Friday, February 24, 2012

LAB 1 Link Frag plus Link efficiency

Multiple serial point to pint links can be bundled together with the multilink functionlity. Like an etherchannel for serial links.

with point to point frame relay  the syntax is for the interface dlci to join a 'virtual - template'. This in turn joins the multilink group.

Also implemented via the multink group is QOS functionality

 4.1 Link Fragmentation & Efficiency

interface Serial0/2.231 point-to-point
  no ip unnumbered
  no bandwidth 128
  no frame-relay interface-dlci 231
  frame-relay interface-dlci 231 ppp Virtual-Template 1

interface Virtual-Template1
 ppp multilink group 1

multilink bundle-name endpoint

interface Multilink1
 ip unnumbered FastEthernet0/1.11
 bandwidth 128
 ppp multilink
 ppp multilink endpoint ip
 ppp multilink fragment delay 8
 ppp multilink group 1
 ppp multilink interleave
!!!! watch out !!!! need to take of the pre-existing frame-relay interface-dlci command and then reapply with ppp virtual-template1 or it will  NOT take hod.

bandlink must be on multilink interface.

show ppp multilink

Multilink1, bundle name is
  Endpoint discriminator is
  Bundle up for 00:22:27, total bandwidth 100000, load 1/255
  Receive buffer limit 12000 bytes, frag timeout 1000 ms
    0/0 fragments/bytes in reassembly list
    0 lost fragments, 0 reordered
    0/0 discarded fragments/bytes, 0 lost received
    0x113 received sequence, 0x170 sent sequence
  Member links: 1 active, 1 inactive (max not set, min not set)
    Vi1, since 00:22:28, 100000 weight, 1496 frag size
    Vt1 (inactive)
No inactive multilink interfaces


interface Serial0/2.231 point-to-point
  ip unnumbered fa0/1.11
  no bandwidth 128
  frame-relay interface-dlci 231
  no frame-relay interface-dlci 231 ppp Virtual-Template 1

no mu1
no virtual-template 1

if doing this sction out of sequence on R1 then the need put put back

int mu1
needs service-policy-output PARENT
ip rsvp bandwidth 64 64

4.2 link efficiency

access-list 101 permit udp any any range 16384 32767

class-map match-all VOIP
 match access-group 101
 match ip precedence 5

policy-map GRANULAR
class VOIP
priority 45

policy-map PARENT
class class-default
shape average 128000 8000 1000
service-policy GRANULAR

int mu1
service-policy output PARENT

R1(config-if)#service-policy output PARENT
*May 31 12:31:58.975: %SYS-5-CONFIG_I: Configured from console by console
R1#show policy-map int mu1

  Service-policy output: PARENT

    Class-map: class-default (match-any)
      4 packets, 307 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
      Traffic Shaping
           Target/Average   Byte   Sustain   Excess    Interval  Increment
             Rate           Limit  bits/int  bits/int  (ms)      (bytes)
           128000/128000    1125   8000      1000      62        1000

        Adapt  Queue     Packets   Bytes     Packets   Bytes     Shaping
        Active Depth                         Delayed   Delayed   Active
        -      0         4         307       0         0         no

      Service-policy : GRANULAR

        Class-map: VOIP (match-all)
          0 packets, 0 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: access-group 101
          Match: ip precedence 5
            Strict Priority
            Output Queue: Conversation 24
            Bandwidth 45 (kbps) Burst 1125 (Bytes)
            (pkts matched/bytes matched) 0/0
            (total drops/bytes drops) 0/0

        Class-map: class-default (match-any)
          4 packets, 307 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: any


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