Lag Hashing Based On Bidirectional Flow; Cam Profile For The Vlan Acl Group Feature; Troubleshoot Cam Profiling; Cam Profile Mismatches - Dell Force10 S4810P Configuration Manual

High-density, 1ru 48-port 10gbe switch

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When MPLS IP packets are received, FTOS looks up to 5 labels deep for the IP header.

When an IP header is present, hashing is based on IP 3 tuple (source IP address, destination IP address,

and IP protocol).

If an IP header is not found after the 5th label, hashing is based on the MPLS labels.

If the packet has more than 5 MPLS labels, hashing is based on the source and destination MAC

To enable this type of hashing, use the default CAM profile with the microcode lag-hash-mpls.

LAG Hashing based on Bidirectional Flow

To hash LAG packets such that both directions of a bidirectional flow (for example, VoIP or P2P file

sharing) are mapped to the same output link in the LAG bundle, use the default CAM profile with the

microcode lag-hash-align.

IPv4Flow sub-partitions are supported on platform

To optimize for the VLAN ACL Group feature, which permits group VLANs for the IP egress ACL, use

the CAM profile ipv4-egacl-16k with the default microcode.

Note: Do not use this CAM profile for Layer 2 egress ACLs.

The CAM profile on all cards must match the system profile. In most cases, the system corrects

mismatches by copying the correct profile to the card, and rebooting the card. If three resets do not bring

up the card, or if the system is running an FTOS version prior to 6.3.1.1, the system presents an error

message. In this case, manually adjust the CAM configuration on the card to match the system

configuration.

Dell Force10 recommends the following to prevent mismatches:

Use the eg-default CAM profile in a chassis that has only EG Series line cards. If this profile is used in

a chassis with non-EG line cards, the non-EG line cards enter a problem state.

Before moving a card to a new chassis, change the CAM profile on a card to match the new system

After installing a secondary RPM into a chassis, copy the running-configuration to the

startup-configuration.

Content Addressable Memory (CAM)