0 xxx.xxx.244.33 netmask 255.255.255.248
> 
> route add -default gw xxx.xxx.250.74 metric 1 pvc0
> 
> Now, this works, but has some unexpected results.... For example,the 
> xxx.xxx.250.74 ip belongs to the phone company, so when I try to use it 
> to access my machine, I get no response....   unless I set up the 
> alilas to xxx.xxx.244.33, then it works, but  not if I access 244.33, 
> only if I access 250.74 ???
> 
> my routing tables look like this from route:
> 
> host72.sprintne *               255.255.255.252 U     0      0        0 
> pvc0
> host32.sprintne *               255.255.255.248 U     0      0        0 
> pvc0
> 192.168.1.0     *               255.255.255.0   U     0      0        0 
> eth0
> loopback        asterisk        255.0.0.0       UG    0      0        0 
> lo
> default         host74.sprintne 0.0.0.0         UG    1      0        0 
> pvc0
> 
> and from ip route show
> 
> xxx.xxx.250.72/30 dev pvc0  proto kernel  scope link  src xxx.xxx.250.74
> xxx.xxx.224.32/29 dev pvc0  proto kernel  scope link  src xxx.xxx.224.33
> 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.1
> 127.0.0.0/8 via 127.0.0.1 dev lo  scope link
> default via xxx.xxx.250.74 dev pvc0  scope link  metric 1
> 
> what I want to be able to do is to ping xxx.xxx.224.33, and have that 
> IP  respond, then use the other IP addresses that I have avaliable as 
> my internal server addresses (for the machines to connect to the 
> internet), but until I figure out the routing, I am stuck here...  When 
> I trace route the xxx.xxx.224.33 address, I get a return of 
> xxx.xxx.250.74, when I ping, I get xxx.xxx.250.74, etc.
> 
> What I am wondering is if I should not have the system set up more like
> pvc0 ip xxx.xxx.250.74 pointopoint xxx.xxx.250.73
> eth0 ip xxx.xxx.224.33
> eth0:0 192.168.1.1 (for internal routing)
> with routing set up as
> default route xxx.xxx.224.33
> net route xxx.xxx.250.74 src xxx.xxx.244.33
> 
> and I am completely baffeled why xxx.xxx.224.72 shows up on the routing 
> at all....
> 
> This is a wierd setup, and apparently is beyond me... Can anyone help 
> me here?
> 
> Michael.
> 
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-- 
respectfully, Joseph - (606) 477-2355 x140
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