AS43582
AS43554
AS42952
CISCO-20120930-232229
CISCO-20120403-030934
AR03336
CISCO-20120209-204802
CISCO-20120209-202457

Common AVC – DNS-AS Use Case Matrix

Everywhere you want to match on Metadata

  • Reporting via FNF even if encrypted
  • Easy QoS
  • Troubleshooting
  • SPAN
  • Martian ACL’s
  • IPSLA
  • Domain Based Routing
  • ZBF (Zone Based Firewalls)
  • NSH (Service Chaining)

DNS-AS metadata as a match variable within C3PL MQC

1. QoS

class-map match-all NETWORK-CONTROL 
 	match protocol attribute traffic-class network-control 
 	match protocol attribute business-relevance business-relevant
	match protocol {metadata}

2. Zone Based Firewalls

class-map type inspect match-all class-in-ssh
	match access-group name ACL-IPv4-ssh-in
	match protocol ssh
	match protocol {metadata}

3. Security ACL’s

ip access-list extended ACL-IPv4-Minecraft-in
	permit tcp any host aaa.bbb.ccc.ddd eq 25565
	permit protocol {metadata}

ip access-list standard ACL-IPv4-NMS
	remark ----- NOC DMZ
	permit aaa.bbb.ccc.ddd
	permit protocol {metadata}

4. Object Groups

object-group service port-proxy-server
	tcp eq 8080
	match protocol {metadata}

5. Domain Based Routing

	track 104 match protocol {metadata}
	ip route 192.168.168.0 255.255.255.0 192.168.252.114 111 track 104

DNS-AS the common policy Intent framework

How to make end2end policy intend a reality

DNS-AS and Easy QoS

How to make the RFC 4594 12-Class QoS Model an easy reality

DNS-AS Shortcuts for Cisco’s (RFC 4594-Based) 12-Class QoS Model

APPLICATION CLASS APPLICATION CLASS long APPLICATION CLASS short BUSINESS-RELEVANCE DSCP COS WMM QUEUING & DROPPING APPLICATION EXAMPLES
(RFC 4594) DNS-AS-RR (LONG) DNS-AS-RR(SHORT) DNS-AS-RR(SHORT)     802.11e    
VoIP Telephony app-class:VOIP-TELEPHONY app-class:VO business:yes EF Priority Queue (PQ) Cisco IP Phones (G.711, G.729)
Broadcast Video app-class:BROADCAST-VIDEO app-class:BV business:yes CS5 (Optional) PQ Cisco IP Video Surveillance / Cisco Enterprise TV
Real-Time Interactive app-class:REALTIME-INTERACTIVE app-class:RTI business:yes CS4 (Optional) PQ Cisco TelePresence
Multimedia Conferencing app-class:MULTIMEDIA-CONFERENCING app-class:MMC business:yes AF4 BW Queue + DSCP WRED Cisco Jabber, Cisco WebEx
Multimedia Streaming app-class:MULTIMEDIA-STREAMING app-class:MMS business:yes AF3 BW Queue + DSCP WRED Cisco Digital Media System (VoDs)
Network Control app-class:NETWORK-CONTROL app-class:NC business:yes CS6 BW Queue EIGRP, OSPF, BGP, ISIS, HSRP, IKE
Signaling app-class:SIGNALING app-class:CS business:yes CS3 BW Queue SCCP, SIP, H.323
Ops / Admin / Mgmt app-class:OPS-ADMIN-MGMT app-class:OAM business:yes CS2 BW Queue SNMP, SSH, Syslog
Transactional Data app-class:TRANSACTIONAL-DATA app-class:TD business:yes AF2 BW Queue + DSCP WRED ERP Apps, CRM Apps, Database Apps
Bulk Data app-class:BULK-DATA app-class:BD business:yes AF1 BW Queue + DSCP WRED E-mail, FTP, Backup Apps, Content Distribution
Best Effort app-class:BEST-EFFORD app-class:BE business:default DF 0 Default Queue + RED Default Class
Scavenger app-class:SCAVENGER app-class:SCV business:no CS1 0 Min BW Queue (Deferential) YouTube, Netflix, iTunes, BitTorrent, Xbox Live

We match on both Application Class DNS-AS-RR, (short) or (long), if you prefer long names.
A comprehensive DNS-AS-RR may look like this:

"CISCO-CLS=app-name:WOLFGANG|app-class:OAM|business:YES"

DNS-AS and Easy QoS

ZERO touch auto-configuration of 1400 App / 12-Class Model Configuration

class-map match-all VOICE
   match protocol attribute traffic-class voip-telephony
   match protocol attribute business-relevance business-relevant
class-map match-all BROADCAST-VIDEO
   match protocol attribute traffic-class broadcast-video
   match protocol attribute business-relevance business-relevant
class-map match-all INTERACTIVE-VIDEO
   match protocol attribute traffic-class real-time-interactive
   match protocol attribute business-relevance business-relevant
class-map match-all MULTIMEDIA-CONFERENCING
   match protocol attribute traffic-class multimedia-conferencing
   match protocol attribute business-relevance business-relevant
class-map match-all MULTIMEDIA-STREAMING
   match protocol attribute traffic-class multimedia-streaming
   match protocol attribute business-relevance business-relevant
 class-map match-all SIGNALING
   match protocol attribute traffic-class signaling
   match protocol attribute business-relevance business-relevant
class-map match-all NETWORK-CONTROL
   match protocol attribute traffic-class network-control
   match protocol attribute business-relevance business-relevant
class-map match-all NETWORK-MANAGEMENT
   match protocol attribute traffic-class ops-admin-mgmt
   match protocol attribute business-relevance business-relevant
class-map match-all TRANSACTIONAL-DATA
   match protocol attribute traffic-class transactional-data
   match protocol attribute business-relevance business-relevant
class-map match-all BULK-DATA
   match protocol attribute traffic-class bulk-data
   match protocol attribute business-relevance business-relevant
class-map match-all SCAVENGER
   match protocol attribute business-relevance business-irrelevant
policy-map MARKING
class VOICE
  set dscp ef
class BROADCAST-VIDEO
  set dscp cs5
class INTERACTIVE-VIDEO
  set dscp cs4
class MULTIMEDIA-CONFERENCING
  set dscp af41
class MULTIMEDIA-STREAMING
  set dscp af31
class SIGNALING
  set dscp cs3
class NETWORK-CONTROL
  set dscp cs6
class NETWORK-MANAGEMENT
  set dscp cs2
class TRANSACTIONAL-DATA
  set dscp af21
class BULK-DATA
  set dscp af11
class SCAVENGER
  set dscp cs1
class class-default
  set dscp default

The simple usage of metadata like on the right (app-class:TD, app-class:Transactional Data), magically allows the application “wolfgang.dns-as.org“ to sneak underneath class-map NETWORK-CONTROL on all DNS-AS client enabled network devices

With ZERO configuration

DNS-AS Metadata:
www.dns-as.org          TXT "CISCO-CLS=app-name:HTTP|app-class:TD”
wolfgang.dns-as.org 	TXT "CISCO-CLS=app-name:WOLFGANG|app-class:NC"