In some scenarios, like using VPN services or when multiple services are configured on the same port, specifying the port does not provide a sufficient resolution to separate traffic. In Nokia’s implementation of mirroring, multiple source mirroring parameters can be specified to further identify traffic.
Mirroring of packets matching specific filter entries in an IP or MAC filter can be applied to refine what traffic is mirrored to flows of traffic within a service. The IP criteria can be combinations of:
source IP address and mask
destination IP address and mask
IP protocol value
source port value and range (for example, UDP, or TCP port)
destination port value and range (for example, UDP, or TCP port)
DiffServ Code Point (DSCP) value
ICMP code
ICMP type
IP fragments
IP option value and mask
single or multiple IP option fields present
IP option fields present
TCP ACK set/reset
TCP SYN set/reset
SAP ingress/egress labels
The MAC criteria can be combinations of:
IEEE 802.1p value and mask
source MAC address and mask
destination MAC address and mask
Ethernet Type II Ethernet type value
Ethernet 802.2 LLC DSAP value and mask
Ethernet 802.2 LLC SSAP value and mask
IEEE 802.3 LLC SNAP Ethernet frame OUI zero or non-zero value
IEEE 802.3 LLC SNAP Ethernet frame PID value
SAP ingress/egress labels