X.25 Traffic Switchover

[Abhijit P.]

Hi All,

Superdome 32 way has X.25 4 port card connected to 2 routers.Is it possible to switchover the traffic if the cables of one router or one router goes down?
IF yes how to do that?

I am new to X.25 ---please explain in detail

Thanks in Advance

Regards,
Abhijit

[Sung Oh]

Hi Abhijit,

First you want to know aboutthe X.25, see below link.
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/x25.htm

Second, What kind of router is it? and how did you connect 4 ports card to 2 routers? is it one cable to each routers?

Anyhow, most of frame relay devices are configured using SAM application. you can use below website link for your infomation on configuration of fram relay devices.

http://docs.hp.com/en/J3529-90012/J3529-90012.pdf

I hope this helps,

Sung

[Abhijit P.]

Hi Sung,

Thank you for the reply...

In fact Routers are connected to the cards via one cable each.

Please guide me what what all ways traffic switchover is possble.

Regards,
Abhijit

[Jim Keeble]

It's a pretty broad subject to describe in sufficient detail here, but I can give you some starting points.

Support for HA X.25 is described in the X.25 documentation here:

http://docs.hp.com/en/J2793-90046/ch03s07.html

It describes monitoring the link state to initiate a Serviceguard package failover to a second system in the event the X.25 link to your router goes down. This could possibly be adopted to failover to a second port on the same system.

For inbound X.25 calls, High availability would be handled on the router side (which really appears to the HP as an X.25 cloud). The X.25 cloud would have to support a feature called "hunt groups" that would direct calls to the HP's X.121 addresses to a different X.25 link.

[Jim Keeble]

Well, I spoke too soon, the manual describes failover from one card to another on the same system, too.

[Sung Oh]

Hi Abhijit,

In general cases, the traffic should find alternate route from router to router by default from 4 port card.

1. You need to configure the router to be routing the traffic when a router failed.

2. When you use the SAM configuration tool to swap a card, the SAM configuration tool will powering off entire 4 ports card slot. It is good idea to have another card that connect to another router.

Side Note: The configuration of your system is at great risk when you have 4 port card is failed because, in order to reconfigure a new card SAM configuration tool will power off that slot.

Best Regards,
Sung