Number of I-SIDs Supported for the Number of Configured IS-IS Interfaces and Adjacencies

The number of I-SIDs supported depends on the number of IS-IS interfaces and adjacencies (NNIs) configured.

The following table shows the number of UNI I-SIDs supported per BEB. UNI I-SIDs are used for Layer 2 VSN, Layer 3 VSN, Transparent-UNI, E-Tree, Switched-UNI and S, G for Multicast.

Number of IS-IS interfaces (NNIs)

Product

I-SIDs with vIST configured on the platform

I-SIDs without vIST configured on the platform

4

VSP 4900 Series

4,000

4,000

VSP 7400 Series

4,000

4,000

6

VSP 4900 Series

3,500

4,000

VSP 7400 Series

3,500

4,000

10

VSP 4900 Series

2,900

4,000

VSP 7400 Series

2,900

4,000

20

VSP 4900 Series

2,000

4,000

VSP 7400 Series

2,000

4,000

48

VSP 4900 Series

1,000

2,000

VSP 7400 Series

1,000

2,000

72

VSP 4900 Series

750

1,500

VSP 7400 Series

750

1,500

100

VSP 4900 Series

550

1,100

VSP 7400 Series

550

1,100

128

VSP 4900 Series

450

900

VSP 7400 Series

450

900

250

VSP 4900 Series

240

480

VSP 7400 Series

240

480

Note:

Expect longer boot times with high scaled adjacency environments.