Administrator Guide

Table Of Contents
Sample Scenario for VLT Proxy Gateway
1. The above figure show a sample VLT Proxy gateway scenario. Their are no diagonal links in the square VLT connection
between the C and D in VLT domain 1 and C1 and D1 in the VLT domain 2. This undergo sub-optimal routing with the VLT
Proxy Gateway LLDP method. For VLT Proxy Gateway to work in this scenario you must configure the , VLT-peer-mac
transmit command under VLT Domain Proxy Gateway LLDP mode, in both C and D (VLT domain 1) and C1 and D1 (VLT
domain 2). This behavior is applicable only in the LLDP configuration and not required in the static configuration. Sample
Configuration
Dell(conf-vlt-domain)#proxy-gateway lldp
Dell(conf-vlt-domain-pxy-gw-lldp)#vlt-peer-mac transmit
2. ICL shut Assume ICL between C1 and D1 is shut and if D1 is secondary VLT one half of the inter DC link goes down. After
vm motion, if a packet reaches D2 with the destination MAC address of D1, it may be dropped. This behaviour is applicable
only in the LLDP configuration; in the static configuration, the packet is forwarded.
3. Any L3 packet, when it gets an L3 hit and is routed because of this feature, has a TTL decrement as expected.
4. You can disable the VLT Proxy Gateway for a particular VLAN using an "Exclude-VLAN" configuration. The configuration has
to be done in both the VLT domains [C and D in VLT domain 1 and C1 and D1 in VLT domain 2]. Sample Configuration
LLDP Method
Dell(conf-vlt-domain)#proxy-gateway ll
Dell(conf-vlt-domain-pxy-gw-lldp)#peer-domain-link port-channel 1 exclude-vlan 10
VLT Proxy Gateway
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