Re: BGP Unable to form Neighbor - Hold time expired

From: Shahid Ansari (shahid1357@gmail.com)
Date: Thu Oct 23 2008 - 10:52:21 ARST


can you post
sh frame-relay map for R4 ,R5
ands traceroute from R4 to R5 .

On Thu, Oct 23, 2008 at 3:24 PM, Mahesh Shivaswamy
<maheshs.cisco@gmail.com>wrote:

> R3 is having the right PVC established to R5 & the mapping are right too.
> Why would R3 reach R5 via R4 ??
>
> R3#sh frame-relay pvc 305
>
> PVC Statistics for interface Serial1/0 (Frame Relay DTE)
>
> DLCI = 305, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0
>
> input pkts 1410 output pkts 639 in bytes 157434
> out bytes 58184 dropped pkts 0 in pkts dropped
> 0
> out pkts dropped 0 out bytes dropped 0
> in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
>
> out BECN pkts 0 in DE pkts 0 out DE pkts 0
> out bcast pkts 0 out bcast bytes 0
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> pvc create time 04:31:31, last time pvc status changed 04:31:31
>
> R3#sh frame-relay map
> Serial1/0 (up): ip 154.1.0.4 dlci 304(0x130,0x4C00), static,
> IETF, status defined, active
> Serial1/0 (up): ip 154.1.0.5 dlci 305(0x131,0x4C10), static,
> IETF, status defined, active
>
> rgds
> Mahesh
>
>
> On Thu, Oct 23, 2008 at 7:19 AM, Mahesh Shivaswamy <
> maheshs.cisco@gmail.com> wrote:
>
>> Hi Kavitha,
>>
>> I am wondering why is 154.1.0.5 reaching through R4, R3 has a direct
>> mapping statement to R5.
>>
>> R3#sh run int s1/0
>> Building configuration...
>>
>> Current configuration : 270 bytes
>> !
>> interface Serial1/0
>> ip address 154.1.0.3 255.255.255.0
>> encapsulation frame-relay IETF
>> ip ospf network point-to-multipoint non-broadcast
>> frame-relay map ip 154.1.0.4 304
>> frame-relay map ip 154.1.0.5 305
>> no frame-relay inverse-arp
>> frame-relay lmi-type cisco
>> end
>>
>> rgds
>> Mahesh
>>
>>
>> On Thu, Oct 23, 2008 at 3:34 AM, Kavitha N (nkavitha) <nkavitha@cisco.com
>> > wrote:
>>
>>> Hi Mahesh
>>>
>>> I checked ur setup and noticed that trace from R3 to R5 is two hops
>>> away..
>>>
>>> Hence , the bgp is not working.. So we need to add ebgp multihop and its
>>> working fine now..
>>>
>>> R3#traceroute 154.1.0.5
>>>
>>> Type escape sequence to abort.
>>> Tracing the route to 154.1.0.5
>>>
>>> 1 154.1.0.4 12 msec 16 msec 12 msec
>>> 2 154.1.45.5 16 msec * 12 msec
>>> R3#
>>>
>>>
>>> R3#
>>> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
>>> State/PfxRcd
>>> 154.1.0.4 4 400 317 331 16 0 0 00:41:45
>>> 0
>>> 154.1.0.5 4 400 133 278 16 0 0 00:41:45
>>> 0
>>>
>>>
>>> Best regards,
>>> Kavitha
>>> -----Original Message-----
>>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>>> Mahesh Shivaswamy
>>> Sent: Thursday, October 23, 2008 11:01 AM
>>> To: Shahid Ansari
>>> Cc: Hobbs; ccielab@groupstudy.com
>>> Subject: Re: BGP Unable to form Neighbor - Hold time expired
>>>
>>> its not an L2 issue,
>>>
>>> R3#pi 154.1.0.5
>>>
>>> Type escape sequence to abort.
>>> Sending 5, 100-byte ICMP Echos to 154.1.0.5, timeout is 2 seconds:
>>> !!!!!
>>> Success rate is 100 percent (5/5), round-trip min/avg/max = 28/30/32 ms
>>> R3#pi Protocol [ip]:
>>> Target IP address: 154.1.0.5
>>> Repeat count [5]: 500
>>> Datagram size [100]:
>>> Timeout in seconds [2]:
>>> Extended commands [n]:
>>> Sweep range of sizes [n]:
>>> Type escape sequence to abort.
