Gigamon Asymmetrical Hashing in Inline Tool Group

Example 16 is an inline bypass solution on GigaVUE-HC2 for an inline tool group with four tools. The inline tool group uses asymmetrical hashing (unlike Example 5: Inline Tool Group (N+1) Redundancy which uses symmetrical hashing). The hashing is based on the source IP address for side A and the destination IP address for side B.

A rule-based map (vlan 200) is configured from the inline network to the inline tool group. Traffic that matches the map rule and has the same source IP on side A and destination IP on side B will be sent to the same inline tool in the inline tool group.

A shared collector is configured from the inline network to bypass. Traffic that does not match the map rule will be sent to the shared collector and bypassed.

Step

Description

Command

1. Configure inline network aliases, port type (inline-network), and administratively enable inline network ports.

(config) # port 1/2/x1 alias iN1
(config) # port iN1 type inline-network
(config) # port iN1 params admin enable

(config) # port 1/2/x2 alias iN2
(config) # port iN2 type inline-network
(config) # port iN2 params admin enable

2. Configure inline network.

(config) # inline-network alias inNet pair net-a iN1 and net-b iN2

3. Configure inline tool ports, port type (inline-tool), and administratively enable inline tool ports.

(config) # port 1/2/x15 alias iT1
(config) # port iT1 type inline-tool
(config) # port iT1 params admin enable

(config) # port 1/2/x16 alias iT2
(config) # port iT2 type inline-tool
(config) # port iT2 params admin enable

(config) # port 1/2/x19 alias iT3
(config) # port iT3 type inline-tool
(config) # port iT3 params admin enable

(config) # port 1/2/x20 alias iT4
(config) # port iT4 type inline-tool
(config) # port iT4 params admin enable

(config) # port 1/2/x21 alias iT5
(config) # port iT5 type inline-tool
(config) # port iT5 params admin enable

(config) # port 1/2/x22 alias iT6
(config) # port iT6 type inline-tool
(config) # port iT6 params admin enable

(config) # port 1/2/x23 alias iT7
(config) # port iT7 type inline-tool
(config) # port iT7 params admin enable

(config) # port 1/2/x24 alias iT8
(config) # port iT8 type inline-tool
(config) # port iT8 params admin enable

4. Configure inline tools and enable them.

(config) # inline-tool alias inTool1 pair tool-a iT1 and tool-b iT2
(config) # inline-tool alias inTool2 pair tool-a iT3 and tool-b iT4
(config) # inline-tool alias inTool3 pair tool-a iT5 and tool-b iT6
(config) # inline-tool alias inTool4 pair tool-a iT7 and tool-b iT8

(config) # inline-tool alias inTool1 enable
(config) # inline-tool alias inTool2 enable
(config) # inline-tool alias inTool3 enable
(config) # inline-tool alias inTool4 enable

5. Configure inline tool group and parameters. Enable it and then configure failover action.

(config) # inline-tool-group alias inToolGroup
(config inline-tool-group alias inToolGroup) # tool-list inTool1,inTool2,inTool3,inTool4
(config inline-tool-group alias inToolGroup) # hash a-srcip-b-dstip
(config inline-tool-group alias inToolGroup) # minimum-group-healthy-size 4
(config inline-tool-group alias inToolGroup) # enable
(config inline-tool-group alias inToolGroup) # failover-action tool-bypass
(config inline-tool-group alias inToolGroup) # exit
(config) #

6. Configure rule-based map, from inline network to inline tool group.

(config) # map alias inNet-to-ITG
(config map alias inNet-to-ITG) # type inline byRule
(config map alias inNet-to-ITG) # from inNet
(config map alias inNet-to-ITG) # to inToolGroup
(config map alias inNet-to-ITG) # rule add pass vlan 200
(config map alias inNet-to-ITG) # exit
(config) #

7. Add a shared collector for any unmatched data and send it to bypass.

(config) # map-scollector alias inNet-to-bypass
(config map-scollector alias inNet-to-bypass) # from inNet
(config map-scollector alias inNet-to-bypass) # collector bypass
(config map-scollector alias inNet-to-bypass) # exit
(config) #

8. Configure the path of the traffic to inline tool.

(config) # inline-network alias inNet traffic-path to-inline-tool

9. Display the configuration for this example.

(config) # show inline-tool-group
(config) # show map