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split / shaping bandwidth between different branch offices

VegaNenar
Beginner
Beginner

Hello,

I searched the forum for similar thread but I could not find one that would give me
the answers I was looking for , so I apologize if t wasn't able to find it .

I have a 100Mbps connection to Internet. The ISP's router has a Gigabit interface. This router cannot be configurated.

I must divide the band among 20 different branch offices but rather than giving each 5Mbs, I would give each 5Mbps guaranteed and 10Mbps peak

I thought I could put a new router ( Can you recommend the model? ) Between the ISP router and the central switch (a Catalyst 3750) that connects the offices and do on this policing and shaping.

I thought of using a Two-Rate policer , classifying according to IP's classes of branch offices . And use something like

class-map police
match access-group 101
policy-map policy1
police cir 5000000 bc 78125 pir 10000000 be 312500
conform-action set-dscp-transmit af41
exceed-action set-dscp-transmit af13
violate-action drop

for policy1... to policy20 with the same configuration except for the ACL (which has to match on IP )

and then apply it to my router on INPUT either on the ISP side that on switch side.

and than apply on both OUTPUT side a policy like that

policy-map anti-congestion
class class-default
bandwidth 100000
random-detect dscp-based
random-detect dscp 14 5 100
random-detect dscp 34 4095 4096 1

what do you think ? Which model of router should I use ?

Thanks in advance

2 Replies 2

Joseph W. Doherty
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

To confirm, your hub/HQ has logically 100 Mbps, duplex, and physically gig?

What do your branches have for bandwidth?

Will you traffic be using tunnels?

For 100 Mbps, Cisco recommends a 3925.

  • Hi Jospeth

To confirm, your hub/HQ has logically 100 Mbps, duplex, and physically gig?

Yes.

What do your branches have for bandwidth?

Will you traffic be using tunnels?

They are not remote sites. The Office are in the same building. They are connected with gigabit ethernet . For each floor there are switches and on each floor there are several independent offices . But the connection to the internet is one,

For 100 Mbps, Cisco recommends a 3925.

Thanks

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