David is correct. The atm clock internal is only required on one end. I
looked at the AIP documentation to reply to the first e-mail. That shows
clock on both ends. In response to David's reply I looked at a config on a
production network. Clocking one end is correct.
Regarding pinging one's own interface. Think Frame Relay not Serial links.
> -----Original Message-----
> From: David Chandler [mailto:[EMAIL PROTECTED]]
> Sent: Saturday, September 27, 1997 12:35 PM
> To: Daniel Cotts
> Subject: Re: ATM int are up, unable to ping. [7:5901]
>
>
> Questions:
>
> 1. Isn't the atm clock internal applied to just one router
> which intern
> will provide clock to the other?
>
> 2. If you do internal clocking on both ends would you not get
> some clock
> slips? (intermitently atleast)
>
> 3. Why would an ATM interface be different than other type serial
> interafaces with regard to the pings.
> ie: the remote router basically replys for the local routers serial ip
> address.
> I'm afraid I don't remember what mechanism is used so that a
> router can
> ping it's own serial interface.
>
>
> Sorry if this is nit-picking.
> TIA
>
> DaveC
>
>
> Daniel Cotts wrote:
> >
> > Add a "atm clock internal" to each interface.
> > I'm not familiar with your encapsulation method. If the
> above doesn't work
> > try changing to aal5snap.
> > You will not be able to ping your local interface unless
> you also create a
> > map statement for it. When you have this up and running
> then try doing
> > subinterfaces. You could have one large map-list or you
> could create a
> > map-list for each subinterface. More typing but much easier
> to troubleshoot
> > several months later.
> >
> > > -----Original Message-----
> > > From: Deloso, Elmer G (WPNSTA Yorktown)
> > > [mailto:[EMAIL PROTECTED]]
> > > Sent: Friday, May 25, 2001 9:21 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: ATM int are up, unable to ping. [7:5901]
> > >
> > >
> > > Hi, everyone.
> > > I've just installed a single-mode ATM module on each of my
> > > 4500's, both
> > > routers recognize the card. I configure them as shown below,
> > > however I can't
> > > ping even the local ATM interface even though it shows as
> > > being up. I also
> > > icluded the debug output. Please tell me what's not
> right. Thanks in
> > > advance.
> > > Elmer Deloso
> > >
> > > RouterA#ping 195.1.1.1
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 195.1.1.1, timeout is 2 seconds:
> > > .....
> > > Success rate is 0 percent (0/5)
> > > RouterA#ping 195.1.1.2
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 195.1.1.2, timeout is 2 seconds:
> > > .....
> > > Success rate is 0 percent (0/5)
> > > RouterA#sh run
> > > Building configuration...
> > > Current configuration:
> > > !
> > > version 11.3
> > > service timestamps debug uptime
> > > service timestamps log uptime
> > > no service password-encryption
> > > !
> > > hostname RouterA
> > > !
> > > !
> > > !
> > > !
> > > interface Ethernet0
> > > no ip address
> > > shutdown
> > > media-type 10BaseT
> > > !
> > > interface Ethernet1
> > > no ip address
> > > shutdown
> > > media-type 10BaseT
> > > !
> > > interface Serial0
> > > no ip address
> > > no ip mroute-cache
> > > shutdown
> > > no fair-queue
> > > !
> > > interface Serial1
> > > no ip address
> > > shutdown
> > > !
> > > interface ATM0
> > > ip address 195.1.1.2 255.255.255.0
> > > atm max-paks-vc 40
> > > atm pvc 1 0 32 aal5nlpid
> > > map-group 1
> > > !
> > > no ip classless
> > > !
> > > !
> > > map-list 1
> > > ip 195.1.1.1 atm-vc 1 broadcast
> > > !
> > > line con 0
> > > line aux 0
> > > line vty 0 4
> > > login
> > > !
> > > end
> > > RouterA#sh ver
> > > Cisco Internetwork Operating System Software
> > > IOS (tm) 4500 Software (C4500-IS-M), Version 11.3(11b),
> > > RELEASE SOFTWARE
> > > (fc1)
> > > Copyright (c) 1986-2001 by cisco Systems, Inc.
> > > Compiled Fri 02-Mar-01 14:28 by cmong
> > > Image text-base: 0x60008930, data-base: 0x60780000
> > > ROM: System Bootstrap, Version 5.3(16) [richardd 16], RELEASE
> > > SOFTWARE (fc1)
> > >
> > > BOOTFLASH: 4500 Software (C4500-BOOT-M), Version 11.1(7),
> > > RELEASE SOFTWARE
> > > (fc2)
> > > RouterA uptime is 6 minutes
> > > System restarted by reload
> > > System image file is "flash:c4500-is-mz.113-11b.bin", booted
> > > via flash
> > > cisco 4500 (R4K) processor (revision B) with 16384K/4096K
> > > bytes of memory.
