- Multiple Serial Ports with a single IP
- Posted by wjohnson@uwgrocers.com on December 6th, 2004
I have a Motorola 6560 router that I want to replace with a Cisco
router. The Motorola 6560 has two T1 Serial interfaces with about 60
frame relay pvc's on each serial interface. There PVC's are all on the
main serial interface, there are no sub interfaces. On the Motorola
routers IP interfaces are not tied directly to physical interfaces but
mainted in a seperate router interfaces table. This allows the two
serial interfaces to have the same IP address as they are connectd to
the same "router" interface.
Is there a way to have two serial interfaces share the same ip and
respond correctly to inverse arp requests?
- Posted by Erik Freitag on December 6th, 2004
On Mon, 06 Dec 2004 10:47:04 -0800, wjohnson wrote:
I'm not sure about the inverse ARP requests, but IOS does support
multi-link frame relay - if your carrier supports it. This might give you
the bandwidth you're looking for.
- Posted by Aaron Leonard on December 7th, 2004
On 6 Dec 2004 10:47:04 -0800, wjohnson@uwgrocers.com wrote:
~ I have a Motorola 6560 router that I want to replace with a Cisco
~ router. The Motorola 6560 has two T1 Serial interfaces with about 60
~ frame relay pvc's on each serial interface. There PVC's are all on the
~ main serial interface, there are no sub interfaces. On the Motorola
~ routers IP interfaces are not tied directly to physical interfaces but
~ mainted in a seperate router interfaces table. This allows the two
~ serial interfaces to have the same IP address as they are connectd to
~ the same "router" interface.
~
~ Is there a way to have two serial interfaces share the same ip and
~ respond correctly to inverse arp requests?
I haven't played with FR in a long time, but back when I did,
my preference was to use FR subints. You can create a loopback
interface and give it the one address you want, then use "ip unnumbered"
on the subints.
Aaron
