Use SNTP?
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/fun_
r/frprt3/frd3003.htm#1020770
sntp server
To configure a Cisco 1003, Cisco 1004, Cisco 1005, Cisco 1600, Cisco 1720,
Cisco 1750, or Cisco 800 router to use the Simple Network Time Protocol
(SNTP) to request and accept Network Time Protocol (NTP) traffic from a
stratum 1 time server, use the sntp server global configuration command. The
no form of the command removes a server from the list of NTP servers.
sntp server {address | hostname} [version number]
no sntp server {address | hostname}
Syntax Description
address
IP address of the time server.
hostname
Host name of the time server.
version number
(Optional) Version of NTP to use. The default is 1.
Defaults
The router does not accept SNTP traffic from a time server.
Command Modes
Global configuration
Command History
Release Modification
11.2
This command was introduced.
Usage Guidelines
SNTP is a compact, client-only version of the NTP. SNMP can only receive the
time from NTP servers; it cannot be used to provide time services to other
systems.
SNTP typically provides time within 100 milliseconds of the accurate time,
but it does not provide the complex filtering and statistical mechanisms of
NTP. In addition, SNTP does not authenticate traffic, although you can
configure extended access lists to provide some protection.
Enter this command once for each NTP server.
You must configure the router with either this command or the sntp broadcast
client command in order enable SNTP.
SNTP time servers should operate only at the root (stratum 1) of the subnet,
and then only in configurations where no other source of synchronization
other than a reliable radio or modem time service is available. A stratum 2
server cannot be used as an SNTP time server. The use of SNTP rather than
NTP in primary servers should be carefully considered.
Examples
The following example enables the router to request and accept NTP packets
from the server at 172.21.118.9 and shows sample show sntp command output:
Router(config)# sntp server 172.21.118.9
Router(config)# end
Router#
%SYS-5-CONFIG: Configured from console by console
Router# show sntp
SNTP server Stratum Version Last Receive
172.21.118.9 5 3 00:01:02 Synced
Related Commands
Command Description
show sntp
Shows information about the SNTP on a Cisco 1003, Cisco 1004, Cisco 1005,
Cisco 1600, Cisco 1720, or Cisco 1750 router.
sntp broadcast client
Configures a Cisco 1003, Cisco 1004, Cisco 1005, Cisco 1600, Cisco 1720, or
Cisco 1750 router to use the SNTP to accept NTP traffic from any broadcast
server.
Martijn
-----Oorspronkelijk bericht-----
Van: Herold Heiko [mailto:[EMAIL PROTECTED]
Verzonden: donderdag 7 augustus 2003 11:04
Aan: Jansen, M; [EMAIL PROTECTED]
Onderwerp: RE: Cisco 806 ? [7:73613]
No, it is unrelated - I just remembered the 1000 series being limited
(regarding at least NTP) and feared the 800 series, being the replacement
for the 1000 series, could have the same limitations.
Heiko
--
-- PREVINET S.p.A. www.previnet.it
-- Heiko Herold [EMAIL PROTECTED]
-- +39-041-5907073 ph
-- +39-041-5907472 fax
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> Sent: Thursday, August 07, 2003 10:51 AM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: RE: Cisco 806 ? [7:73613]
>
>
> What about NTP? Should it read NAT?
>
> Martijn
>
> -----Oorspronkelijk bericht-----
> Van: Herold Heiko [mailto:[EMAIL PROTECTED]
> Verzonden: donderdag 7 augustus 2003 8:10
> Aan: [EMAIL PROTECTED]
> Onderwerp: RE: Cisco 806 ? [7:73613]
>
>
> Thanks!
> I just wanted to double check - some hears ago I got burnt in
> a similar
> situation, with a 1003 and (no) NTP if I remember correctly.
> Heiko
>
> --
> -- PREVINET S.p.A. www.previnet.it
> -- Heiko Herold [EMAIL PROTECTED]
> -- +39-041-5907073 ph
> -- +39-041-5907472 fax
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, August 07, 2003 8:04 AM
> > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> > Subject: RE: Cisco 806 ? [7:73613]
> >
> >
> > It does. It is IOS. Just do your CLI thing.
> >
> > Martijn
> >
> > -----Oorspronkelijk bericht-----
> > Van: Herold Heiko [mailto:[EMAIL PROTECTED]
> > Verzonden: woensdag 6 augustus 2003 17:21
> > Aan: [EMAIL PROTECTED]
> > Onderwerp: Cisco 806 ? [7:73613]
> >
> >
> > Hi,
> >
> > for some tests I need something cheap to play with, having 2
> > eth, vpn and
> > (static) nat capability. Could anybody confirm if a 806 with
> > a "IP/FW PLUS
> > 3DES" image does support IPSEC and NAT at the same time ?
> > From the docs I'd say it does support both but can I have a
> > vpn tunnel, and
> > nat inside the local network, and nat outside the remote (on
> > the other end
> > of the tunnel) network ?
> > The other endpoint would be a pix or a fw-1 although that
> > shouldn't matter.
> > Couldn't find any configrmation of this in the docs :(
> > Thanks
> > Heiko
> >
> > --
> > -- PREVINET S.p.A. www.previnet.it
> > -- Heiko Herold [EMAIL PROTECTED]
> > -- +39-041-5907073 ph
> > -- +39-041-5907472 fax
> > **Please support GroupStudy by purchasing from the GroupStudy Store:
> > http://shop.groupstudy.com
> > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com/list/cisco.html
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