White Papers
Sample Scenario for VLT Proxy Gateway
Figure 146. VLT Proxy Gateway — Topology 2
1 The above gure (Topology 2) shows a sample VLT Proxy gateway scenario. There 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 undergoes 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.
1048
VLT Proxy Gateway