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New Contributor
Posts: 3
Registered: ‎04-15-2016

Procedure to change FCIP tunnel/circuit bandwidth on 7800

Hello Guys,


Greeting...

We have an existing setup of FCIP tunnel/circuit running at 34 Mbps.

We just had our WAN links upgraded and hence would like to increase the tunnel/circuit bandwidth to 500 Mbps.

Can you please let me know the procedure/steps to change the speed of the circuit?


Switch:admin> portshow fciptunnel all -c
-------------------------------------------------------------------------------
Tunnel Circuit OpStatus Flags Uptime TxMBps RxMBps ConnCnt CommRt Met
-------------------------------------------------------------------------------
16 - Up ------- 22h18m 0.01 33.69 358 - -
16 0 ge3 Up ---4--s 22h18m 0.01 33.69 358 340/340 0
17 - InProg m------ 0s 0.00 0.00 0 - -
17 0 ge1 InProg ---4--s 0s 0.00 0.00 0 100/100 0
-------------------------------------------------------------------------------

 

And just wondering if this could be done online? Or would we have to shut down the tunnel/circuit to change the bandwidth?

 

Thanks in advance,
Altaf

External Moderator
Posts: 5,594
Registered: ‎02-23-2004

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

Is suggested to disable single circuit before do maintenance.

 

portcfg fcipcircuit -operands- "modify"

 

for details refer FCIP admin guide

TechHelp24
New Contributor
Posts: 3
Registered: ‎04-15-2016

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

Hello TechHelp24,

 

Thank you for your response. 

Can you please confirm if the below steps/commands will do? Please let me know if I am missing something.


Step 1:
On Switch A - portdisable 16

Step 2:
On Switch B - portdisable 16

Step 3:
On Switch A - portcfg fciptunnel 16 modify remote_ip_address local_ip_address 500000

Step 4:
On Switch B - portcfg fciptunnel 16 modify remote_ip_address local_ip_address 500000

Step 5:
On Switch A - portenable 16

Step 6:
On Switch B - portenable 16


Regards,
Altaf

External Moderator
Posts: 5,594
Registered: ‎02-23-2004

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

that work, but i suggest the command

 

portcfg fcipcircuit ( is applicable in a multi-circuit tunnel ) to avoid downtime.

TechHelp24
New Contributor
Posts: 3
Registered: ‎04-15-2016

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

Thank you.

 

We have just one circuit in this tunnel - So I guess we are good there...

 

And I just found another alternate command for changing the link speed.

 

"portcfg fciptunnel 16 modify -b 500000 -B 500000"

 

So is specifying the ip address field mandatory?

Can you please explain the difference of both the command and which one should I go for? Thanks.

 

 

Regards,

Altaf

 

 

New Member
Posts: 1
Registered: ‎01-02-2019

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

Hi Altaf,,

 

Just wondering that work as plan.. Would you please share it ?

Contributor
Posts: 65
Registered: ‎05-26-2010

Re: Procedure to change FCIP tunnel/circuit bandwidth on 7800

For your 7800 configuration (single circuit on tunnel 16 and 17) the command you listed is correct.

 

The commands are:

"portcfg fciptunnel 16 modify -b 500000 -B 500000"

"portcfg fciptunnel 17 modify -b 500000 -B 500000"

 

You need to set the values identical at each location.

 

If you have ARL (adaptive rate limit) license then Brocade suggests to use it by setting the upper and lower

limit bandwidths to no more that 5x difference.  So for WAN circuit of 500000 kpbs (500Mbps), the

lower and upper limit can be no more than -b 100000 and  -B 500000.    ARL is useful when a

WAN circuits capacity may fluctuate. The 7800 (and 7840) will adjust the throughput to ensure

the circuit is not being over-run should the WAN bandwidth drop below 500000.  ARL wil restore

the b/w rate to max configured when it deems the WAN can handle it.

 

Here is a youtube video about ARL: https://www.youtube.com/watch?v=oI0IP_JKcqA

 

 

The comments and advise included are the author's and do not mirror the views and opinions of any company. Any comments, advise, statements or references are without warranty, liability or claims of expertise. You should seek the assistance of the professional entity for subject matter being pursued.

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