> > > Processor board ID 03454024
> > > R4700 processor, Implementation 33, Revision 1.0
> > > G.703/E1 software, Version 1.0.
> > > Bridging software.
> > > X.25 software, Version 3.0.0.
> > > 2 Ethernet/IEEE 802.3 interface(s)
> > > 2 Serial network interface(s)
> > > 1 ATM network interface(s)
> > > 128K bytes of non-volatile configuration memory.
> > > 4096K bytes of processor board System flash (Read/Write)
> > > 4096K bytes of processor board Boot flash (Read/Write)
> > > Configuration register is 0x2102
> > > RouterA#sh int atm0
> > > ATM0 is up, line protocol is up
> > > Hardware is ATMizer BX-50
> > > Internet address is 195.1.1.2/24
> > > MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit, DLY 100 usec,
> > > reliability 13/255, txload 1/255, rxload 1/255
> > > Encapsulation ATM, loopback not set, keepalive not supported
> > > Encapsulation(s): AAL5 AAL3/4, PVC mode
> > > 1024 maximum active VCs, 1024 VCs per VP, 1 current VCCs
> > > VC idle disconnect time: 300 seconds
> > > Last input never, output 00:01:04, output hang never
> > > Last clearing of "show interface" counters never
> > > Queueing strategy: fifo
> > > Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> > > 5 minute input rate 0 bits/sec, 0 packets/sec
> > > 5 minute output rate 0 bits/sec, 0 packets/sec
> > > 0 packets input, 0 bytes, 0 no buffer
> > > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
> > > 3 input errors, 3 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> > > 5 packets output, 530 bytes, 0 underruns
> > > 0 output errors, 0 collisions, 1 interface resets
> > > 0 output buffer failures, 0 output buffers swapped out
> > > RouterA#sh atm vc
> > > AAL / Peak Avg. Burst
> > > Interface VCD VPI VCI Type Encapsulation Kbps Kbps Cells
> > > Status
> > > 0 1 0 32 PVC AAL5-NLPID 155000 155000 95 ACT
> > > RouterB#sh run
> > > Building configuration...
> > > Current configuration:
> > > !
> > > version 11.3
> > > service timestamps debug uptime
> > > service timestamps log uptime
> > > no service password-encryption
> > > !
> > > hostname RouterB
> > > !
> > > !
> > > !
> > > !
> > > interface Ethernet0
> > > no ip address
> > > shutdown
> > > media-type 10BaseT
> > > !
> > > interface Ethernet1
> > > no ip address
> > > shutdown
> > > media-type 10BaseT
> > > !
> > > interface Serial0
> > > no ip address
> > > no ip mroute-cache
> > > shutdown
> > > no fair-queue
> > > !
> > > interface Serial1
> > > no ip address
> > > shutdown
> > > !
> > > interface Serial2
> > > no ip address
> > > shutdown
> > > !
> > > interface Serial3
> > > no ip address
> > > shutdown
> > > !
> > > interface ATM0
> > > ip address 195.1.1.1 255.255.255.0
> > > atm max-paks-vc 40
> > > atm pvc 1 0 32 aal5nlpid
> > > map-group 1
> > > !
> > > no ip classless
> > > !
> > > !
> > > map-list 1
> > > ip 195.1.1.2 atm-vc 1 broadcast
> > > !
> > > line con 0
> > > line aux 0
> > > line vty 0 4
> > > login
> > > !
> > > end
> > > RouterB#sh ver
> > > Cisco Internetwork Operating System Software
> > > IOS (tm) 4500 Software (C4500-IS-M), Version 11.3(11b),
> > > RELEASE SOFTWARE
> > > (fc1)
> > > Copyright (c) 1986-2001 by cisco Systems, Inc.
> > > Compiled Fri 02-Mar-01 14:28 by cmong
> > > Image text-base: 0x60008930, data-base: 0x60780000
> > > ROM: System Bootstrap, Version 5.2(7b) [mkamson 7b], RELEASE
> > > SOFTWARE (fc1)
> > > BOOTFLASH: 4500 Bootstrap Software (C4500-BOOT-M), Version
> > > 10.3(7), RELEASE
> > > SOFTWARE (fc1)
> > > RouterB uptime is 11 minutes
> > > System restarted by reload
> > > System image file is "flash:c4500-is-mz.113-11b.bin", booted
> > > via flash
> > > cisco 4500 (R4K) processor (revision B) with 16384K/4096K
> > > bytes of memory.
> > > Processor board ID 03421072
> > > R4700 processor, Implementation 33, Revision 1.0
> > > G.703/E1 software, Version 1.0.
> > > Bridging software.
> > > X.25 software, Version 3.0.0.
> > > 2 Ethernet/IEEE 802.3 interface(s)
> > > 4 Serial network interface(s)
> > > 1 ATM network interface(s)
> > > 128K bytes of non-volatile configuration memory.
