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Home > Archive > Voice over IP Cisco > June 2007 > Connection Monitor Duration
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Connection Monitor Duration
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| Lelio Fulgenzi 2007-06-28, 1:11 pm |
| Something doesn't sit well with me with a Connection Monitor Duration of 120 seconds. Having to wait 2 minutes before a phone registers with SRST seems like a long time to wait, especially if you have someone stuck in an elevator during a power outage. 
Has anyone changed this to something lower, like 30 seconds and seen any adverse affects?
--------------------------------------------------------------------------------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." WJR
| |
| Ryan Ratliff 2007-06-28, 1:11 pm |
| Connection Monitor Duration shouldn't control how fast a phone
registers with the SRST router. It controls how fast the phone fails
back to CM FROM the SRST router. The phone should still go into SRST
as soon as it loses connection to all CMs.
-Ryan
On Jun 28, 2007, at 9:07 AM, Lelio Fulgenzi wrote:
Something doesn't sit well with me with a Connection Monitor Duration
of 120 seconds. Having to wait 2 minutes before a phone registers
with SRST seems like a long time to wait, especially if you have
someone stuck in an elevator during a power outage.
Has anyone changed this to something lower, like 30 seconds and seen
any adverse affects?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| Lelio Fulgenzi 2007-06-28, 1:11 pm |
| Thanks for clearing that up Ryan. I read through it to quickly.
I guess I'm seeing the result of the sccp keepalives? I'd like them to register as quickly as possible. Both VG224 and phones.
Any suggestions?
--------------------------------------------------------------------------------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." WJR
----- Original Message -----
From: Ryan Ratliff
To: Lelio Fulgenzi
Cc: cisco-voip@puck.nether.net
Sent: Thursday, June 28, 2007 10:44 AM
Subject: Re: [cisco-voip] Connection Monitor Duration
Connection Monitor Duration shouldn't control how fast a phone
registers with the SRST router. It controls how fast the phone fails
back to CM FROM the SRST router. The phone should still go into SRST
as soon as it loses connection to all CMs.
-Ryan
On Jun 28, 2007, at 9:07 AM, Lelio Fulgenzi wrote:
Something doesn't sit well with me with a Connection Monitor Duration
of 120 seconds. Having to wait 2 minutes before a phone registers
with SRST seems like a long time to wait, especially if you have
someone stuck in an elevator during a power outage.
Has anyone changed this to something lower, like 30 seconds and seen
any adverse affects?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| Ryan Ratliff 2007-06-28, 1:11 pm |
| That varies based on the phone type. I can't comment on what the
VG224 does but the newer phones will be a bit faster to failover than
older phones in certain situations. All of them will failover
immediately if the TCP session is reset. Newer phones will take
about 4 seconds to failover after missing a TCP Ack. Older phones
will be a bit more forgiving. All of them will failover after
missing 2 or 3 (can never remember if server is 2 or phone is 2) SCCP
Keepalive Ack messages.
-Ryan
On Jun 28, 2007, at 10:47 AM, Lelio Fulgenzi wrote:
Thanks for clearing that up Ryan. I read through it to quickly.
I guess I'm seeing the result of the sccp keepalives? I'd like them
to register as quickly as possible. Both VG224 and phones.
Any suggestions?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
----- Original Message -----
From: Ryan Ratliff
To: Lelio Fulgenzi
Cc: cisco-voip@puck.nether.net
Sent: Thursday, June 28, 2007 10:44 AM
Subject: Re: [cisco-voip] Connection Monitor Duration
Connection Monitor Duration shouldn't control how fast a phone
registers with the SRST router. It controls how fast the phone fails
back to CM FROM the SRST router. The phone should still go into SRST
as soon as it loses connection to all CMs.
-Ryan
On Jun 28, 2007, at 9:07 AM, Lelio Fulgenzi wrote:
Something doesn't sit well with me with a Connection Monitor Duration
of 120 seconds. Having to wait 2 minutes before a phone registers
with SRST seems like a long time to wait, especially if you have
someone stuck in an elevator during a power outage.
Has anyone changed this to something lower, like 30 seconds and seen
any adverse affects?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
| |
| Lelio Fulgenzi 2007-06-28, 1:11 pm |
| Thanks again.
--------------------------------------------------------------------------------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." WJR
----- Original Message -----
From: Ryan Ratliff
To: Lelio Fulgenzi
Cc: cisco-voip@puck.nether.net
Sent: Thursday, June 28, 2007 11:04 AM
Subject: Re: [cisco-voip] Connection Monitor Duration
That varies based on the phone type. I can't comment on what the
VG224 does but the newer phones will be a bit faster to failover than
older phones in certain situations. All of them will failover
immediately if the TCP session is reset. Newer phones will take
about 4 seconds to failover after missing a TCP Ack. Older phones
will be a bit more forgiving. All of them will failover after
missing 2 or 3 (can never remember if server is 2 or phone is 2) SCCP
Keepalive Ack messages.
-Ryan
On Jun 28, 2007, at 10:47 AM, Lelio Fulgenzi wrote:
Thanks for clearing that up Ryan. I read through it to quickly.
I guess I'm seeing the result of the sccp keepalives? I'd like them
to register as quickly as possible. Both VG224 and phones.
Any suggestions?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
----- Original Message -----
From: Ryan Ratliff
To: Lelio Fulgenzi
Cc: cisco-voip@puck.nether.net
Sent: Thursday, June 28, 2007 10:44 AM
Subject: Re: [cisco-voip] Connection Monitor Duration
Connection Monitor Duration shouldn't control how fast a phone
registers with the SRST router. It controls how fast the phone fails
back to CM FROM the SRST router. The phone should still go into SRST
as soon as it loses connection to all CMs.
-Ryan
On Jun 28, 2007, at 9:07 AM, Lelio Fulgenzi wrote:
Something doesn't sit well with me with a Connection Monitor Duration
of 120 seconds. Having to wait 2 minutes before a phone registers
with SRST seems like a long time to wait, especially if you have
someone stuck in an elevator during a power outage.
Has anyone changed this to something lower, like 30 seconds and seen
any adverse affects?
------------------------------------------------------------------------
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * university of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo
buffalo." WJR
________________________________________
_______
cisco-voip mailing list
cisco-voip@puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
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