Looks like its time for me to re-evaluate our QoS parameters and queuing strategies. Our frame network is pretty healthy as its built with NO congestion points in the network, meaning all ports can operate at full speed without consequence.
The problem comes from e-mail. we use lotus notes and replicate a ton of e-mail and databases. Some of these databases are over 6 gig in size. notes is pretty good at only replicating changes, but if there is a multimegabyte change or someone has 100 megabytes of mail to download then a 384 kbit frame connection is going to get slammed.
So my question is - what's the best QoS approach to this common problem? priority queuing? custom queueing? CBWFQ?
I'm using priority queueing right now because I run multicast video to all the sites. I'll probably stick to priority queueing unless somebody can enlighten me. Below are a few T1 pvcs...
DC-7204-1#sh traff
Access Target Byte Sustain Excess Interval Increment Adap
t
I/F List Rate Limit bits/int bits/int (ms) (bytes) Acti
ve
Se1/0.335 128000 1000 8000 0 62 1000 -
Se1/4 56000 875 56000 0 125 875 -
Se1/4.511 640000 10000 80000 0 125 10000 BECN
Se1/4.512 256000 4000 32000 0 125 4000 BECN
Se1/4.513 384000 6000 48000 0 125 6000 BECN
Se1/4.514 56000 875 56000 0 125 875 -
Se1/4.515 56000 875 56000 0 125 875 -
Se1/4.531 56000 875 56000 0 125 875 -
Se1/4.532 56000 875 56000 0 125 875 -
Se1/4.536 56000 875 56000 0 125 875 -
Se1/4.543 56000 875 56000 0 125 875 -
Se1/4.544 56000 875 56000 0 125 875 -
Se1/5.521 512000 8000 64000 0 125 8000 BECN
Se1/5.522 384000 6000 48000 0 125 6000 BECN
Se1/5.523 128000 2000 16000 0 125 2000 BECN
Se1/5.524 256000 4000 32000 0 125 4000 BECN
Se1/5.525 128000 2000 16000 0 125 2000 BECN
Se1/5.526 56000 875 56000 0 125 875 -
Se1/5.533 56000 875 56000 0 125 875 -
Se1/5.534 56000 875 56000 0 125 875 -
Se1/5.542 56000 875 56000 0 125 875 -
Se1/5.551 56000 875 56000 0 125 875 -
The small 56k pvs are all backups, the whole network is redundant. I'm thinking about moving notes from the normal queue to the low queue to eliviate some of the pain of large bulk transfers. Interactive apps like our ERP are medium queued and work fine.
Any ideas?
The problem comes from e-mail. we use lotus notes and replicate a ton of e-mail and databases. Some of these databases are over 6 gig in size. notes is pretty good at only replicating changes, but if there is a multimegabyte change or someone has 100 megabytes of mail to download then a 384 kbit frame connection is going to get slammed.
So my question is - what's the best QoS approach to this common problem? priority queuing? custom queueing? CBWFQ?
I'm using priority queueing right now because I run multicast video to all the sites. I'll probably stick to priority queueing unless somebody can enlighten me. Below are a few T1 pvcs...
DC-7204-1#sh traff
Access Target Byte Sustain Excess Interval Increment Adap
t
I/F List Rate Limit bits/int bits/int (ms) (bytes) Acti
ve
Se1/0.335 128000 1000 8000 0 62 1000 -
Se1/4 56000 875 56000 0 125 875 -
Se1/4.511 640000 10000 80000 0 125 10000 BECN
Se1/4.512 256000 4000 32000 0 125 4000 BECN
Se1/4.513 384000 6000 48000 0 125 6000 BECN
Se1/4.514 56000 875 56000 0 125 875 -
Se1/4.515 56000 875 56000 0 125 875 -
Se1/4.531 56000 875 56000 0 125 875 -
Se1/4.532 56000 875 56000 0 125 875 -
Se1/4.536 56000 875 56000 0 125 875 -
Se1/4.543 56000 875 56000 0 125 875 -
Se1/4.544 56000 875 56000 0 125 875 -
Se1/5.521 512000 8000 64000 0 125 8000 BECN
Se1/5.522 384000 6000 48000 0 125 6000 BECN
Se1/5.523 128000 2000 16000 0 125 2000 BECN
Se1/5.524 256000 4000 32000 0 125 4000 BECN
Se1/5.525 128000 2000 16000 0 125 2000 BECN
Se1/5.526 56000 875 56000 0 125 875 -
Se1/5.533 56000 875 56000 0 125 875 -
Se1/5.534 56000 875 56000 0 125 875 -
Se1/5.542 56000 875 56000 0 125 875 -
Se1/5.551 56000 875 56000 0 125 875 -
The small 56k pvs are all backups, the whole network is redundant. I'm thinking about moving notes from the normal queue to the low queue to eliviate some of the pain of large bulk transfers. Interactive apps like our ERP are medium queued and work fine.
Any ideas?