From: kumara.shunmugam@wipro.com
Date: Fri Aug 12 2005 - 06:58:54 GMT-3
Hi Qos Masters
There is a Hub n spoke frame-relay topology is configured between R3,R1&R2
with R3 as a HUB. The configuration is a Multipoint frame-relay map config. A
Vlan named Vlan127 is exists behind R1 & R2 (Both R1 & R2's Ethernets are
connecting to this VLAN).
Since there is a port speed difference between R2(64K) & R3(1.5Mb hub), the
question is asking us to configure FRTS with 64K as a CIR and 4000bits as Be.
After doing this, the next question 7.5 is given in such a way that, now the
users in Vlan 127 (behind R1 & R2) who are using R1 as their default gateway
to R3 are experiencing problem and we need to fix this .. The answer is to
create one more map-class with CIR as 1536000 and apply the same in Dlci 301
(R3 to R1 Circuit) in R3. Why is this configuration done explicitly in R3 with
CIR as AR (port speed). If you don't do this also, I think the R3 should have
freedom to use the port speed as its average output rate to R1 in 301 Dlci as
the old FRTS is configured only between R2 & R3(per Dlci FRTS )..
The only hint here is, our R3 is load balancing between R1 & R2 to reach the
Vlan127 thru EBGP.
But still why do we need to configure a port speed equivalent map-class and
apply it to dlci 301 when it can burst up to AR by default in this dlci ?
Any Inputs ?
Regards
Shunmugam
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