> > > 4096K bytes of processor board System flash (Read/Write)
> > > 4096K bytes of processor board Boot flash (Read/Write)
> > > Configuration register is 0x2102
> > > RouterB#sh int atm0
> > > ATM0 is up, line protocol is up
> > > Hardware is ATMizer BX-50
> > > Internet address is 195.1.1.1/24
> > > MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit, DLY 100 usec,
> > > reliability 0/255, txload 1/255, rxload 1/255
> > > Encapsulation ATM, loopback not set, keepalive not supported
> > > Encapsulation(s): AAL5 AAL3/4, PVC mode
> > > 1024 maximum active VCs, 1024 VCs per VP, 1 current VCCs
> > > VC idle disconnect time: 300 seconds
> > > Last input never, output never, output hang never
> > > Last clearing of "show interface" counters never
> > > Queueing strategy: fifo
> > > Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> > > 5 minute input rate 0 bits/sec, 0 packets/sec
> > > 5 minute output rate 0 bits/sec, 0 packets/sec
> > > 0 packets input, 0 bytes, 0 no buffer
> > > Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
> > > 111 input errors, 111 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> > > 0 packets output, 0 bytes, 0 underruns
> > > 0 output errors, 0 collisions, 1 interface resets
> > > 0 output buffer failures, 0 output buffers swapped out
> > > RouterB#sh atm vc
> > > AAL / Peak Avg. Burst
> > > Interface VCD VPI VCI Type Encapsulation Kbps Kbps Cells Status
> > > 0 1 0 32 PVC AAL5-NLPID 155000 155000 95 ACT
> > > RouterB#ping 195.1.1.1
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 195.1.1.1, timeout is 2 seconds:
> > > .
> > > 00:12:43: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> > > ATM0, changed
> > > state to down
> > > 00:12:44: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> > > ATM0, changed
> > > state to up....
> > > Success rate is 0 percent (0/5)
> > > RouterB#ping 195.1.1.2
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 195.1.1.2, timeout is 2 seconds:
> > > .....
> > > Success rate is 0 percent (0/5)
> > >
> > > Here's the debug output when I do a ping...
> > > RouterA#debug atm packet
> > > RouterA#ping 195.1.1.1
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 195.1.1.1, timeout is 2 seconds:
> > > 00:20:29: ATM0(O):
> > > VCD:0x1 DM:0x100 NLPID:0x03CC Length:0x6A
> > > 00:20:29: 4500 0064 0005 0000 FF01 338E C301 0102 C301 0101
> > > 0800 7C2A 2625
> > > 1974 0000
> > > 00:20:29: 0000 0012 C274 ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:29: ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:29: .
> > > 00:20:31: ATM0(O):
> > > VCD:0x1 DM:0x100 NLPID:0x03CC Length:0x6A
> > > 00:20:31: 4500 0064 0006 0000 FF01 338D C301 0102 C301 0101
> > > 0800 7459 2626
> > > 1974 0000
> > > 00:20:31: 0000 0012 CA44 ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:31: ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:31: .
> > > 00:20:33: ATM0(O):
> > > VCD:0x1 DM:0x100 NLPID:0x03CC Length:0x6A
> > > 00:20:33: 4500 0064 0007 0000 FF01 338C C301 0102 C301 0101
> > > 0800 6C88 2627
> > > 1974 0000
> > > 00:20:33: 0000 0012 D214 ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:33: ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:33: .
> > > 00:20:35: ATM0(O):
> > > VCD:0x1 DM:0x100 NLPID:0x03CC Length:0x6A
> > > 00:20:35: 4500 0064 0008 0000 FF01 338B C301 0102 C301 0101
> > > 0800 64B7 2628
> > > 1974 0000
> > > 00:20:35: 0000 0012 D9E4 ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:35: ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:35: .
> > > 00:20:37: ATM0(O):
> > > VCD:0x1 DM:0x100 NLPID:0x03CC Length:0x6A
> > > 00:20:37: 4500 0064 0009 0000 FF01 338A C301 0102 C301 0101
> > > 0800 5CE6 2629
> > > 1974 0000
> > > 00:20:37: 0000 0012 E1B4 ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:37: ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
> > > ABCD ABCD ABCD
> > > ABCD ABCD
> > > 00:20:37: .
> > > Success rate is 0 percent (0/5)
> > > RouterA#undebug atm packet
> > > I also notice that the atm link flaps like this...
> > > 00:15:09: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> > > ATM0, changed
> > > state to down
> > > 00:15:10: %LINEPROTO-5-UPDOWN: Line protocol on Interface
> > > ATM0, changed
> > > state to up
> > > FAQ, list archives, and subscription info:
> > > http://www.groupstudy.com/list/cisco.html
> > > Report misconduct
> > > and Nondisclosure violations to [EMAIL PROTECTED]
> > FAQ, list archives, and subscription info:
> http://www.groupstudy.com/list/cisco.html
> > Report misconduct
> and Nondisclosure violations to [EMAIL PROTECTED]
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