In QoS now, there is more than just setting the bandwidth allocated to each class. What you need to do is combine this with the diffserv bit. This is basically the newer version of the TOS bit in the IP header that defines what sort of service happens to the packet. In a nut shell, this means which packets gets sent first in the output queue. As telnet is very delay sensitive, you should give it a higher diffserv bit.
What you basically do is create class maps for each traffic type and apply it to the Ethernet interface so that the router modifies the packets as it enters the router. As the packet leaves the interface, you use normal service policies. Sample config below: class-map match-all Gold match access-group 170 class-map match-all Bronze match access-group 172 class-map match-all Telnet_SSH match access-group 131 class-map match-all Silver match access-group 171 ! policy-map SET_DIFFSERV class Telnet_SSH set ip dscp cs5 policy-map class Gold bandwidth percent (%) class Bronze bandwidth percent (%) ! interface FastEthernet0/0 description Link to LAN ip address x.x.x.x y.y.y.y speed 100 full-duplex service-policy input SET_DIFFSERV ! interface Serial0/0 bandwidth 512 ip address a.a.a.a b.b.b.b service-policy output access-list 131 remark Prioritise Telnet and SSH access-list 131 permit tcp any any eq telnet access-list 131 permit tcp any any eq 22 access-list 170 remark Gold Class QoS access-list 170 permit ip host xxxxxx host xxxxxxx access-list 170 permit ip host xxxxxxx host xxxxxxx access-list 170 permit tcp host xxxxxxxx eq 443 any access-list 170 permit tcp host xxxxxxxx eq www any access-list 170 permit udp any any eq domain access-list 172 remark Bronze Class QoS access-list 172 permit ip host xxxxxxxx host xxxxxxxxx > > -----Original Message----- > From: Julian P [mailto:[EMAIL PROTECTED]] > Sent: 20 January 2003 10:02 > To: [EMAIL PROTECTED] > Subject: QOS on 2621xm [7:61353] > > > Hi > > > We would like to prioritize incoming traffic on our 256k internet link to > uunet .We need to give telnet at least 64k incoming bandwidth. > > Any ideas on the best way to do this ? > > Thanks in advance > > Julian Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=61365&t=61353 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
