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1.
2.
Table 26: IPv6 Classification Fields for a 288-bit CAM Entry
576-bit IPv6 Classification Example
In this example, a policy with a combination of IPv6 classifiers is created and attached.
1.
2.
3.
Match all TCP packets from host 1:1:1:1:1:1:1:1 to any DA
host1(config)#ipv6 classifier-list sourceCLACL source-address
1:1:1:1:1:1:1:1/128 tcp
Create an IPv6 policy list.
host1(config)#ipv6 policy-list ipv6Pol
host1(config-policy-list)#classifier-group sourceCLACL
host1(config-policy-list-classifier-group)#forward
host1(config-policy-list-classifier-group)#classifier-group *
host1(config-policy-list-classifier-group)#filter
The policy ipv6Pol is requesting classification on Source Address (all 4 words)
and Protocol. Table 26 on page 173 lists the active classifiers in the policy named
ipv6Pol and the size of each classifier.
Classifiers
Source address (first word)
Source address (second word)
Source Address (third word)
Source Address (fourth word)
Protocol
The sum of all classification fields requested in ipv6Pol is 136, which is greater
than 128-bit CAM entry size limit. Although this configuration fails to attach to
the interface in JUNOSe releases earlier than Release 10.2.0, it is successfully
attached to the interface, beginning with JUNOSe Release 10.2.x, and the next
higher 288-bit CAM entry is allocated for this policy (two 288-bit entries because
of two classifiers being defined in the policy).
Match all TCP packets from host 1:1:1:1:1:1:1:1 to host 100::1 destined to port
80 from source port 10000
host1(config)#ipv6 classifier-list tcpCLACL source-host 1:1:1:1:1:1:1:1
destination-host 100::1 tcp source-port eq 10000 destination-port eq 80
Match all frames with the color red
host1(config)#ipv6 classifier-list colorCLACL color red
Create an IPv6 policy list.
Variable-Sized CAM Classification for IPv6 Policies Examples
Chapter 8: Policy Resources
Size (Bits)
32
32
32
32
8
173
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