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New Member

how to use 128 Kbps with two individual 64 Kbps links

i have a client with 2x64 kbps links. i am not able use total 128 kbps while downloading or uploading. i just configured two ip's to serial ports & encap hdlc & default routing. can u suggest me to configure 128 kbps

12 REPLIES
New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

you can use multilink to bundle up the 2x64kbps to 128kbps

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

changed encap ppp & ppp multilink then also i am not able to use 128 Kbps for downloading or uploading

Silver

Re: how to use 128 Kbps with two individual 64 Kbps links

What is the link ? I suspect it may be the physical limitation of the media. Did you successful to have 64kbps down/uploadb speed when separated to two links ?

There are two ways :

1) enable MLPPP but you said you tried and not able to reach the limitation.

2) use routing protocol to load-sharing two links.

Moreover, do you confirm there is 128kbps traffic to fully utilize the bandwidth ?

Please provide the config. for reference.

Hope this helps.

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

yes i am sucessfull when using single 64 Kbps. i tried to upload/download one file with 10 MB it was coming 7.0 KB/s

but when i am using 2x64 Kbps then also download/upload is coming with 7.0 KB/s

int ser0/0/0

ip address 192.168.205.42 255.255.255.252

encap ppp

ppp multilink

int ser0/0/1

ip address 192.168.205.46 255.255.255.252

encap ppp

ppp multilink

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

first of all create a multilink as:

Router> enable

Router# configure terminal

Router(config)# interface multilink 1

Router(config-if)# ip address 192.168.205.42 255.255.255.252

Router(config-if)# ppp multilink interleave

Router(config-if)# end

now apply it to both serials as:

Router> enable

Router# configure terminal

Router(config)# interface serial 0/0/0

Router(config-if)# no ip address

Router(config-if)# encap ppp

Router(config-if)# ppp multilink

Router(config-if)# ppp multilink group 1

Router(config-if)# end

Router> enable

Router# configure terminal

Router(config)# interface serial 0/0/1

Router(config-if)# no ip address

Router(config-if)# encap ppp

Router(config-if)# ppp multilink

Router(config-if)# ppp multilink group 1

Router(config-if)# end

now check it whether you are getting 2x64kbps

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

hi minimintu

i configured this config. but i am able find 128 Kb in multilink show interface. but when i am trying to download or upload speed was verymuch decreased than earlier. earlier it was 7.2 Kb now it was 5.6Kb/s.

Silver

Re: how to use 128 Kbps with two individual 64 Kbps links

Can you provide the "show interface multilink 1" capture to us ?

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

hi minimintu

earlier was wrong

i tried with this configuration. uploading is coming at 12 Kb/s but downloading was coming at 5.6 or 6 kb/s

what might be the problem

thanks for ur advice it was half solved

Silver

Re: how to use 128 Kbps with two individual 64 Kbps links

Your current configuration may only provide two individual PPP connections, it may be load-sharing by two equal cost routes.

However, it may also work on single link due to one route is preferred path only (i.e. lower cost).

You can check two interfaces' status to determine the remote config. (if it is not under your control) is similar or not. If both interfaces are up and able to be ping from local to remote IP (e.g. .41 & .45) then both sides are not configured w/ complete MLPPP. You have to follow Nisha's post to configure it at both sides. As agreed w/ Edison, you have to clarify the remote router can support MLPPP or not. If not, you can use two equal cost routes to load-sharing the traffic at outgoing direction. e.g. two static routes w/ same destination subnet and different next-hop.

Hope this helps.

Hall of Fame Super Bronze

Re: how to use 128 Kbps with two individual 64 Kbps links

Kotesh,

MLPPP, as suggested by others, will provide you with the bandwidth aggregation. However, you need to work with whoever (ISP or Remote Office) administers the remote router(s). You can push 128kbps with MLPPP in your side but you need to configure the same at the other side in order to get the same traffic back.

Re: how to use 128 Kbps with two individual 64 Kbps links

Hi Kotesh,

To test a bandwidth with the help of downloading a file from any application may not give correct readings.

May I suggest you to try with the help of Extended Ping with a heavy payload and see if that makes any difference when using both the links as compared to a single link.

It may help.

Kind Regards,

Wilson Samuel

Kinly rate if it helps.

New Member

Re: how to use 128 Kbps with two individual 64 Kbps links

minimintu

has given this solution

first of all create a multilink as:

Router> enable

Router# configure terminal

Router(config)# interface multilink 1

Router(config-if)# ip address 192.168.205.42 255.255.255.252

Router(config-if)# ppp multilink interleave

Router(config-if)# end

now apply it to both serials as:

Router> enable

Router# configure terminal

Router(config)# interface serial 0/0/0

Router(config-if)# no ip address

Router(config-if)# encap ppp

Router(config-if)# ppp multilink

Router(config-if)# ppp multilink group 1

Router(config-if)# end

Router> enable

Router# configure terminal

Router(config)# interface serial 0/0/1

Router(config-if)# no ip address

Router(config-if)# encap ppp

Router(config-if)# ppp multilink

Router(config-if)# ppp multilink group 1

Router(config-if)# end

this solved my problem

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