Service Manual
Sample Scenario for VLT Proxy Gateway
1. The above gure 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 congure 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 conguration and not required in the static conguration. Sample Conguration
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 conguration; in the static conguration, 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" conguration. The conguration 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 Conguration 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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