From: Scott Morris (swm@emanon.com)
Date: Wed May 31 2006 - 21:46:59 ART
That WOULD be bizarre. I thought that things like keepalives and LMI were
classified in that pak-priority concept where they were really excluded from
any of the normal queuing mentality that occurred.
*shrug* Stranger things have happened!
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Marvin Greenlee
Sent: Wednesday, May 31, 2006 7:45 PM
To: Petr Lapukhov; Schulz, Dave
Cc: Chris Lewis; Koen Zeilstra; ccielab@groupstudy.com
Subject: Re: frame-relay fragment & exclude voice pakkets from being
fragmented
I've seen some strange things when doing "match not"
for an ACL on a Frame interface. I don't remember if it was the keepalive
or LMI that it messed up, but I've seen it take interfaces down.
--- Petr Lapukhov <petrsoft@gmail.com> wrote:
> Dave, this is strange :)
>
> just labbed your config:
>
> --------------
>
> access-list 100 permit icmp any any
>
> class-map match-all NO_VOICE
> match not access-group 100
>
> policy-map FRAGMENT
> class NO_VOICE
>
> map-class frame-relay FRAG
> service-policy output FRAGMENT
> frame-relay fragment 40
>
> interface Serial0/1
> description == Frame-Relay
> ip address 172.16.13.1 255.255.255.0
> encapsulation frame-relay
> frame-relay class FRAG
> frame-relay traffic-shaping
> frame-relay map ip 172.16.13.3 103 broadcast no frame-relay
> inverse-arp
>
> -----------
>
> now, some show outputs:
>
> R1#show policy-map interface serial 0/1 dlci 103
> Serial0/1: DLCI 103 -
>
> Service-policy output: FRAGMENT
>
> Class-map: NO_VOICE (match-all)
> 168 packets, 13525 bytes
> 5 minute offered rate 0 bps
> Match: not access-group 100
>
> Class-map: class-default (match-any)
> 13 packets, 1332 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: any
>
> R1#show interfaces serial 0/1 | inc Output queue
> Output queue: high size/max/dropped 0/256/0
> Output queue: 0/128 (size/max)
>
> R1#show frame-relay fragment | inc interf|103
> interface dlci frag-type size
> in-frag out-frag
> dropped-frag
> Se0/1 103 end-to-end 40 0
> 345 0
>
> R1#debug frame-relay fragment interface serial 0/1
> 103
> This may severely impact network performance.
> You are advised to enable 'no logging console debug'.
> Continue?[confirm] Frame Relay fragment/packet debugging is on
> Displaying fragments/packets on interface Serial0/1 dlci 103 only
>
> R1#ping 172.16.13.3 size ?
> <36-18024> Datagram size
>
> R1#ping 172.16.13.3 size 36
>
> Type escape sequence to abort.
> Sending 5, 36-byte ICMP Echos to 10.10.13.3, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 12/14/16
> ms
>
> R1#ping 172.16.13.3 size 100
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 10.10.13.3, timeout is 2 seconds:
>
> *May 17 10:42:52.670: Serial0/1(o): dlci 103, tx-seq-num 458, B bit
> set, frag_hdr 03 B1 82 CA *May 17 10:42:52.670: Serial0/1(o): dlci
> 103, tx-seq-num 459, no bit set, frag_hdr 03 B1 02 CB *May 17
> 10:42:52.670: Serial0/1(o): dlci 103, tx-seq-num 460, E bit set,
> frag_hdr 03 B1 42 CC .
> *May 17 10:42:54.670: Serial0/1(o): dlci 103, tx-seq-num 461, B bit
> set, frag_hdr 03 B1 82 CD *May 17 10:42:54.670: Serial0/1(o): dlci
> 103, tx-seq-num 462, no bit set, frag_hdr 03 B1 02 CE *May 17
> 10:42:54.670: Serial0/1(o): dlci 103, tx-seq-num 463, E bit set,
> frag_hdr 03 B1 42 CF .
> *May 17 10:42:56.670: Serial0/1(o): dlci 103, tx-seq-num 464, B bit
> set, frag_hdr 03 B1 82 D0 *May 17 10:42:56.670: Serial0/1(o): dlci
> 103, tx-seq-num 465, no bit set, frag_hdr 03 B1 02 D1 *May 17
> 10:42:56.670: Serial0/1(o): dlci 103, tx-seq-num 466, E bit set,
> frag_hdr 03 B1 42 D2 .
> *May 17 10:42:58.670: Serial0/1(o): dlci 103, tx-seq-num 467, B bit
> set, frag_hdr 03 B1 82 D3 *May 17 10:42:58.670: Serial0/1(o): dlci
> 103, tx-seq-num 468, no bit set, frag_hdr 03 B1 02 D4 *May 17
> 10:42:58.670: Serial0/1(o): dlci 103, tx-seq-num 469, E bit set,
> frag_hdr 03 B1 42 D5 .
> *May 17 10:43:00.670: Serial0/1(o): dlci 103, tx-seq-num 470, B bit
> set, frag_hdr 03 B1 82 D6 *May 17 10:43:00.670: Serial0/1(o): dlci
> 103, tx-seq-num 471, no bit set, frag_hdr 03 B1 02 D7 *May 17
> 10:43:00.670: Serial0/1(o): dlci 103, tx-seq-num 472, E bit set,
> frag_hdr 03 B1 42 D8 .
> Success rate is 0 percent (0/5)
>
> Petr
>
>
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