Cisco 861 with VoIP over EZVPN, QoS(limited)

[dbauman_wan]

Greetings,

I have some 861 routers where I want to send VoIP traffic over an EZVPN and keep all other data traffice over the WAN.  The 861 seems to have a very limited set of QoS features.  I can setup class-maps by presedence, vlan or ip rtp, and can't really 'match protocol sip/rtp'.

What is the best way to configure this on the WAN interface that will prioritize all the tunnel and tunne/voip traffic?  Do I have to apply a policy to the virtual-template and the WAN separately?

Thanks,

David

[Lei Tian]

Hi David,

Since the only traffic pass through EZVPN is your voice traffic, you can just match ESP packet and give it priority on your WAN interface.

HTH,

Lei Tian

[dbauman_wan]

Sounds good.  Do you know the best way to match ESP packets on an 861 with limited QoS features?

match options are:

Router(config-cmap)#match ?
  access-group         Access group
  any                  Any packets
  class-map            Class map
  cos                  IEEE 802.1Q/ISL class of service/user priority values
  destination-address  Destination address
  discard-class        Discard behavior identifier
  flow                 Flow based QoS parameters
  fr-de                Match on Frame-relay DE bit
  fr-dlci              Match on fr-dlci
  input-interface      Select an input interface to match
  ip                   IP specific values
  mpls                 Multi Protocol Label Switching specific values
  not                  Negate this match result
  packet               Layer 3 Packet length
  precedence           Match Precedence in IP(v4) and IPv6 packets
  protocol             Protocol
  qos-group            Qos-group
  source-address       Source address
  vlan                 VLANs to match

and

Router(config-cmap)#match protocol ?
  arp            IP ARP
  bridge         Bridging
  cdp            Cisco Discovery Protocol
  compressedtcp  Compressed TCP (VJ)
  ip             IP
  ipv6           IPV6
  pad            PAD links
  pppoe          PPP over Ethernet
  vofr           voice over Frame Relay packets

[Lei Tian]

class-map EZVPN

match access EZVPN

ip access ex EZVPN

per  ESP any any

HTH,

Lei Tian