Configuring Priority Queueing over GRE Tunnels

Unanswered Question
Nov 25th, 2009

Hi Everyone

Can anyone help me in configuring Priority Queueing (QOS) over GRE Tunnels

We have access locations (Site Router 1841) connected to Aggregation Router (Cisco 3845) using RF Radio Link as Primary and Leased Line as Backup

GRE's were created for RF Link (terminated on Access Router - Fast Ethernet Port) inorder to sense that RF Link is down (Using Keepalives) and traffic is routed via backup link (Leased Line)

we are using static Routing

Now we want to implement QOS -- and infact have implemented Priority Queueing for those access sites which are having Leased Line as Primary and ISDN as Backup and while trying to implement the same for those access sites which are having GRE tunnels created , the tunnel interface doesnot support priority-group command

Kindly let me know how to overcame this obstacle

Sohail Sarwar

I have this problem too.
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Jon Marshall Wed, 11/25/2009 - 11:38

sohail_sarwar wrote:

Hi Everyone

Can anyone help me in configuring Priority Queueing (QOS) over GRE Tunnels

We have access locations (Site Router 1841) connected to Aggregation Router (Cisco 3845) using RF Radio Link as Primary and Leased Line as Backup

GRE's were created for RF Link (terminated on Access Router - Fast Ethernet Port) inorder to sense that RF Link is down (Using Keepalives) and traffic is routed via backup link (Leased Line)

we are using static Routing

Now we want to implement QOS -- and infact have implemented Priority Queueing for those access sites which are having Leased Line as Primary and ISDN as Backup and while trying to implement the same for those access sites which are having GRE tunnels created , the tunnel interface doesnot support priority-group command

Kindly let me know how to overcame this obstacle

Sohail Sarwar

Sohail

With logical interfaces such as a GRE tunnel interface you need to use a hierarchical policy, see if this link helps -

GRE QOS

Jon

sohail_sarwar Sat, 12/12/2009 - 06:23

We have implemented Priority Queueing on CE1 time slots

the configuration is as follows

R01#sh int Se1/0:5
Serial1/0:5 is up, line protocol is up
  Hardware is DSX1
  Description: *** 64Kbps to Site XXX ***
  Internet address is 172.16.100.50/30
  MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,
     reliability 255/255, txload 3/255, rxload 1/255
  Encapsulation PPP, LCP Open
  Open: CDPCP, IPCP, loopback not set
  Last input 00:00:25, output 00:00:01, output hang never
  Last clearing of "show interface" counters 03:25:21
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: priority-list 1
  Output queue (queue priority: size/max/drops):
     high: 0/20/1, medium: 0/40/0, normal: 0/60/0, low: 0/80/0

  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 1000 bits/sec, 1 packets/sec
     4928 packets input, 472323 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     4959 packets output, 608985 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
  Timeslot(s) Used:7, Transmitter delay is 0 flags

Access list has been defined as follows


Extended IP access list 102
    permit tcp any any eq telnet (19567 matches)
    permit tcp host 172.31.0.24 any (443058 matches)
    permit tcp host 172.31.0.4 any (212716 matches)
    permit tcp host 172.31.0.69 any (36165 matches)
    permit tcp host 172.31.4.245 any (182643 matches)
    permit tcp host 172.31.4.246 any
    permit tcp host 172.31.4.247 any
    permit tcp host 172.31.4.6 any (10120 matches)
    permit tcp host 172.19.125.37 any (30 matches)
    permit tcp host 172.31.0.240 any (148804 matches)

and when we execute command on Router as Show interface Serail1/0:5 summary

R01#sh int Se1/0:5 summary
*: interface is up
IHQ: pkts in input hold queue     IQD: pkts dropped from input queue
OHQ: pkts in output hold queue    OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)
TRTL: throttle count
  Interface           IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
---------------------------------------------------------------------
* Serial4/0:6              0     0    0     200     3300    0     0    0    0
NOTE:No separate counters are maintained for subinterfaces
     Hence Details of subinterface are not shown

Can anyone help us in understanding what is the meaning of NOte " No separate counters are maintained for subinterfaces
      Hence Details of subinterface are not shown "

Do we require to do some additional configuration for time slots


Regards

Sohail Sarwar

  

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