>>> Sending 500, 100-byte ICMP Echos to 154.1.0.5, timeout is 2 seconds:
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
>>> !!!!!!!!!!
>>> Success rate is 100 percent (500/500), round-trip min/avg/max = 28/29/36
>>> ms R3#debu ip bgp BGP debugging is on for address family: IPv4 Unicast
>>> R3#cle R3#clear ip bgp 154.1.0.5 R3# *May 4 12:02:29.791: BGPNSF state:
>>> 154.1.0.5 went from nsf_not_active to nsf_not_active *May 4
>>> 12:02:29.791: BGP: 154.1.0.5 went from OpenConfirm to Idle *May 4
>>> 12:02:29.791: BGP: 154.1.0.5 closing *May 4 12:02:29.791: BGP:
>>> 154.1.0.5 went from Idle to Active *May 4 12:02:29.791: BGP: 154.1.0.5
>>> open active delayed 33844ms (35000ms max, 28% jitter)
>>>
>>> R3#
>>> *May 4 12:04:04.067: BGP: 154.1.0.5 open active, local address
>>> 154.1.0.3 R3# *May 4 12:04:34.067: BGP: 154.1.0.5 open failed:
>>> Connection timed out; remote host not responding, open active delayed
>>> 27215ms (35000ms max, 28%
>>> jitter)
>>> R3#
>>> *May 4 12:04:50.039: BGP: 154.1.0.5 passive open to 154.1.0.3 *May 4
>>> 12:04:50.039: BGP: 154.1.0.5 went from Active to Idle *May 4
>>> 12:04:50.039: BGP: 154.1.0.5 went from Idle to Connect *May 4
>>> 12:04:50.051: BGP: 154.1.0.5 rcv message type 1, length (excl.
>>> header) 26
>>> *May 4 12:04:50.051: BGP: 154.1.0.5 rcv OPEN, version 4, holdtime 180
>>> seconds *May 4 12:04:50.051: BGP: 154.1.0.5 went from Connect to
>>> OpenSent *May 4 12:04:50.051: BGP: 154.1.0.5 sending OPEN, version 4,
>>> my as: 300, holdtime 180 seconds *May 4 12:04:50.051: BGP: 154.1.0.5
>>> rcv OPEN w/ OPTION parameter len: 16 *May 4 12:04:50.051: BGP:
>>> 154.1.0.5 rcvd OPEN w/ optional parameter type 2
>>> (Capability) len 6
>>> *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has CAPABILITY code: 1, length
>>> 4 *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has MP_EXT CAP for afi/safi:
>>> 1/1 *May 4 12:04:50.051: BGP: 154.1.0.5 rcvd OPEN w/ optional parameter
>>> type 2
>>> (Capability) len 2
>>> *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has CAPABILITY cod
>>> R3#e: 128, length 0
>>> *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has ROUTE-REFRESH
>>> capability(old) for all address-families *May 4 12:04:50.051: BGP:
>>> 154.1.0.5 rcvd OPEN w/ optional parameter type 2
>>> (Capability) len 2
>>> *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has CAPABILITY code: 2, length
>>> 0 *May 4 12:04:50.051: BGP: 154.1.0.5 OPEN has ROUTE-REFRESH
>>> capability(new) for all address-families
>>> BGP: 154.1.0.5 rcvd OPEN w/ remote AS 400 *May 4 12:04:50.051: BGP:
>>> 154.1.0.5 went from OpenSent to OpenConfirm *May 4 12:04:50.051: BGP:
>>> 154.1.0.5 send message type 1, length (incl.
>>> header) 45
>>>
>>> rgds
>>> Mahesh
>>>
>>> On Thu, Oct 23, 2008 at 12:05 AM, Shahid Ansari
>>> <shahid1357@gmail.com>wrote:
>>>
>>> > Hi Mahesh ,
>>> >
>>> > I think there is problem in basic ip connectivity might be due to bad
>>> > cable on R5.
>>> > can you check sh interface on R5 .Check layer two encapsulation
>>> > completion .
>>> >
>>> > post us debug ip bgp if L2 is Up .
>>> >
>>> > --
>>> > Regards,
>>> >
>>> > Shahid Ansari
>>> > Saudi Arabia(Riyadh)
>>> >
>>> >
>>> > On Thu, Oct 23, 2008 at 6:07 AM, Mahesh Shivaswamy <
>>> > maheshs.cisco@gmail.com> wrote:
>>> >
>>> >> These are real labs, I get the following error after debugging
