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Stimulating voice traffic though specific backbone links

barisal
Level 1
Level 1

Hi All;

We have running frame-mode MPLS backbone and OPSF as well. Voice as real-time traffic is passing through our backbone links and marked with precedence 5 as an ordinary behaviour.

What i face is that i can not balance the voice traffic between the uplinks of the LER routers through LSR routers. Let me summarise like this.

I have a PE that has 4xE1 connection as uplinks terminated at two different LSRs. However, when i look at the voice traffic distribution from PE to Ps,the general attribute is voice traffic is choosing only one E1 and uses it. And other links are not used so much by voice traffic. And this causes poor quality of voice because, it exceeds the amount of the reserved bandtwidth that is defined via LLQ under the backbone links. I have also re-defined the priorty class bantwidth and raised it as much as it can be defined, but now, the business in contract traffic is under danger. :)

As OSPF does not support unequal load-balancing and also "load-sharing per-packet" command sucks the voice traffic, there is nothing to balance the voice traffic on the backbone links.

By the way, i have defined MPLS/TE tunnels that are PE-PE tunnels, according to my observations of voice traffic goes to where. I tried to balance the output traffic somehow but the situation is still the same. Sometimes, traffic chooses one tunnel and goes over there. In fact this problem bears with CEF itself but this is another case.

So any suggestion how i can come over this obstacle. Thanks in advance.

Regards,

Baris.

1 Reply 1

barisal
Level 1
Level 1

Does anybody have any suggestion how to distribute the voice traffic on the backbone links according to the topology i have mentioned in topic opening message ? All in all, thank to you all.

Baris.

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