FR urgent help

Unanswered Question
Sep 24th, 2008

gusy i was seeing config of one of the routers and i was shocked to see something which didnt make any scence to me just wanted to share it with you so that someone can correct me.....

there are three sites connected to a main site......A,B,C no subinterfaces are configured

the config on router a was (i m putting dif IP)

router A ip address 192.168.1.1

255.255.255.0

no frame-relay inverse arp

frame-relay map ip 192.168.1.2 dlci 20 broadcast(20 is local)

frame-relay map ip 192.168.1.1 dlci 20

al i wanna know is why we are mapping out dlci with out own interface....is it right or wrong???can someone please tell me as i m going nuts....thanks for looking guys

I have this problem too.
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hardiklodhia Thu, 09/25/2008 - 00:07

hi,

a static layer 3 to layer 2 protocol mapping is defined

through the frame-relay map [protocol] [protocol_address] [dlci] [broadcast]

interface command.Also since native broadcast and multicast transmission is not supported on an NBMA media the broadcast keyword instructs the router to send both broadcast

and multicast traffic out the DLCI as a replicated unicast.

In ur case i suppose dlci 20 is assigned for connecting main site. in this case 1.2 ip is mapped with dlci 20 and 1.1 is ur own interface ip which is even mapped with dlci 20 bcoz might they want to enable ping on that interface.by default u cant ping ur own interface ip in FR.

if i misunderstod ur scenario then plz correct me.

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