>>> >> keepalives
>>> >>
>>> >> R3#
>>> >> *May 4 09:42:59.072: BGP: 154.1.13.1 sending KEEPALIVE (io) R3# *May
>>>
>>> >> 4 09:43:02.332: BGP: 154.1.38.8 received KEEPALIVE, length (excl.
>>> >> header) 0
>>> >> *May 4 09:43:03.072: BGP: 154.1.38.8 sending KEEPALIVE (io) R3# *May
>>>
>>> >> 4 09:43:22.072: BGP: 154.1.0.4 sending KEEPALIVE (io) *May 4
>>> >> 09:43:22.092: BGP: 154.1.0.4 received KEEPALIVE, length (excl.
>>> >> header) 0
>>> >> R3#
>>> >> *May 4 09:43:57.948: BGP: 154.1.23.2 sending KEEPALIVE (io) *May 4
>>> >> 09:43:57.948: BGP: 154.1.13.1 received KEEPALIVE, length (excl.
>>> >> header) 0
>>> >> *May 4 09:43:57.960: BGP: 154.1.23.2 received KEEPALIVE, length
>>> (excl.
>>> >> header) 0
>>> >> R3#
>>> >> *May 4 09:43:59.072: BGP: 154.1.13.1 sending KEEPALIVE (io) R3# *May
>>>
>>> >> 4 09:44:02.344: BGP: 154.1.38.8 received KEEPALIVE, length (excl.
>>> >> header) 0
>>> >> *May 4 09:44:03.072: BGP: 154.1.38.8 sending KEEPALIVE (io) R3# *May
>>>
>>> >> 4 09:44:22.072: BGP: 154.1.0.4 sending KEEPALIVE (io) *May 4
>>> >> 09:44:22.092: BGP: 154.1.0.4 received KEEPALIVE, length (excl.
>>> >> header) 0
>>> >>
>>> >> On Wed, Oct 22, 2008 at 10:03 PM, Hobbs <deadheadblues@gmail.com>
>>> wrote:
>>> >>
>>> >> > Is this dynamips or real lab? I get this in dynamips sometimes a
>>> >> > few
>>> >> hours
>>> >> > into a big lab. also try this :
>>> >> >
>>> >> > debug ip bgp keepalive
>>> >> >
>>> >> > On Wed, Oct 22, 2008 at 8:42 PM, Mahesh Shivaswamy <
>>> >> > maheshs.cisco@gmail.com> wrote:
>>> >> >
>>> >> >> Hi,
>>> >> >>
>>> >> >> I have a FR P-M interface on R3 connecting to R4 & R5, R3
>>> >> >> establishes
>>> >> BGP
>>> >> >> connection to R4 but R3 -> R5 is getting hold time expired
>>> >> >> message, no luck with google,
>>> >> >>
>>> >> >>
>>> >> >> R3#sh run | in nei
>>> >> >> neighbor 154.1.0.4 remote-as 400
>>> >> >> neighbor 154.1.0.5 remote-as 400
>>> >> >>
>>> >> >>
>>> >> >> R3#sh ip bgp s | be Neighbor
>>> >> >> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
>>> >> >> State/PfxRcd
>>> >> >> 154.1.0.4 4 400 155 169 16 0 0
>>> 00:34:19
>>> >> >> 0
>>> >> >> 154.1.0.5 4 400 54 134 0 0 0
>>> 00:30:33
>>> >> >> OpenConfirm
>>> >> >>
>>> >> >>
>>> >> >> R4#sh run | in nei
>>> >> >> neighbor 154.1.0.3 remote-as 300
>>> >> >>
>>> >> >> R4#sh ip bgp s | be Neighbor
>>> >> >> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
>>> >> >> State/PfxRcd
>>> >> >> 154.1.0.3 4 300 51 46 16 0 0
>>> 00:42:51
>>> >> >> 15
>>> >> >>
>>> >> >>
>>> >> >> R5#sh run | in nei
>>> >> >> bgp log-neighbor-changes
>>> >> >> neighbor 154.1.0.3 remote-as 300
>>> >> >>
>>> >> >> R5#sh ip bgp s | be Neighbor
>>> >> >> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
>>> >> >> State/PfxRcd
>>> >> >> 154.1.0.3 4 300 16 92 0 0 0
>>> 00:29:52
>>> >> >> OpenSent
>>> >> >>
>>> >> >> R3#%BGP-3-NOTIFICATION: sent to neighbor 154.1.0.5 4/0 (hold time
>>> >> >> expired) 0
>>> >> >> bytes
>>> >> >>
>>> >> >> any info will be helpful...
>>> >> >>
>>> >> >> rgds
>>> >> >> Mahesh
>>> >> >>
>>> >> >>
>>> >> >> Blogs and organic groups at http://www.ccie.net
>>> >> >>
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>>
>

-- 
Regards,

Shahid Ansari Saudi Arabia(Riyadh)

Blogs and organic groups at http://www.ccie.net



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