From: kym blair (kymblair@xxxxxxxxxxx)
Date: Sun May 26 2002 - 18:50:27 GMT-3
Michael,
For your Question 1, I always specify NTP broadcast on each VLAN and don't
know of a global command to broadcast NTP on all VLANs. Please let me know
if you find one.
For your Question 2 ... Frame Relay subinterfaces. First, change your "int
serial 0.1" to either "int serial 0.1 point-to-point" or "int serial 0.1
multipoint". Then you have to map your layer 2 to layer 3 addresses. If
you chose "int serial 0.1 point-to-point", add "frame-relay interface-dlci
201" (of course, change 201 to that router's DLCI); if your chose "int ser
0.1 multipoint" add:
frame-relay map ip 10.1.1.1 201 broadcast
frame-relay map ip 10.1.1.2 201 broadcast
no frame-relay inarp
Since it's multipoint, you may have several routers in your subnet (of
course, larger than /30); if so, you'll also need to map those ip addresses:
frame-relay map ip 10.1.1.3 203 broadcast
frame-relay map ip 10.1.1.4 204 broadcast
If you also pass IPX traffic, you will need additional map statements:
frame-relay map ipx 25.1.1.1 201 broadcast
frame-relay map ipx 25.2.2.2 201 broadcast
frame-relay map ipx 25.3.3.3 203 broadcast
frame-relay map ipx 25.4.4.4 204 broadcast
If you also pass bridged or DLSW traffic, you will need those specific map
statements.
Recommend you search for "configuring frame-relay subinterfaces" on
www.cisco.com
HTH, Kym
>From: "Michael Snyder" <msnyder@ldd.net>
>Reply-To: "Michael Snyder" <msnyder@ldd.net>
>To: <ccielab@groupstudy.com>
>Subject: Two Questions. One about NTP on Cat 5002 and One about HDLC
>subinterfaces.
>Date: Sun, 26 May 2002 10:04:44 -0500
>
>Question One.
>
>First a little background on how my lab is setup. The core of my lab is
>seven 2500 routers and a Cat 5002. At this time, I'm not using
>timestamps in my debug messages, mainly because non-sync'ed messages
>don't help much. Instead I use the sequence-number service.
>
>No service timestamps debug
>No service timestamps log
>Service sequence-numbers
>
>Also, I never write configs to my routers. They have a default config
>(mainly alias and clock rate commands). After each lab I simply reload
>or power cycle the routers and start on the new lab.
>
>Now my question, I have noticed that the Cat has a very good clock, and
>also has a set of ntp commands. I know it's a good clock because I
>bought the chassis damaged, after it had set a shelf for 6 months.
>After I repaired the chassis and booted it up. It had the right time
>and date to the minute.
>
>Is there a easy way to tell the 5002 to broadcast ntp to every vlan? I
>change vlans often, and would like a general command to tell the 5002,
>if it's a vlan, then it should broadcast time on it.
>
>On the client side, adding 'ntp broadcast client' to my default configs
>would be pretty easy.
>
>
>
>Question Two.
>
>I use very plain serial configs with back to back cables often.
>
>Example.
>
>Int serial 0
>Clock rate 56000
>Ip address 10.1.1.1 255.255.255.252
>No shut
>
>
>Which I never have a problem with. The other day, after doing some
>frame-relay, I thought it would be handy to start using subinterfaces on
>my back to back connections.
>
>
>Int serial 0
>Clock rate 56000
>No shut
>
>Int serial 0.1
>Ip address 10.1.1.1 255.255.255.252
>
>
>The router didn't give me any errors, but It wouldn't ping the opposing
>serial 0.1 interface for anything. The 'show ip int brie' command showed
>up and up. I reverted back to my normal config, and it worked fine.
>
>Question, why? Won't hdlc support subinterfaces in this matter? If
>not, why didn't it give any error messages?
>
>
>The reason I tried to do this, is I was thinking of using serial x.1
>interfaces for IP and serial x.2 interfaces of IPX. Figured it would
>help with the reading the configs, etc.
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